8:30 a.m. - 10:00 a.m. PST
Tutorial
GNSS (for Time Transfers)
Additional registration required -- Recording available within 24 hours
GNSS (for Time Transfers)
Registration fee:
$400 if registered and paid by January 4
$450 if payment is received after January 4
For many decades, GPS has provided the fundamental synchronizing timing service supporting much of the world’s critical infrastructure. New GNSS services are emerging that will augment and enhance the robustness of the world’s timing services. This tutorial will provide an overview of how GNSS timing services operate and how their underlying timing references support these PTTI services.
Edward Powers works for the Aerospace Corporation as a PNT subject matter expert supporting USSF SSC GPS program and the “new” Space Development Agency's Navigation Cell as PNT technical lead. In 2018, Mr. Powers retired from government service after 31 years working at the United States Naval Observatory as Time Transfer Division Chief, and prior to that the Naval Research Lab.
10:15 a.m. - 11:45 a.m. PST
Tutorial
Introduction to Atomic Clocks
Additional registration required -- Recording available within 24 hours
Introduction to Atomic Clocks
Registration fee:
$400 if registered and paid by January 4
$450 if payment is received after January 4
The tutorial introduces atomic clock technology with a focus on the mature technologies of industrial atomic clocks, which can be designed into deployable systems and applications.
Dr. Robert Lutwak is a Technical Fellow in Microchip’s Frequency and Time Systems business unit, supporting research and development of atomic oscillators and frequency standards.
12:45 p.m. - 2:15 p.m. PST
Tutorial
Optical Clocks
Additional registration required -- Recording available within 24 hours
Optical Clocks
Registration fee:
$400 if registered and paid by January 4
$450 if payment is received after January 4
The fundamental principles that led to the development of modern optical clocks will be presented. Optical clocks based on trapped neutral atoms in optical lattices or single ions in rf traps currently realize the most accurate frequency standards. An overview of these optical clocks and a comparison of their respective performances will be given. Additional topics may include the basic operation of our standard to a discussion of key systematic shifts that must be well-understood and controlled to achieve high accuracy.
Dr. Susannah Dickerson is a staff scientist at Draper where she is involved in the design, fabrication, and testing of compact optical atomic clocks and quantum gravimeters. Prior to joining Draper in 2017, she completed a postdoc at Harvard and her doctorate at Stanford.
2:30 p.m. - 4:00 p.m. PST
Tutorial
Optical Transfers
Additional registration require -- Recording available within 24 hours
Optical Transfers
Registration fee:
$400 if registered and paid by January 4
$450 if payment is received after January 4
Any TF transmission in optical fibers will ultimately be limited by the physics of the fiber and optoelectronics. The tutorial will present the basics, such as attenuation, dispersion, polarization and other sources of perturbations, and how these effects are harnessed to perform ultra-high-performance TF transfer.
Dr. Per Olof Hedekvist has a PhD in Photonics on fiber nonlinearities. He has been with RISE (Swedish NMI) since 2005, working on TF transfer techniques and as teacher in metrology.
4:15 p.m. - 5:45 p.m. PST
Tutorial
Optical Combs
Additional registration required -- Recording available within 24 hours
Optical Combs
Registration fee:
$400 if registered and paid by January 4
$450 if payment is received after January 4
Optical frequency combs are highly versatile tools for precision measurements. Providing phase coherent frequency references across the entire optical spectrum, they offer users a unique combination of broad spectral coverage, high spectral resolution, and a calibrated frequency scale. As a result, they have found numerous applications in frequency metrology and beyond. This tutorial will explain how optical frequency combs work, covering the fundamental principles, some practical details, and modern developments.
Dr. Ryan Gelly is a staff scientist at Draper in the photonics systems group. He is responsible for the design, microfabrication, and characterization of integrated photonic devices. Before coming to Draper, Ryan completed his PhD in physics at Harvard University in 2022.
9:00 a.m. - 12:15 p.m. PDT
Plenary
ITM/PTTI 2023 Plenary Session
Welcome
KEYNOTE: Advanced Air Mobility: Future of Aviation?
This talk will present the potential of Advanced Air Mobility, and the design space and challenges of building a battery electric Urban Air Mobility vehicle. It will also discuss some of the important enabling technologies and gaps including batteries, compute, navigation, communications, AI/ML, and manufacturing.
Dr. Han Park, Deputy CTO and Head of R&D, Supernal
Dr. Han Park is currently the Deputy CTO of Supernal, an Urban Air Mobility division of Hyundai Motor Group. Prior to Supernal, he was a Vice President of Engineering at Samsung Electronics where he led autonomous driving and robotics programs. He received his BS in Mechanical Engineering from the University of California, Berkeley, an MBA from UCLA Anderson School of Management, an SM in Mechanical Engineering from Massachusetts Institute of Technology, and a Ph.D. in Aeronautical Engineering with a Minor in Electrical Engineering from California Institute of Technology.
KEYNOTE: The Future of Industrial Atomic Clocks
Over the past several decades, laboratory atomic clocks have been improving far faster than their industrial counterparts. We discuss the expected improvements in industrial clock products in the near future.
Dr. Elizabeth Donley, Chief of the Time and Frequency Division, NIST
Dr. Elizabeth Donley is Chief of the NIST Time and Frequency Division and has served as Working Group Chair for the revisions of IEEE Standards 1139 and 1193. She is an experimental physicist by training, with research experience in Bose-Einstein condensation, the maintenance and development of NIST’s atomic fountain clocks, NMR gyroscopes, and the development of compact cold-atom clocks and inertial sensors. She has authored or co-authored close to 100 papers in technical journals. She has been serving as Chief of the Time and Frequency Division since November of 2018.
Her service to the time and frequency community includes organizing symposia and training at national and international conferences, serving as VP for Frequency Control for the IEEE UFFC Society, and advising graduate students from the University of Colorado. She has also served as the Working Group Chair for the revision of two IEEE standards on the topic of frequency control. She received her B.Sc. in Physics from the University of Nevada, M.Sc. in Physics from the University of Colorado and a Ph.D. in Natural Sciences from the Swiss Federal Institute of Technology, Zürich.
EXHIBITOR PRESENTATIONS, 11:45 a.m. - 12:15 p.m.
Moderated and Organized by: Francine Vannicola, Naval Research Laboratory
Exhibitors will have 3-minutes each to describe new commercial applications available for viewing in their exhibit booth.
ITM Sessions
On-Demand sessions will remain available for 30 days.
Tuesday Sessions
ITM
Session
A1
Alternatives, Backups, Complements to GNSS
Session Chairs:
|
|
| Dr. Okuary Osechas German Aerospace Centre (DLR) |
Dr. Michael O'Connor Satelles |
| 2. |
Protection Level Formulations for Distance Measuring Equipment (DME) Brandon Weaver, Gianluca Zampieri, Okuary Osechas, German Aerospace Center Peer Reviewed |
| 3. |
LDACS APNT Protocol and Measurement Signal Processing Architecture Gary McGraw, Consultant - Genova Technologies; Gianluca Zampieri, German Aerospace Center (DLR) and RWTH Aachen University; Okuary Osechas, DLR; Michael Meurer, DLR and RWTH Aachen University; Sai Kalyanaraman, Collins Aerospace Peer Reviewed |
| 4. |
The use of the Frequency Difference of Arrival of 1090 MHz ADS-B Signals for Wide Area Multilateration Shang-Ping Weng and Shau-Shiun Jan, Department of Aeronautics and Astronautics, National Cheng Kung University Peer Reviewed |
| 5. |
Timekeeping with a Chip Scale Atomic Clock in GPS Denied Environments Jade Babcock-Chi, Lucca Trapani, University of Colorado at Boulder; Dennis Akos, University of Colorado Boulder, Stanford University Peer Reviewed |
| 6. |
Apparatus, Systems, and Methods for Determining a Geo-Location Qirfiraz Siddiqui, noGPS Technologies Inc. |
| 7. |
Low Earth Orbit Navigation System (LEONS): Scalable GNSS-Independent Time Transfer and Positioning for Space Users Paul Anderson, George Schmitt, Patrick Shannon (TrustPoint, Inc.) Peer Reviewed |
| 8. |
The Need for GBaaS as GPS/GNSS is no Longer a Reliable Source for Critical PNT Infrastructure Nino De Falcis, Oscilloquartz |
| Virtual Presentations | ||
|
Efficient Fingerprint-Map Generating Method for IEEE 802.11 Indoor Positioning Using SRGAN Hwang Jun Gyu, Kyungpook National University; Cui Shuyu, Kyungpook National University; Lee Chang-ho, Mobile Testing & Compliance Certification Lab.; Park Joon Goo, Kyungpook National University Peer Reviewed |
||
|
Fusing Vehicle Trajectories and GNSS Measurements to Improve GNSS Positioning Correction Based on Actor-Critic Learning Haoli Zhao, Zhenni Li, Ci Chen, Guangdong University of Technology; Lujia Wang, Hong Kong University of Science and Technology; Kan Xie, Shengli Xie, Guangdong Key Laboratory of IoT Information Technology Peer Reviewed |
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Positioning Capability Characterization of 5G NR for GNSS Auxiliary Navigation Lili Cao, Yuan Sun, Zhongliang Deng, School of Electronics Engineering, Beijing University of Posts and Telecommunications Peer Reviewed |
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ITM
Session
B1
Extraterrestrial Navigation
Session Chairs:
|
|
| Dr. Edward LeMaster Lockheed Martin |
Dr. Grace Gao Stanford University |
| 1. |
Performance Analysis of Lunar Radio Navigation ODTS System Cosimo Stallo, Carmine Di Lauro, Mattia Carosi, Enrico Edoardo Zini, Daniele Musacchio, Laura De Leo, Daniele Cretoni, Thales Alenia Space Italy TAS-I; Marco Laurenti, Thales Alenia Space France TAS-F; Henno Boomkamp, Telespazio Germany TPZ Peer Reviewed |
| 2. |
Ensemble Kalman Filter for Moon Transfer Orbit GPS Navigation Masaya Murata, Japan Aerospace Exploration Agency Peer Reviewed |
| 3. |
Precise Positioning and Timekeeping in Lunar Orbit via Terrestrial GPS Time-Differenced Carrier-Phase Measurements Keidai Iiyama, Sriramya Bhamidipati and Grace Gao, Stanford University Peer Reviewed |
| 4. |
Lunar Navigation Satellite System Design for In-Space Rescue Applications Benjamin Johnis, Sanjeev Gunawardena, Air Force Institute of Technology; Avinash Agrawal, Draper |
| 6. |
Precise Clock Estimation on Moon Surface Using Lunar Navigation Satellite System Masaya Murata, Kyohei Akiyama, Naoki Satoh, Japan Aerospace Exploration Agency Peer Reviewed |
| 7. |
Exploiting Terrestrial Signals of Opportunity for LEO Smallsat Individual and Swarm Precision Navigation and Timing James Schatzman, Augustus Aerospace Company |
| 8. |
Verification of Space GPS Receiver Navigation Performance Based on Full-Orbit Navigation Solutions of CubeSat Jaeuk Park, Hanjoon Shim, Yonghwan Bae, Changdon Kee, Department of Aerospace Engineering and SNU-IAMD, Seoul National University; Sunkyoung Yu, Samsung Electronics System LSI |
Wednesday Sessions
ITM
Session
A2
GNSS Integrity and Augmentation
Session Chairs:
|
|
| Dr. Santiago Perea European Space Agency |
Elisa Gallon Illinois Institute of Technology |
| 1. |
Experimental Results of Integrity Monitoring for UAV Flights in Urban Environment Leveraging Image Based Masking Heiko Engwerda, Merle Snijders, Juliette Casals Sadlier, Royal Netherlands Aerospace Centre (NLR) Peer Reviewed |
|
| 2. |
Integrity Monitoring for Urban Air Mobility Using Time-Differenced Carrier Phase HoJoon Jeong, Changdon Kee, Department of Aerospace Engineering and SNU-IAMD, Seoul National University; Junesol Song, Division of Mechanical Engineering, The University of Suwon; Jungbeom Kim, Samsung Electronics system LSI |
|
| 3. |
Network-Based Augmentation System (NBAS) Architectures Optimized to Support Urban Air Mobility (UAM) Jiyun Lee, Gihun Nam, Dongchan Min, Andrew Sun, Korea Advanced Institute of Science and Technology (KAIST), and Sam Pullen, Stanford University Peer Reviewed |
|
| 4. |
On the Performance of a Cascade of Barriers of Multipath Feared Events for High Accuracy High Integrity Train Positioning Michele Brizzi, Roma Tre University; Sandro Chiocchio, Arianna Persia, Radiolabs; Alessandro Neri, Roma Tre University & Radiolabs Peer Reviewed |
|
| 5. |
Analysis of Contributions to the ARAIM Continuity Budget Joseph E. Dennis, Peter Gardner, Tetra Tech Peer Reviewed |
|
| 6. |
Satellite Clock and Ephemeris Error Bounding Characterization for Galileo and Estimated CNAV Xinwei Liu, Rebecca Wang, Juan Blanch, Todd Walter, Stanford University Peer Reviewed |
|
| 7. |
Solution Separation-Based Integrity Monitoring for Integer Ambiguity Resolution-Enabled GNSS Positioning Shizhuang Wang, Xingqun Zhan, Yawei Zhai, and Zhen Gao, School of Aeronautics and Astronautics, Shanghai Jiao Tong University Peer Reviewed |
|
| 8. |
AI-based GNSS Spoofing Attack Detection for Autonomous Vehicles using Satellite Characteristics Data Sagar Dasgupta, Mizanur Rahman, Thejesh N. Bandi, University of Alabama |
|
| Alternate | ||
| 1. |
Carrier Phase Residual Modeling and Fault Monitoring using Short-Baseline Double Difference and Machine Learning Yebin Lee, Dong-Kyeong Lee, Byungwoon Park, Sejong University |
|
| Virtual Presentations | ||
|
A Novel Integrity Monitoring Algorithm for FGO-Based GNSS Positioning System Fankun Meng, Yuan Sun, Zhongliang Deng, School of Electronics Engineering, Beijing University of Posts and Telecommunications Peer Reviewed |
||
|
Integrity Monitoring for Extreme Indoor Environment Positioning Based on Ultrawideband Jianing Li, Yuan Sun, Zhongliang Deng, School of Electronics Engineering, Beijing University of Posts and Telecommunications Peer Reviewed |
||
|
Integrity Monitoring for Real-time Orbit Corrections based on Prior Statistic Parameters Jie Zhang, Fuxin Yang, Liang Li, Guoze Dong, Lin Zhao, College of Intelligent Systems Science and Engineering, Harbin Engineering University Peer Reviewed |
||
|
Integrity Monitoring of Cycle Slip Detection in Observation Domain for Carrier Phase-Based Differenced Positioning Zhao Lin, Li Yang, Jia Chun, Li Liang, Yang Shufan, Jiang Jiachang, College of Intelligent Systems Science and Engineering, Harbin Engineering University Peer Reviewed |
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|
Measurements-Assisted ARAIM Based on Sparse Estimation of Pseudorange Deviations Hangtian Qi, Xiaowei Cui, Mingquan Lu, Tsinghua University Peer Reviewed |
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ITM
Session
B2
Remote Sensing, Atmospheric Effects, and Space Weather
Session Chairs:
|
|
| Dr. Brian Breitsch University of Colorado, Boulder |
Dr. Anthea Coster MIT Haystack Observatory |
| 1. |
Evaluation of Tropospheric and Mixed Single - Dual Frequency Error Models in Advanced RAIM Juan Blanch, Todd Walter, Frank Lai, Stanford University Peer Reviewed |
| 2. |
Troposphere Delay Model Error Analysis With Application to Vertical Protection Level Calculation Yu-Fang Lai, Juan Blanch, Todd Walter, Stanford University Peer Reviewed |
| 3. |
Real-time Capable Tropospheric Modeling for SBAS-PPP Shrivathsan Narayanan, Okuary Osechas, Mohammed Mainul Hoque, German Aerospace Center (DLR), Germany; Authie Thierry, Thales Alenia Space; Carlos Lopez, European Space Agency (ESA) Peer Reviewed |
| 4. |
Availability Assessment of Dual-Frequency GNSS-Based Augmentation Systems Under Equatorial Ionospheric Scintillations K. Andrew Sun, Jaehee Chang, Jiyun Lee, Korea Advanced Institute of Science and Technology (KAIST); Brian Breitsch, Y. Jade Morton, University of Colorado Boulder Peer Reviewed |
| 5. |
Machine Learning-Based Ionospheric Modelling Performance During High Ionospheric Activity Shishir Priyadarshi, Wahyudin Syam, Andrés Abelardo García Roqué, Alejandro Pérez Conesa, GMV; Guillaume Buscarlet, Raül Orús Pérez, Mickael Dall’ Orso, European Space Agency (ESA) Peer Reviewed |
| 6. |
Results of One-Year Observation of a Jamming Interferer Degrading Amplitude Scintillation Indices in GISTM Receiver Alex Minetto, Department of Electronics and Telecommunications, Politecnico di Torino; Emanuele Pica, Claudio Cesaroni, Istituto Nazionale di Geofisica e vulcanologia (INGV); Fabio Dovis, Department of Electronics and Telecommunications, Politecnico di Torino Peer Reviewed |
| 7. |
Initial Carrier Phase Processing for the Haleakala Mountaintop GNSS-R Experiment Brian Breitsch and Jade Morton, University of Colorado, Boulder Peer Reviewed |
| 8. |
Impacts of High Rate GNSS Satellite Clock Estimation on Radio Occultation Bending Angle Retrievals: Preliminary Report Jian Yao, Jan-Peter Weiss, Teresa VanHove, University Corporation for Atmospheric Research (UCAR) |
ITM
Session
A3
GNSS and Security: Interference, Jamming, and Spoofing
Session Chairs:
|
|
| Dr. Andriy Konovaltsev German Aerospace Center (DLR) |
Mathew Cosgrove Northrop Grumman |
| 1. |
Effects of Interference from Non-Standard C/A Waveforms John W. Betz, Christopher J. Hegarty, Jeffry T. Ross, Gary M. Okerson, The MITRE Corporation |
|
| 2. |
Addressing a Critical Vulnerability in Upcoming Broadcast-Only TESLA-Based GNSS-Enabled Systems Jason Anderson, Sherman Lo, Todd Walter, Stanford University Peer Reviewed |
|
| 3. |
Live-Sky GNSS Signal Processing Using a Dual-Polarized Antenna Array for Multipath Mitigation Eric Hahn, Sanjeev Gunawardena, Air Force Institute of Technology; Chris Bartone, Ohio University Peer Reviewed |
|
| 4. |
Comparison of CRPA Direction of Arrival Methods on Post Correlated GNSS Signals for Solution Authentication and Spoofing Detection C. Anderson Givhan, Scott M. Martin, Auburn University Peer Reviewed |
|
| 5. |
Analysis of GNSS disruptions in European Airspace Michael Felux, Benoit Figuet, Manuel Waltert, Patric Fol, Zurich University of Applied Sciences; Martin Strohmeier, Armasuisse; Xavier Olive, ONERA – DTIS, Université de Toulouse Peer Reviewed |
|
| 6. |
Investigation of GPS Interference Events with Refinement on the Localization Algorithm Zixi Liu, Juan Blanch, Sherman Lo, Todd Walter, Stanford University Peer Reviewed |
|
| 7. |
A Graphical Way of Continuous GNSS Spoofing Detection at the Baseband Signal Level Jingxiaotao Fang, Department of Aeronautical and Aviation Engineering, The Hong Kong Polytechnic University, Hong Kong SAR; Jiang Yue, College of Science, Hohai University; Bing Xu, Department of Aeronautical and Aviation Engineering, The Hong Kong Polytechnic University, Hong Kong SAR Peer Reviewed |
|
| 8. |
GPU Computing of GNSS Chipshape Tyler Bransfield, Sanjeev Gunawardena, Air Force Institute of Technology Peer Reviewed |
|
| Alternate | ||
| 1. |
GNSS Spoofing Detection for High Integrity and Continuity Applications Cagatay Tanil, Amazon Prime Air |
|
| Virtual Presentations | ||
|
A GNSS Spoofing Detection Method Based on Raw GNSS/IMU/Camera Measurements Xiao Zhou, Hong Li, Mingquan Lu, Department of Electronic Engineering, Beijing National Research Center for Information Science and Technology, Tsinghua University |
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|
Evaluation of the Effects of the DME Beacons on BDS B2a Signals in China Hotspots Yiming Wang, School of Electronic Information Engineering, Beihang University; Qiongqiong Jia, Civil Aviation University of China; Kai Guo, Zhipeng Wang, Yanbo Zhu, School of Electronic Information Engineering, Beihang University Peer Reviewed |
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|
Rotating Dual Antennas Based Detection Method For Distributed GNSS Spoofing Attacks Hao Wang, Hong Li, Mingquan Lu, Department of Electronic Engineering, Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University Peer Reviewed |
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ITM
Session
B3
Autonomous Navigation Applications
Session Chairs:
|
|
| Dr. Nikolay Mikhaylov Robert Bosch Corp. |
Laura Norman Hexagon |
| 1. |
Localization & Mapping Requirements for Level 2+ Autonomous Vehicles Tyler G.R. Reid, Andrew Neish, Brian Manning, Xona Space Systems Peer Reviewed |
| 2. |
Non-Line-of-Sight GNSS Ray Tracing and Rectification in Urban Canyons by LiDAR-Based Surface Reconstruction Roland Pugliese, Di Hai, and Dirk Abel, RWTH Aachen University Peer Reviewed |
| 3. |
Adaptive Robust-Statistics GNSS Navigation Based on Environmental Context Detection Yi Ding, Airbus SAS and ISAE-SUPAERO, University of Toulouse; Florent Feriol, ISAE-SUPAERO, University of Toulouse; Yoko Watanabe, ONERA (DTIS); Philippe Asseman, Airbus SAS; Gaël Pages, ISAE-SUPAERO, University of Toulouse; Damien Vivet, ISAE-SUPAERO, University of Toulouse Peer Reviewed |
| Virtual Presentations | ||
|
Integration of Vehicle Dynamic Model and System Identified Model for Navigation in Autonomous Mobile Robots Penggao Yan, Li-Ta Hsu, and Weisong Wen, Department of Aeronautical and Aviation Engineering, The Hong Kong Polytechnic University Peer Reviewed |
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|
Semi-Supervised Learning Technique For Multipath-Classification in NavIC System Ashish K Shukla, Space and Applications Centre, Ahmedabad, India Utsav Mehta, Pandit Deendayal Energy University Peer Reviewed |
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Thursday Sessions
ITM
Session
A4
Sensor-Fusion for GNSS-Challenged Navigation
Session Chairs:
|
|
| Ryan Dixon Hexagon |
Dr. Naser El-Sheimy University of Calgary |
| 1. |
Adaptive Fusion of Navigation Solutions from Measurement Subsets Chun Yang and Andrey Soloviev, QuNav Peer Reviewed |
| 2. |
Interacting Multiple Model Particle Filter for Indoor Positioning Applications Toni Fetzer, Markus Bullmann, Markus Ebner, Steffen Kastner, and Frank Deinzer, Faculty of Computer Science and Business Information Systems, University of Applied Sciences Würzburg-Schweinfurt; Marcin Grzegorzek. Institute of Medical Informatics, University of Lübeck Peer Reviewed |
| 3. |
Performance Analysis of Deep Learning Supported Kalman Filter Shuo Li, Nikolay Mikhaylov, Robert Bosch GmbH; Thomas Pany, Bundeswehr University Munich Peer Reviewed |
| 4. |
Intersection of Error Ellipsoids from at Least Two Positioning Sensors for Improved Sensor Fusion Patrick Henkel, Medeea Horvat and Luka Sachße, ANavS GmbH Peer Reviewed |
| 5. |
A Study on Improving Smartphone Precise Positioning Performance Through Antenna Calibration According to Smartphone Attitude Jong-Heon Kim, Bogeun Cho, Bu-Gyeom Kim, Changdon Kee, Sunkyoung Yu, JungBeom Kim, Department of Aerospace Engineering, and the Institute of Advanced Machines and Design, Seoul National University - Samsung Electronics System LSI |
| 6. |
A Novel GNSS Positioning Method for Urban Canyons in Measurement Domain Huan Luo, Wu Chen, Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University Peer Reviewed |
| 7. |
Rail Digital Map Construction on GNSS Denied Areas Michele Brizzi, Roma Tre University; Francesca D'Orazio, Radiolabs; Alessandro Neri, Roma Tre University & Radiolabs |
| 8. |
Evaluating Navigation Augmentation with LTE in the Urban Signal Environment Andrew Brevick, Kirsten Strandjord, University of Minnesota - Twin Cities; Pai Wang, Shanghai Jiao Tong University |
| Virtual Presentations | ||
|
Data-Driven Inertial Navigation assisted by 5G UL-TDoA Positioning Hossein Shoushtari, HafenCity University, Geodesy and Geoinformatics; Dorian Harder, HafenCity University, Geodesy and Geoinformatics; Maximilian Kasparek, Fraunhofer IIS; Matthias Schäfer Fraunhofer IIS; Jörg Müller-Lietzkow, HafenCity University, Economy and Digitization; Harald Sternberg, HafenCity University, Geodesy and Geoinformatics. Peer Reviewed |
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L2VCali: A Dataset for LiDAR and Vision-Based Sensor Calibration in Structural Indoor Environments Mengchi Ai, Ilyar Asl Sabbaghian Hokm Abadi, Naser El-Sheimy, Mobile Multi-Sensor Systems Research Group Department of Geomatics Engineering, The University of Calgary Peer Reviewed |
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Ocean Real-Time PPP/INS Tight Coupled Integration Method with the BeiDou ShortMessage Communication Xiaosong Liu, Lin Zhao, Fuxin Yang, Jie Zhang, Luehan Gao, College of Intelligent Systems Science and Engineering, Harbin Engineering University Peer Reviewed |
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ITM
Session
B4
Receiver Design, Signal Processing, and Antennas
Session Chairs:
|
|
| Dr. Sanjeev Gunawardena Air Force Institute of Technology |
Dr. Yu-Hsuan Chen Stanford University |
| 1. |
A 3-Features Assessment of the On-Orbit Performance of GNSS Satellite Antennas: The Case of GLONASS R719 and R720 Gerardo Allende-Alba, Peter Steigenberger, Institute of Communications and Navigation, German Aerospace Center (DLR); Steffen Thoelert, DLR - RWTH Aachen University Peer Reviewed |
| 2. |
In-Situ Calibration of GPS Antenna Array with Ambient Signals Chun Yang and Andrey Soloviev, QuNav Peer Reviewed |
| 3. |
Accelerating a Software Defined Satnav Receiver using Multiple Parallel Processing Schemes Logan Reich, Sanjeev Gunawardena, Air Force Institute of Technology; Michael Braasch, Ohio University Peer Reviewed |
| 4. |
Examining Cross Frequency Interference Effects in Multi-Frequency GNSS Receivers Sherman Lo, Yu Hsuan Chen, Nicolas San Miguel, Todd Walter, Stanford University; Dennis Akos, University of Colorado Boulder Peer Reviewed |
| 5. |
Characterizing GNSS Multipath in Challenging Installation Scenario Using Combined Simulation -Measurements of Dual-Polarization Antennas Ernest Ofosu Addo, Stefano Caizzone Institute of Communications and Navigation, German Aerospace Center (DLR) |
| 6. |
Multipath Parameters Estimation in Physically Based Synthetic Environment Using Robust Deep Neural Regression Thomas Gonzalez, Oktal-Synthetic Environment and ENAC Université de Toulouse; Antoine Blais, ENAC Université de Toulouse; Nicolas Couellan, ENAC Université de Toulouse and Institut Mathématiques de Toulouse; Christian Ruiz, Oktal-Synthetic Environment |
| 7. |
Comparison of a Neural Network and Viterbi Decoder on Forward Error Corrected CNAV Messages Stefan Orosco, Yu-Hsuan Chen, Todd Walter, Sherman Lo, Stanford University Peer Reviewed |
| 8. |
Receiver-Specific GNSS Inter-System Bias in Low Earth Orbit Sabrina Ugazio, Zachary Arnett, Ryan McKnight, and Brian C. Peters, Ohio University |
| Virtual Presentations | ||
|
Fuzzy C-Mean Clustering Based NLOS Signal Identification Method and Localization Model in Urban Canyon Environment Yilang Zhang, Yuan Sun, Zhongliang Deng, School of Electronics Engineering, Beijing University of Posts and Telecommunications Peer Reviewed |
||
|
NLOS/LOS Classification by Constructing Indirect Environment Interaction from GNSS Receiver Measurements Using a Transformer-Based Deep Learning Model Zhenni Li, Guangdong University of Technology; Kungan Zeng, Sun Yat-sen University; Lujia Wang, Hong Kong University of Science and Technology; Xie Kan, Rong Yuan, Shengli Xie, Guangdong University of Technology Peer Reviewed |
||
|
Precise Real-Time Doppler Positioning Using a Stand-Alone GNSS Receiver Ziheng Zhou, Hong Li, Mingquan Lu, Department of Electronic Engineering, Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University |
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|
Rao-Blackwellized Particle Filter for Scintillation Detection and Position/Bias Estimation of Low-Latitude GNSS Receivers Paulo R. P. Silva, Marcelo G. S. Bruno, Instituto Tecnológico de Aeronáutica, and Alison O. Moraes, Instituto de Aeronáutica e Espaço Peer Reviewed |
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ITM
Session
A5a
Radionavigation Beyond Medium Earth Orbit GNSS
Session Chairs:
|
|
| Dr. Kazuma Gunning Xona Space Systems |
Dr. Chun Yang QuNav |
| 1. |
A Map-Matching Based Positioning Method Using Doppler Tracking and Estimation by a Software-Defined Receiver for Multi-Constellation LEO Satellites Hirotaka Kanamori, Kaito Kobayashi, and Nobuaki Kubo, Tokyo University of Marine Science and Technology, Japan Peer Reviewed |
| 2. |
GNSS Constellation Performance Using ARAIM with Inclined Geosynchronous Satellite and Low-Earth-Orbit Satellite Augmentation Sam Pullen, Sherman Lo, Isaiah Colobong, Sukrut Oak, Juan Blanch, Todd Walter Stanford University; Mark Crews, Robert Jackson, Stephen Young, Kevin Huttenhoff Peer Reviewed |
| 3. |
Direct Positioning Estimation Beyond the Constellation Using Falcon Gold Data Collected on Highly Elliptical Orbit Kirsten Strandjord, Faith Cornish, Department of Aerospace Engineering and Mechanics, University of Minnesota Twin Cities |
| 4. |
Performance Analysis of a Cellular LTE and GPS L1 C/A Vector Tracking Receiver, a Simulation Study Samuel Morgan and Scott Martin, Auburn University |
| Virtual Presentations | ||
|
GNSS Spoofing Identification with Assistance of LEO Satellite Signal Yiwei Wang, Yanhong Kou, Zhigang Huang, School of Electronics and Information Engineering Peer Reviewed |
||
|
On the Very Short and Very Long LEO Satellite Orbit Prediction Kan Wang, National Time Service Center (NTSC), Chinese Academy of Sciences (CAS) & University of Chinese Academy of Sciences; Ahmed El-Mowafy, School of Earth and Planetary Sciences, Curtin University; Hang Su, NTSC; Xuhai Yang, NTSC, CAS & University of Chinese Academy of Sciences Peer Reviewed |
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ITM
Session
A5b
Collaborative Navigation
Session Chairs:
|
|
| Dr. Adam Rutkowski Air Force Research Laboratory |
Dr. Kirsten Strandjord University of Minnesota |
| 1. |
Performance Evaluation and Hybrid Application of the Greedy and Predictive UAV Trajectory Optimization Methods for Localizing a Target Mobile Device Halim Lee and Jiwon Seo, Yonsei University Peer Reviewed |
| 2. |
Environment Context Detection of Wearable GNSS Using Machine Learning Algorithm Youmin Joung, Sunkyoung Yu, Junbeom Kim, Soyoung Park, Kisoo Yu, Samsung Electronics Peer Reviewed |
| 3. |
A Distributed, Collaborative Strategy for In-Situ Monitoring of Multipath Errors Okuary Osechas, Shrivathsan Narayanan, Gianluca Zampieri, Brandon Weaver, German Aerospace Center - DLR |
| 4. |
TerraPoiNT: A Terrestrial Navigation System Sameet Deshpande, Arun Raghupathy, NextNav Inc |
| Virtual Presentations | ||
|
A Node Selection Method for Multi-vehicle Cooperative Positioning Base on CRLB Hanbiao Gong, Hongbo Zhao, Shan Hu, Chen Zhuang, Beihang University Peer Reviewed |
||
ITM
Session
B5a
Safety-critical Applications of GNSS and Other Sensors
Session Chairs:
|
|
| Dr. Charles Toth The Ohio State University |
Dr. Madeleine Naudeau Air Force Research Laboratory |
| 1. |
Experimentation on ARAIM Evolutions for Non-Aviation Applications Javier Fidalgo, Enrique Domínguez, Ginés Moreno, Fulgencio Buendía, Joao Pedro Duque, GMV; Merle Snijders, Heiko Engwerda, Netherlands Aerospace Centre; Ettore Canestri, Daniel Lopour, Marco Porretta, Natalia Castrillo, EU Agency for the Space Programme; Santiago Perea, European Space Agency; Ilaria Martini, Matteo Sgammini, Juan Pablo Boyero, European Commission Peer Reviewed |
|
| 2. |
Assessment of Differential Doppler Navigation with Starlink LEO Satellite Signals of Opportunity Samer Hayek, Joe Saroufim, Mohammad Neinavaie, Sharbel Kozhaya, and Zaher M. Kassas, The Ohio State University |
|
| 3. |
A RFI Testbed for Examining GNSS Integrity in the Various Environments Yu-Hsuan Chen, Zixi Liu, Juan Blanch, Sherman Lo, Todd Walter, Stanford University Peer Reviewed |
|
| 4. |
Characterizing Perspective Error in Voxel-Based LIDAR Scan Matching Jason H. Rife and Matthew McDermott, Tufts University Peer Reviewed |
|
| Alternate | ||
| 2. |
Extended Kalman Filter-Based Integrity Monitoring with 3D Map-aided Outlier Rejection for GNSS/SOP/INS Integrated Navigation Mu Jia and Zak (Zaher) Kassas, The Ohio State University |
|
| Virtual Presentations | ||
|
GNSS Signal Authentication using QZSS Signal and Evaluation of Key Performance Indicators Dinesh Manandhar, Ryosuke Shibasaki, Center for Spatial Information Science, The University of Tokyo |
||
ITM
Session
B5b
Precise GNSS Positioning
Session Chairs:
|
|
| Dr. Daniel Medina German Aerospace Center (DLR) |
Dr. Patrick Henkel Technical University Munich |
| 1. |
RTK Availability Prediction Using a 3D City Model and Machine Learning Kaito Kobayashi and Nobuaki Kubo, Tokyo University of Marine Science and Technology Peer Reviewed |
| 2. |
Precision-Aided Partial Ambiguity Resolution Scheme for GNSS Attitude Determination J. Manuel Castro-Arvizu, Trimble Terrasat; Daniel Medina, Institute of Communications and Navigation, German Aerospace Center (DLR); Jordi Vilà-Valls, Institut Supérieur de l’Aéronautique et de l’Espace (ISAE-SUPAERO), University of Toulouse Peer Reviewed |
| 3. |
Characterization and Comparison of Galileo and GPS Anomalies Rebecca Wang, Todd Walter, Stanford University Peer Reviewed |
| 4. |
Analysis of RTK Positioning Accuracy Using Antenna Calibrated Commercial Samsung Smartphone Bu-Gyeom Kim, Jong-Heon Kim, Changdon Kee, Department of Aerospace Engineering and SNU-IAMD, Seoul National University; Sunkyoung Yu, Jungbeom Kim, Samsung Electronics System LSI |
| Virtual Presentations | ||
|
A Multi-GNSS PPP Partial Ambiguity Resolution Method Based on Observations Weight Ranking Zhiguo Sun, Lin Zhao, Fuxin Yang, Jie Zhang, Ruizhe Zhang, College of Intelligent Systems Science and Engineering, Harbin Engineering University Peer Reviewed |
||
|
Real-time Kinematic Positioning Algorithm in Graphical State Space Sudan Yan, Shaolin Lü, GraphOptimization Inc.; Gang Liu, Yiding Zhan, Department of Electronic Engineering, Tsinghua University; Jianan Lou, Rong Zhang, Department of Precision Instrument, Tsinghua University |
||
PTTI Sessions
On-Demand sessions will remain available for 30 days.
Tuesday Sessions
PTTI
Session
P1a
Advanced and Future Clocks
Session Chairs:
|
|
| Dr. Roberto Diener ONR |
Dr. Franklin Ascarrunz Spectradynamics |
| 1. |
A Strontium Optical Clock Infrastructure Based on Metasurface Optics and Integrated Photonics Andrew R. Ferdinand, Sindhu Jammi, Zheng Luo, University of Colorado Boulder, Time and Frequency Division NIST; Zach L. Newman, University of Colorado Boulder, Time and Frequency Division NIST, Octave Photonics; Wenqi Zhu, Microsystems and Nanotechnology Division NIST; David R. Carlson, Time and Frequency Division NIST, Octave Photonics; Will Lunden, Dan Sheredy, Parth Patel, Vector Atomic Inc; Grisha Spektor, University of Colorado Boulder, Time and Frequency Division NIST; Martin M. Boyd, Vector Atomic Inc.; Amit Agrawal, Microsystems and Nanotechnology Division NIST; Scott B. Papp, University of Colorado Boulder, Time and Frequency Division NIST |
| 2. |
Progress on a Tactical Ytterbium Microwave Ion Clock Xianli Zhang, Jay Noble, Jonathan Tallant, Hyunwook Park, Michelle Nguyen, Jackie Ellett, Dan Boschen, Mike Silveira, Cody Dutra, Luan Vo, Anders Herrmann, Kevin Wellwood, Armando Martins, and K. Richard Overstreet, Microchip Technology |
| 3. |
Compact Frequency Combs for Deployable Optical Atomic Clocks Henry Timmers, Bennett Sodergren, Andrew Attar, Star Fassler, Cole Smith, Jason Pinon, Kurt Vogel, and Kevin Knabe, Vescent Photonics |
| 4. |
Industrial Optically-Pumped Cesium Beam Clock Patrick Berthoud, Manual Haldimann, Fabiano Kroll, Vladimir Dolgovskiy, Oscilloquartz SA |
PTTI
Session
P1b
Low-SWaP Clocks and Oscillators for 5G and Beyond
Session Chairs:
|
|
| Dr. Jonathan Hoffman DARPA |
Dr. Jenna Chan Army Research Laboratory |
| 1. |
Empirical Measurements of Teledyne CSAC TempCo and Drift Performance Nicholas Kotsianas, Katherine Tyler, Robert Borwick III, Teledyne Scientific |
| 2. |
Tantala Nonlinear Integrated Photonics for Portable Optical Clocks Travis C. Briles, Time and Frequency Division, National Institute of Standards and Technology; David R. Carlson, Octave Photonics, Louisville; Jennifer Black, Time and Frequency Division, National Institute of Standards and Technology; Jizhao Zang, Grisha Spektor, Yan Jin, Scott Papp, Time and Frequency Division, National Institute of Standards and Technology & University of Colorado |
| 3. |
High-efficiency Optical Frequency Comb Generation in Microresonators Jizhao Zang, Su-peng Yu, Time and Frequency Division, National Institute of Standards and Technology, University of Colorado; David R. Carlson, Travis C. Briles, Time and Frequency Division, National Institute of Standards and Technology; Yan Jin, Haixin Liu, and Scott B. Papp, Time and Frequency Division, National Institute of Standards and Technology, University of Colorado |
| 4. |
Developing Low SWaP-C Chip-scale Optical Clock Weimin Zhou, James Cahill, Jimmy Ni, Andrew DeLoach, Tanvir Mahmood, Sang-Yeon Cho, Jason Sun, and Stephen Anderson, US Army CCDC-ARL; Logan Courtright, Curtis Menyuk, University of Maryland Baltimore County; John Bowers, University of California at Santa Barbara; Lue Wu, and Kerry Vahala, California Institute of Technology |
Wednesday Sessions
PTTI
Session
P2a
Present and Future Clocks for Space and Ground Stations
Session Chairs:
|
|
| Dr. James Camparo The Aerospace Corporation |
Dr. Thejesh N. Bandi The University of Alabama |
| 1. |
Development and Performance of a Digital Rubidium Atomic Frequency Standard (DRAFS) as a Next-Generation Space Clock Christopher Varuolo, Igor Shtaerman, Daniel J. Clark, Jason Napodano, Paul Skibiel, Nicholas Aji, Thomas McClelland - Frequency Electronics, Inc. |
| 2. |
Demonstration of Micro Mercury Trapped Ion Clock Prototypes Thai M. Hoang, Sang K. Chung, Thanh Le, John D. Prestage and Nan Yu, Jet Propulsion Laboratory, California Institute of Technology, |
| 3. |
Rack-Mounted Cold Atom Microwave Atomic Clock with Paths to Commercialization for GPS-Denied Environments Andrew Kortyna, Judith Olson, Gabriel Ycas, Jim Duncan, Evan Salim, Hugo Leon, ColdQuanta |
| 4. |
Deployable Optical Atomic Clocks Jonathan D. Roslund, Arman Cingoz, Abijith S. Kowligy, William D. Lunden, Guthrie B. Partridge, Franklin R. Roller, Dan Sheredy, Gunnar Skulason, Joe Song, Jamil R. Abo-Shaeer, Martin M. Boyd, Vector Atomic, Inc. |
PTTI
Session
P2b
Role of Clocks and Timing and How they Operate in Present and Future GNSS Architectures
Session Chairs:
|
|
| Dr. John Janis L3-Harris |
Dr. John Elgin Air Force Research Laboratory |
| 1. |
IEEE P1952 – Resilient Positioning, Navigation, and Timing User Equipment Working Group Doug Arnold, Meinberg USA; Shelby Savage, The MITRE Corporation; Steve Guendert, IBM Corporation |
| 2. |
Preventing Time from Becoming Obsolete: Supporting the 5071A Cesium Primary Frequency Reference into the Next Decade David Chandler, Christopher Leissner, Peter Cash, Microchip |
| 3. |
Developing a GNSS Space-Clock: Recent Experiences of a Space-Clock Designer Thejesh N. Bandi, Department of Physics & Astronomy, College of Arts & Sciences, The University of Alabama |
| 4. |
Advanced Atomic Clock Research at The Aerospace Corporation Zachary Warren, James Camparo, The Aerospace Corporation |
PTTI
Session
P3a
Time Transfer and PNT from Proliferated LEO Constellations
Session Chairs:
|
|
| Greg Weaver JHU-APL/SDA |
Chris Erickson Space Force |
| 1. |
Precision Timing with LEO Satellite Time and Location Signals Austin M. Smith and David M. Bevly, Auburn University |
|
| 2. |
Measuring the Timing Accuracy of Satellite Time and Location (STL) Receivers Peter B. Johnson, Satelles; Andrew N. Novick, Michael A. Lombardi, National Institute of Standard and Technology (NIST) |
|
| 3. |
Integrated Optical Transceivers for Frequency Comb-Based Time Transfer over Free Space A. Cingoz, A. Kowligy, J. Roslund, J. Abo-Shaeer, M. Boyd, W. Lunden, F. Roller, Vector Atomic; E. Caldwell, N. Newbury, L. Sinclair, B. Stuhl, W. Swann, National Institute of Standards and Technology; Jean-Daniel Deschenes, Octosig Consulting |
|
| 4. |
Two-Way Time Transfer Over a 10 Gbit/s Optical Link for Synchronization and Distributed Sensing Applications Justin Zobel, Raef Youssef, Stephen Rintoul, Jane Gilligan, Michael Brown, Lindsey Marinello, Elad Siman-Tov, Sean O’Connor, Krunal Patel, Michelle O’Toole, Eric Adles, The Johns Hopkins University Applied Physics Laboratory |
|
| Alternate | ||
| 1. |
A Multi-Platform Clock Ensemble Testbed Christopher Flood, Justin Pedersen, Penina Axelrad, University of Colorado Boulder |
|
PTTI
Session
P3b
Time Transfer Over Comms and Unconventional Methods
Session Chairs:
|
|
| Dr. Per Olof Hedekvist RISE Research Institutes of Sweden |
| 1. |
Optical Time & Frequency Activities in the GÉANT Project (Past & Future) Josef Vojtech, Vladimir Smotlacha, CESNET; Susanne Naegele-Jackson, Friedrich-Alexander Universität Erlangen- Nürnberg; Nicolas Quintin, RENATER; Krzysztof Turza, Wojbor Bogacki, Poznan Supercomputing and Networking Center; Guy Roberts, GÉANT; Fabian Mauchle, Joel Busch, SWITCH |
| 2. |
Entirely Terrestrial Time Distribution From Standards Institutes To Industry Richard Hoptroff, Hoptroff London |
| 3. |
CLONETS-DS – Clock Network Services-Design Study Strategy and Innovation for Clock Services Over Optical-Fibre Networks Wojbor Bogacki, Artur Binczewski, Krzysztof Turza, Poznan Supercomputing and Networking Center; Vincenzo Capone, Tryfon Chiotis, Guy Roberts, Domenico Vicinanza, GÉANT VERENIGING; Harald Schnatz, Tara Cubel Liebisch, Physikalisch-Technische Bundesanstalt; Paul-Eric Pottie, Philip Tuckey, LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC; Davide Calonico, Cecilia Clivati, Istituto Nazionale di Ricerca Metrologica; Lada Altmannova, Vladimir Smotlacha, Radek Velc, Rudolf Vohnout, Josef Vojtech, CESNET; Ronald Holzwarth, Benjamin Sprenger, Menlo Systems; Ondrej Cíp, Lenka Pravdová, Simon Rerucha, Institute of Scientific Instruments of the CAS, v.v.i. (ISI); Javier Díaz Alonso, Eduardo Ros Vidal, University of Granada; Benoit Rat, Orolia; Jan Kodet, Ulrich Schreiber, Technical University of Munich; Jürgen Kusche, Dieter Meschede, Stefan Schröder, Simon Stellmer, Rheinische Friedrich-Wilhelms-Universität Bonn; Pawel Nogas, Robert Urbaniak, Piktime Systems sp. z o.o.; Przemyslaw Krehlik, Lukasz Sliwczynski, AGH University of Science and Technology; Anne Amy-Klein, Christian Chardonnet, LPL, Université Sorbonne Paris Nord, CNRS; Nicolas Quintin, Réseau National de Télécommunications pour la Technologie, l'Enseignement et la Recherche; Alwyn Seeds, University College London; Bruno Desruelle, Jean Lautier-Gaud, Vincent Ménoret, Martin Rabault, iXblue |
| 4. |
Experience with Time Transfer in the Optical Infrastructure CITAF Vladimir Smotlacha, Josef Vojtech, CESNET |
Thursday Sessions
PTTI
Session
P4a
Novel Methods in Time and Frequency Transfer
Session Chairs:
|
|
| Dr. Kari Moran NIWC Pacific |
Dr. Zachary Warren The Aerospace Corporation |
| 1. |
A Network Time Server Based on FPGA Hardware Felix Vietmeyer, JILA, University of Colorado; Judah Levine, JILA, University of Colorado And Time and Frequency Division, NIST Boulder |
|
| 2. |
The NIST Fiber-Based Time Service Judah Levine, Time and Frequency Division NIST Boulder |
|
| 3. |
Time Transfer using High-Definition Television (HDTV) Broadcast Transmitters in Common View Konstantin Tarasov, Bethany Bauer, Sebastian Olsen, Eugene Grayver, Howard Feil, Aerospace Corporation; Jeffrey Sherman, Aidan Montare, Matt Deutch, Glenn Nelson, Michael Lombardi, National Institute of Standards & Technology; Timothy Marczewski, David Howe, National Institute of Standards & Technology & University of Colorado, Department of Physics |
|
| 4. |
Wireless Precision Time Synchronization Alternatives and Performance Ganesh Basawapatna, Joshua White and Phillip Van Hooser, Riverside Research Institute |
|
| Alternate | ||
| 1. |
A Novel Method to Transfer Time Using the Terrestrial Timing System Sameet Deshpande, Arun Raghupathy and Payam Dehghani Rahimzadeh, NextNav Inc. |
|
PTTI
Session
P4b
Recent Innovations at Time Laboratories and National Metrology Institutes
Session Chairs:
|
|
| Dr. Giancarlo Cerretto INRIM |
Roger Brown NIST |
| 1. |
Clock Development Activities at the U.S. Naval Observatory T. G. Akin, Bryan Hemingway, Steven Peil, Precise Time Department, US Naval Observatory; J. D. Whalen, Computational Physics Inc. |
|
| 2. |
Consideration of Thermal-Beam Calcium Clocks for Timing Applications Steven Peil, Thomas G. Akin, Joseph Whalen, United States Naval Observatory |
|
| 3. |
NIST-F3, a Cesium Fountain Frequency Reference Gregory W. Hoth, Jeff A. Sherman, National Institute of Standards and Technology; Alexander G. Radnaev, Peter Mitchell, Infleqtion; Vladislav Gerginov, National Institute of Standards and Technology and University of Colorado Boulder |
|
| 4. |
Time and Frequency Over Optical Networks, Results from European Metrology Project TiFOON Per Olof Hedekvist, RISE Research Institute of Technology; Josef Vojtech, CESNET; Jochen Kronjäger, Physikalisch-Technische Bundesanstalt; Peter Whibberley, National Physical Laboratory; Davide Calonico, Istituto Nazionale di Ricerca Metrologica; Jacques Morel, Eidgenössisches Institut für Metrologie (METAS); Erik Dierikx, VSL – Nederlands Metrologisch Instituut; Krzysztof Turza, Poznan Supercomputing and Networking Center; Paul-Eric Pottie, LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC; Ondejíp, Institute of Scientific Instruments of the CAS, v.v.i. (ISI); Ulrich Schreiber, Technical University of Munich; Przemysaw Krehlik, AGH University of Science and Technology; Anne Amy-Klein, LPL, Université Sorbonne Paris Nord, CNRS; Jean Lautier-Gaud, iXblue; Vittori Curri, Politechnico di Torino |
|
| Alternate | ||
| 1. |
Common-View Multi-Constellation GNSS Time Transfer, with and Without Time-Interval Counters Aidan Montare, Jeff Sherman, Michael Lombardi, National Institute of Standards and Technology |
|
| Virtual Presentations | ||
|
Incorporation of an Optical Lattice Clock in Steering UTC(NICT) T. Ido, H. Hachisu, N. Nemitz, H. Ito, N. Ohtsubo, Y. Miyauchi, M. Morikawa and K. Matsubara, National Institute of Information and Communications Technology |
||
|
Progress Reports on the Yb Optical Lattice Clock NMIJ-Yb1 for Contributing to International Atomic Time T. Kobayashi, National Metrology Institute of Japan; D. Akamatsu, National Metrology Institute of Japan & Yokohama National University; K. Hosaka, Yokohama National University; Y. Hisai}, Yokohama National University; A. Nishiyama, A. Kawasaki, M. Wada, H. Inaba, T. Tanabe, National Metrology Institute of Japan; F.-L. Hong, Yokohama National University; M. Yasuda, National Metrology Institute of Japan |
||
PTTI
Session
P5a
Environmental Impacts on Clocks and Time Transfer
Session Chairs:
|
|
| Dr. Daphna Enzer Jet Propulsion Laboratory |
| 1. |
Measurement of Transient Environmental Effects in GPS-Disciplined Clocks Andrew Novick, Michael A. Lombardi, Time and Frequency Division, National Institute of Standards and Technology; Demetrios Matsakis, and John Clark, Masterclock, Inc. |
| 2. |
Development of Laser-Optical Clocks for Future QZSS and Experimental Evaluation of a Seven-Satellite Constellation Saya Matsushita, Hiroshi Takiguchi, Toshitaka Sasaki, Aru Suemasa, Hideki Narita, Hideki Yamada, Kyohei Akiyama, Isao Kawano, Satoshi Kogure, Japan Aerospace Exploration Agency; Takashi Tsuruta, Space Engineering Development Co., Ltd,; Yuichi Takeuchi, Mitsuru Musha, The University of Electro-Communications |
| 3. |
On Error Modeling in GNSS-based Frequency Transfer: Effects of Temperature Variations and Satellite Orbit Repeat Times Ahmed Elmaghraby, Thomas Krawinkel, Steffen Schön, Leibniz University Hannover, Institut für Erdmessung; Dirk Piester, Andreas Bauch, Physikalisch-Technische Bundesanstalt |
| 4. |
Sub-Microsecond Holdover Timing Capabilities of the Miniature Atomic Clock (MAC) Rubidium Oscillator Will Krzewick, John Bollettiero, Jay Noble, Peter Cash, Igor Kosvin, Microchip Technologies |
| Virtual Presentations | ||
|
Effects of Solar Flare Activity on GPS Satellite Timing Sources Edith Szarkowski, Johns Hopkins University |
||
|
PPP Time and Frequency Transfer Independent of Time-varying Receiver Biases Xiaolong Mi, Ahmed El-Mowafy, School of Earth and Planetary Sciences, Curtin University, Perth, Australia; Baocheng Zhang, State Key Laboratory of Geodesy and Earth’s Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences (CAS); Kan Wang: National Time Service Center, CAS, University of Chinese Academy of Sciences; Teng Liu, Yunbin Yuan: State Key Laboratory of Geodesy and Earth’s Dynamics, Innovation Academy for Precision Measurement Science and Technology, CAS |
||
PTTI
Session
P5b
Mathematical Methods and Algorithms for Timing Applications
Session Chairs:
|
|
| Dr. Michael Coleman Naval Research Laboratory |
| 1. |
An Analysis of the Steering Procedure Applied to Calculate TAI/UTC Giulio Tagliaferro, Gianna Panfilo, BIPM Time Department |
|
| 2. |
A Robust Time Scale Based on Maximum Likelihood Estimation Hamish McPhee, Jean-Yves Tourneret, University of Toulouse, ENSEEIHT-IRIT-TéSA; David Valat, CNES; Philippe Paimblanc, TéSA; David Valat, Jérome Delporte, Yoan Grégoire, CNES |
|
| 3. |
Fast and Reliable Forecasting for Satellite Clock Bias Correction with Transformer Deep Learning Wahyudin P. Syam, Shishir Priyadarshi, Andrés Abelardo García Roqué, Alejandro Pérez Conesa, GMV; Guillaume Buscarlet, Mickael Dall’ Orso, European Space Agency (ESA) |
|
| 4. |
Jitterbug: Portable COTS Timing Measurement System for Clock Analysis and Timing Applications Wil Myrick and Charlie Vines, ENSCO |
|
| Alternate | ||
| 1. |
Common Calendar Timestamp System Brooks Harris, EdlMax LLC |
|
| Virtual Presentations | ||
|
Detecting Manipulated Spaceborne Positioning and Timing Using Ground-Based Commercial-Off-The-Shelf Assets and Services Son VoBa, Sync-n-Scale |
||