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ION Proceedings


ION GPS-96
9th International Technical Meeting of the Satellite Division
of the Institute of Navigation

September 17-20, 1996
Kansas City Convention Center, Kansas City, Missouri

Table of Contents

Plenary Session
The Global Positioning System: A DOT Perspective of Where We Are and Where We are Going
, Frank Kruesi, Assistant Secretary for Transportation Policy; Keynote Speaker ION GPS-95..........3-6
Panel Discussion: GPS Augmentations: Performance and Safety Issues Wide Area and Local Area Systems, Moderator: Keith McDonald, Sat Tech Systems..........7-19

Session A1: Precision Approach

Results of the Boeing/Industry GPS Landing System Flight Test Experiments, T. Murphy, D. Miller, D. Heine, B. Smith Boeing Commercial Airplane Group; J. Wozniak, Ohio University ..........23-33
Development of Local Area Augmentation System Requirements, R. Swider, Federal Aviation Administration; D. Miller, A. Shakarian, S. Flannigan, Boeing Commercial Airplane Group; J.P. Fernow, The MITRE Corporation ..........35-49
Performance Evaluation of On-Airport Local Area Augmentation System Architectures,
D. Lawrence, S. Cobb, B. Pervan, G. Opshaug, P. Enge, J. D. Powell, B. Parkinson, Stanford University ..........51-58
Flying Curved Approaches and Missed Approaches: 3-D Display Trials Onboard a Light Aircraft, A. K. Barrows, P. Enge, B. W. Parkinson, J. D. Powell, Stanford University ..........59-68
Achieving Category IIIB Through UHF Augmentation, S.J. Hill, Rockwell Collins Commercial Avionics; M. S. Braasch, Ohio University ..........69-76
FAA/NRaD Simulation Testing of the E-Systems GPS-Based CAT IIIb,
S. Newman, P. Meisinger, NCCOSC RDT&E Division; G. Romrell, G. Johnson,
Raytheon Aircraft Montak Company (formerly E-Systems); C. Mannis, M. Park, Galaxy Scientific Corporation ..........77-86
System Design and Flight Experiment Results of the Pseudolite DGPS System for
Automatic Landing Flight Experiment (ALFLEX),
S. Matsumoto, H. Suzuki, T. Izumi,
National Space Development Agency of JAPAN (NASDA); M. Harigae, T. Tujii, K. Ishikawa,
T. Ono, National Aerospace Laboratory (NAL); A. Itsukaichi, H. Maeda, H.
Tomita, T. Miyano, TOSHIBA Corp. ..........87-94
Advanced Pseudolite for Dual-Use Precision Approach Applications,
C. Bartone, Naval Air Warfare Center at Ohio University ..........95-105

Session A2: New Product Descriptions

GPS Architect 12-channel Development Systems for Embedded GPS,
P. Bingham, GEC Plessey Semiconductors ..........109-115
Core Technology Developments and End-user Products at NovAtel,
S. Newby, P. Fenton, B. Townsend, NovAtel Communications Ltd. ..........117-123
The GNSS-200®: Features and Performance of the Fully Integrated Single Frequency,
12 Channel, C/A Code GPS/GLONASS Receiver,

G. Heinrichs, S. Götz, MAN Technologie AG ..........125-130
Ashtech's New GG Family of Products,
F. van Diggelen, Ashtech Inc. ..........131-140
The GG24 Combined GPS+GLONASS Receiver,
S. Gourevitch, S. Sila-Novitsky, F. van Diggelen, Ashtech ..........141-145
Blended GPS/DR Position Determination System,
S. Bennet, D. Allen, W. Acker, and R. Kidwell, Andrew Corporation ..........147-153
A High-Performance, Low-Cost 2-Chip Chipset for GPS,
G. Turetzky, SiRF Technology Inc. ..........155-159
A Modular GPS Time Sensor,
G. Zhang, A. Brown, I. Longstaff, NAVSYS Corporation ..........161-165
GPS Based Remote Hazard Detection System, M. Roberts, W. Cidela, C. Mangiarelli,
W. Michalson, W. Eggimann, W. Grogan, Worcester Polytechnic Institute ..........167-175
A RINEX Compression Format and Tools,
Y. Hatanaka, Geographical Survey Institute of Japan ..........177-183
GPS-Link: GPS Utility Program for Windows,
S. Honkus, Honkus & Associates, Inc. ..........185-194
P-RTK: A High Reliable OTF Positioning Package for Both Single and Dual Frequency Observations, D. Chen, J. Shi, GeoNav Systems ..........195-200
Dispenser Weapon System Miniature Integrated GPS/INS Tactical System (DWS-MIGITS) Design and Performance, M. Martin, Rockwell A&MSD; J. Nielson, Rockwell CACD ..........201-207

Session A3: GPS & GLONASS Performance

Welcome to the Machine: An Overview of the GPS Master Control Station Anomaly Detection and Resolution Techniques, J.D. Crum, U.S. Air Force; R.T. Smetek, Jr., Rockwell Space Operations Company..........211-231
GPS Navigation Payload Scheduled Maintenance: An Explanation of Satellite Outage Time, R.E. Bower, G.L. Dieter, U.S. Air Force ..........233-240
Performance of GPS Monitor Station Time References and On-Orbit Navstar Clocks,
T.B. McCaskill, W.G. Reid, O.J. Oaks, R.L. Beard, U.S. Naval Research Laboratory; J. A. Buisson, H.E. Warren, SFA, Inc. ..........241-249
Analysis of Stand-Alone GPS Positioning Using Post-Mission Information,
J. Henriksen, G. Lachapelle, J. Racquet, and J. Stephen, University of Calgary ..........251-259
GLONASS Performance: Measurement Data Quality and System Upkeep,
P. Misra, M. Pratt, R. Muchnik, B. Burke and T. Hall, MIT Lincoln Laboratory ..........261-270
Experiment Using GPS/GLONASS Common-View Time Transfer Between Europe and North America, W. Lewandowski, Bureau International des Poids et Mesures; J. Danaher, 3S Navigation; W. Klepczynski, ISI, Inc. ..........271-277
Transformation Parameters Between PZ-90 and WGS 84, U. Rossbach, Institute of Geodesy and Navigation (IfEN), University FAF Munich; H. Habrich, Institute of Applied Geodesy; N. Zarraoa, DLR-DFD Remote Sensing Ground Station Neustrelitz ..........279-285
On Combined Application of GLONASS and GPS Systems in Conditions of Limited Observability of Navigation Satellites, S. Averin, V. Vinogradov, N. Ivanov, V. Salichev, Russian Research Institute for Space Device Engineering ..........287-295
A Common View Analysis of Data Collected from DMA GPS Monitor Stations,
D. Munton, C. Coker, Applied Research Lab-University of Texas; T. Creel, Defense Mapping Agency ..........297-305
Integrated Use of GPS and GLONASS: Transformation Between WGS 84 and PZ-90,
P. Misra, R. Abbot, E. Gaposchkin, MIT Lincoln Laboratory ..........307-314

Session A4: Marine Applications

Evaluation of Environmental Condition Using Marine GPS, S. Okuda, Y. Arai, Marine Technical College ..........317-324
USCG 21St Century Buoy Tender, J. Spalding, R. Crowell, L. Luft, USCG R&D Center ..........325-333
Current Maritime and Land Experiments in Poland, K. Vorbrich, Polish Academy of Sciences; M. Dziewicki, Navigation Department of the Maritime Office in Gdynia, Poland;
L. Gajewski, Maritime Institute in Gdansk, Poland; T. Stupak, Merchant Academy in Gdynia ..........335-344
A Maritime Experimental System, R. Fiedler, M. Gluch, J. Kirchner, A. Libertin, J. Majohr, University of Rostock ..........345-351
DGPS Integrity Monitor for Marine Seismic Surveys, E. Vigen, Geco-Prakla ..........353-357
Position Control System for Work Boat at Sea Using Single-Frequency RTK, K. Soen, K. Sudo, Kittaka Engineering Laboratory Co. Ltd.; T. Tutiya, Technical System Co., Ltd. ..........359-366
On-The-Fly GPS Kinematic Positioning for Measuring Squat and Trim of Large Ships,
Y. Feng, K. Kubik, Queensland University of Technology; S. O'Mahony, Queensland Department of Transport ..........367-373
The Study on the Development of a Ship's GPS-Compass Using Two GPS Receivers, K. Ko, J. Lim, Y. Sim, Korea Naval Academy; S. Hwang, Korea Maritime University ..........375-384
DGPS Correction Data Broadcasting in Japan by MF Marine Radiobeacons and Evaluation of the Positioning Accuracy, A. Yasuda, H. Namie, T. Yamada, T. Takahashi, Tokyo University of Mercantile Marine; M. Takayama, Japanese Maritime Safety Agency ..........385-392
Applicability of GPS to Tide Level Observations in "Kanmon" Strait Area, K. Hamada, Ministry of Transport; T. Hayashi, Furuno Electric Co. Ltd.; N. Shimizu, Yamaguchi University ..........393-402

Session B1: Aircraft Applications

Algorithm for Carrier Adjusted DGPS Positioning,
X.-X. Jin, Delft University of Technology ..........405-414
Final Results of a Flight Test Program to Develop a New Terminal Instrument Procedures (TERPS) for GPS Approaches Using Category A and B Aircraft, H. Hejjo, J. Fagan, D. Clemens, University of Oklahoma; R. Sexton, Innovative Solutions International; G. MacCartor, FAA ..........415-424
GPS Instrument Approach Procedures Development and Flight Inspection,
J.R. Snow, Federal Aviation Administration ..........425-430
Bancroft's Algorithm is Global Nonlinear Least Squares,
J. Chaffee, ZC&D Dynamic Systems, Inc.; K. Kovach, ARINC, Inc. ..........431-437
Analytical Derivation of Maximum Tolerable In-Band Interference Levels for Aviation Applications of GNSS, C. Hegarty, The MITRE Corporation Center for Advanced Aviation System Development ..........439-448
Local DGPS with Pseudolite Augmentation and Implementation Considerations for LAAS, K.J. Bartrop, J.F. Stafford, B. D. Elrod, Stanford Telecommunications, Inc. ..........449-459
Carrier Phase GPS and Computer Vision for Control of an Autonomous Helicopter,
B. Woodly, H. Jones, E. LeMaster, E. Frew, S. Rock, Stanford University ..........461-465
SAPPHIRE How Does GNSS Perform Onboard of Commercial Airliners?
B. Tiemeyer, A. Watt, N. Bondarenco, Eurocontrol Experimental Centre ..........467-473
Flight Trials of a Regional Area Augmentation System (RAAS) for En-Route Navigation,
J. Lawson, H. Mistry, NATS; L. Dutton, Racal Avionics; A.E. McGregor, DRA ..........475-481

Session B2: Land Applications

System Identification of a Farm Vehicle Using Carrier-Phase Differential GPS,
G. Elkaim, M. O'Connor, T. Bell, and B. Parkinson, Stanford University ..........485-494
A Comparison of Rapid GPS Techniques for Development of Topographic Maps for Precision Farming, R. Clark, R. Lee, University of Georgia ..........495-504
Enhanced GPS Usage in Urban Environments,
K. Liu, SiRF Technology; M. Chansarkar, Aerospace Systems Ltd. ..........505-508
GPS-Based Travel Data Collection,
D. Roden, JHK & Associates ..........509-517
Statewide Deployment of Colorado's MAYDAY System,
V. Cash, NAVSYS Corporation ..........519-525
Analysis and Simulation of Candidate Deployment Geometries and Characteristics of Pseudolites Within a Tunnel, R. Galijan, SRI International ..........527-533
An Evolutionary Automated Highway System Concept Based on GPS,
J. Sinko, R. Galijan, SRI International ..........535-544
GPS Based Positive Train Control: Developments and Field Trials,
A. Lissner, N. Kloss, Kayser-Threde GmbH ..........545-552

Session B3: Atmospheric Effects

The Impact of Ionospheric Scintillations on GPS Performance,
M. Knight, A. Finn, Defense Science and Technology Organization ..........555-564
Observed Ionospheric Dependence on Solar Activity: Implications for a New Single Frequency GPS User Algorithm, P. Doherty and D. Decker, Boston College; J. Klobuchar, Innovative Solutions International; D. Anderson, Phillips Lab; B. Wilson, JPL ..........565-574
Ionospheric Error Compensation for GPS Receivers Using Real-Time Ionospheric Model,
B. Wu, P. Nicolaides, T. Upadhyay, Mayflower Communications; T. Jenkins, Wright Laboratory, WPAFB ..........575-583
Ionospheric Specification for the Wide Area Augmentation System (WAAS) Simulation Studies, S. Chavin, Illgen Simulation Technologies .......... 585-594
Upcoming Ionospheric Impacts on GPS at Solar Max What Do We Know/What Do We Need? G. Bishop, S. Basu, K. Groves, Phillips Laboratory; K. Lehneis, D. Jacobs, P. Gehred, D. Howell, Wright Laboratory, WPAFB; G. Bainum, D. Goldizen, Air Force Institute of Technology, WPAFB ..........595-604
Observing Ionospheric Profiles Using a Dual Frequency Translator,
A. Brown, D. Caffery, NAVSYS Corporation ..........605-613
Strategies for GPS-Based Estimates of Troposphere Delay,
Y. Bar-Server, Jet Propulsion Laboratory ..........615-623
Measurements of Precipitable Water Vapor by GPS, Radiosondes, and a Microwave Water Vapor Radiometer, A. Coster, MIT Lincoln Laboratory; A. Neill, MIT Haystack Observatory; F. Solheim, Radiometrics Corp.; V. Mendes, P. Toor, University of New Brunswick; K. Buchmann, C. Upham, MIT Lincoln Laboratory ..........625-634
A New, Improved Ionospheric Correction Algorithm for Single Frequency GPS Receivers,
R. Daniell, Jr., L. Brown, R. Simon, Computational Physics, Inc. ..........635-640
Comparison of GPS Estimates of Wet Tropospheric Delays with WVR Measurements,
Y. Nam, D. Kuang, B. Schutz, University of Texas at Austin ..........641-646
The Effects of the Ionosphere and C/A Frequency on GPS Signal Shape: Considerations for GNSS-2, J. Christie, B. Parkinson, P. Enge, Stanford University ..........647-653

Session B4: Multipath

Strobe and Edge Correlator Multipath Mitigation For Code,
L. Garin, F. van Diggelen, J.-M. Rousseau, Ashtech ..........657-664
Multipath Elimination For The Low-Cost Consumer GPS,
P. Mattos, SGS-Thomson MicroElectronics ..........665-671
Determination and Reduction of GPS Reference Station Multipath Using Multiple Receivers, J. Raquet, G. Lachapelle, University of Calgary ..........673-681
An Adaptive SNR-Based Carrier Phase Multipath Mitigation Technique,
C. Comp, P. Axelrad, University of Colorado ..........683-697
On Correlation Processes Reducing Multipath Errors in the L1 GPS Receiver,
D. Doris, A. Benhallam, Ecole Nationale de l'Aviation Civile ..........699-708
Numerical Modeling of GPS Signal Propagation and Multipath,
R. Walker, K. Kubik, Queensland University of Technology ..........709-717
GPS Dynamic Multipath Analysis in Urban Areas,
B. Eissfeller, J. O. Winkel, University FAF Munich 719-727
Development of a Real-time Multipath Monitor and Experimental Results,
K. Itani, Furuno Electric Co., K. Hamada, Ministry of Transport (Japan); T. Hayashi, Furuno Electric Co. ..........729-738
Simulating GPS Receiver Measurement Errors,
J. Auton, J. Cruz, Illgen Simulation Technologies, Inc. ..........739-747
GPS Differential Positioning Using Quality Controlled P-Code Pseudoranges,
I. Song, Samsung Data Systems Co., Ltd. ..........749-757

Session C1: Wide Area Augmentation Systems (WAAS)

GPS Signal Selective Availability Modeling and Simulation for FAA, WAAS IV&V,
Y. Bian, Illgen Simulation Technologies ..........761-769
WAAS Receiver Carrier Tracking Loop and Data Demodulation Performance in the Presence of Wideband Interference,
B. Schnaufer, G. McGraw, Rockwell Collins Commercial Avionics ..........771-780
Study of WAAS Ionospheric Integrity,
Y.-C. Chao, S. Pullen, P. Enge, B. Parkinson, Stanford University ..........781-788
An Ionospheric Correction Algorithm for WAAS and Initial Test Results,
A. Draganov, T. Chashin, J. Murray, Stanford Telecommunications, Inc. ..........789-797
Lockheed Martin Wide Area Differential GNSS Testbed Results,
A. Gower, T. Parker, J. Rudd, Lockheed-Martin; H. Beisner, Paradeigma, Inc. ..........799-811
Independent Data Verification and Validation (IDV&V) Algorithms for WAAS and Preliminary Results, S. Pogorelc, A. Draganov, B. Harding, T. Cashin, K. Murdock, Stanford Telecommunications, Inc. ..........813-825
Validation of Ranging Signal Control Techniques for Geostationary Satellite Navigation Payloads, R. Coker, C. Debord, Wilcox Electric; Inc, A.J. Van Dierendonck, GPS Silicon Valley ..........827-833
Flight and Static Test Results for NSTB, S. Pogorelc, D. Brown, Stanford Telecommunications, Inc.; P. Enge, T. Walter, Stanford University; M. DiMeo, SRC; S. Kalinowski, ISI; T. Dehel, FAA Technical Center ..........835-845
Generation of Wide Area Differential GPS Corrections for Satellite Orbits
and Clocks Partly Based on IGS Precise Orbital Solutions,
Y. Feng, M. Kinsella, K. Kubik, Queensland University of Technology ..........847-853
UTC Time Reference from WAAS in Real Time,
R. Loh, G. Winkler, Innovative Solutions International (ISI) ..........855-858

Session C2: Kinematic Positioning and Ambiguity Resolution

Compact Data Transmission Standard for High-Precision GPS,
N. Talbot, Trimble Navigation ..........861-871
Test Results from a New 2 cm Real Time Kinematic GPS Positioning System,
J. Neumann, A. Manz, T. Ford, O. Mulyk, NovAtel Communications Ltd. 873-882
Dual Baseline Real-Time OTF Kinematic GPS,
D. Lapucha, R. Barker, John E. Chance and Associates, Inc. ..........883-888
The Volume of the GPS Ambiguity Search Space and its Relevance for Integer Ambiguty Resolution, P. Teunissen, P. de Jonge, C. Tiberius, Delft University of Technology ..........889-898
GPS and GLONASS Carrier Phase Ambiguity Resolution,
D. Walsh, P. Daly, University of Leeds ..........899-907
Treatment of Integer Ambiguities in DGPS/DGLONASS Double Difference Carrier Phase Solutions, U. Rossbach, G. Hein, Institute of Geodesy and Navigation, University FAF Munich ..........909-916
Carrier Phase Ambiguity Resolution using GPS and GLONASS Signals,
H. Landau, U. Vollath, terraSat GmbH ..........917-923
Analysis of the Error Probability and Stopping Time of the MAPAS Procedure,
C. Macabiau, A. Benhallam, Ecole Nationale de l'Aviation Civile ..........925-934
Computational Aspects of the LAMBDA Method for GPS Ambiguity Resolution,
P. de Jonge, C. Tibernius, P. Teunissen, Delft University of Technology ..........935-944
An Analysis of GPS Positioning Accuracy and Reliability with Dual-Frequency Data,
Y. Gao, J. McLellen, Pulsearch Navigation Systems, Inc. ..........945-951

Session C3: Integrated Systems

Design and Analysis of a High-Accuracy Airborne GPS/INS System,
R. Da, The Ohio State University; G. Dedes, Topcon-GeoComp Ltd.; K. Shubert, Battelle ..........955-964
Kinematic DGPS and INS Hybridization for Precise Trajectory Determination,
A. Masson, D. Burtin, M. Sebe, LRBA ..........965-973
An Integrated Low Cost GPS/INS Attitude Determination and Position Location System,
R. Wolf, G. Hein, B. Eissfeller, E. Loehnert, Institute of Geodesy and Navigation (IfEN) University FAF Munich ..........975-981
Multi-application GPS/Inertial Navigation Software,
I. Longstaff, L. Burton, D. Tieben, C. Koop, NAVSYS Corporation ..........983-988
On the Stability Investigation of Integrated GPS/INS Navigation Systems,
D.-J. Jwo, D. Tuckness, Jr., University of Texas at Arlington ..........989-1000
Flexible Software Implementation for a Miniature Integrated GPS/INS Tactical System,
D. MacDonald, T. DeVries, D. Merna, Rockwell Autonetics and Missile Systems Division ..........1001-1008
On the Possible Applications of the DGPS/(LOW-COST-IMU) Technique,
K. Vorbrich, J. Zielinski, Polish Academy of Sciences ..........1009-1018

Session C4: Attitude Determination

GPS Attitude Determination Used for Fire Support in the Army,
R. Cole, ARINC ..........1021-1027
High Precision Attitude Using Low Cost GPS Receivers,
M. Dumaine, Canadian Marconi Company ..........1029-1035
Flight Results of GPS-Based Attitude Control on the REX-2 Spacecraft,
E. Lightsey, E. Ketchum, T. Flatley, NASA-Goddard Space Flight Center; J. Crassidis, CU-Department of Mechanical Engineering; D. Freesland, K. Reiss, D. Young, CTA Space Systems ..........1037-1046
A Combined Filter for GPS-Based Attitude and Baseline Estimation,
L. Ward and P. Axelrad, University of Colorado ..........1047-1061
Testing of a GPS-Based Attitude Control System, J. O'Donnell, Jr., J. McCullough, E. G. Lightsey, R. Schnurr, NASA-Goddard Space Flight Center; L. Jackson, Orbital Sciences Corporation ..........1063-1072
GPS Attitude Determination From Double Difference Differential Phase Measurements,
R. Fuller, J. Rodden, Space Systems Loral; S. Gomez, NASA-Johnson Space Center; L. Marradi, Laben S.p.A. ..........1073-1080
GPS Based Attitude Determination On Non Aligned Antenna Arrays,
E. Lightsey, NASA-Goddard Space Flight Center; B.W. Parkinson, Stanford University ..........1081-1090
Sensitivity of GPS-based LEO Satellite Attitude Determination,
W. Rupp, Universal Communication ..........1091-1099

Session D1: GNSS & WAAS Architectures

Second Civilian Frequency (L5) with WAAS and Navigation Messages on Block IIF Satellite, M. Ananda, P. Massatt, P. Munjal, K. Woo, M. Zeitzew, The Aerospace Corp.; D. Hanlon, FAA, K. Snadhoo, The MITRE Corp. ..........1103-1117
An Improved Space Segment for the End-State WAAS and EGNOS Final Operational Capability, E. Copros, J. Spiller, T. Underwood, C. Vialet, Matra Marconi Space ..........1119-1125
Towards 10 Millimetre Real-Time Position Determination and 30 Picosecond Time-Transfer Capability with the Next Generation of Global Navigation Satellite Systems (GNSS), C. Hodge, J. Davis, J. Gallop, National Physical Laboratory, UK; D. Allan, Allan's Time; N. Ashby, University of Colorado; S. Bedrich, GeoForschungsZentrum Ptosdam; L.S. Cutler, Hewlett Packard; J. Hahn and H. Nau, Deutsche Forschungsanstalt fur Luft und Faumfahrt; R. Kern, Kernco, Inc.; L. Maleki, Jet Propulsion Lab; W. Lewandowski, Bureau International des Poids et Mesures; L. Maleki, NASA-JPL; R. Vessot, Smithsonian Astrophysical Lab ..........1127-1142
EGNOS, the European Regional Augmentation to GPS and GLONASS,
S. Loddo. D. Flament, Thomson-CSF; J. Benedicto, P. Michel, European Space Agency ..........1143-1150
Optimum Satellite Constellations for Civilian Navigation Use,
M. Sams, Wilcox Electric; S. Mahooti, Thomson-CSF; Q. Hua, A.J. Van Dierendonck, GPS Silicon Valley ..........1151-1160
Integration of WAAS and LAAS,
W. Hundley, M. Sams, W. Dohlman, Wilcox Electric, Inc. ..........1161-1169
The Concept of Establishing of the Russian Satellite Differential and Integrity
Monitoring Systems and Its Integration with the GPS Differential Concept,

Y. Medvekov; Russian Space Agency; Y. Silantiev, Internavigation Committee ..........1171-1172
The Interface Between GNSS and Air Traffic Control,
R. Farnworth, N. Makins, A. Watt, J. Storey, Eurocontrol Experimental Centre .......... 1173-1181
Navigation and Timimg Accuracy at the 30 Centimeter and Subnanosecond Level,
N. Ashby, University of Colorado; D. Allan, Allan's Time ..........1183-1202

Session D2: Surveying and Geodesy

A New Approach for Field Calibration of Absolute Antenna Phase Center Variations,
G. Wuebbena, Geo++, F. Menge, M. Schmitz, G. Seeber, C. Voelksen, Universitaet Hannover ..........1205-1214
A New Reliability Measure for Dynamic Surveying Systems and its Application in Dynamic System Quality Control, M. Jia, Curtin University of Technology; C. Rizos, University of New South Wales; X. Ding, Curtin University of Technology ..........1215-1223
GPS Navigation Techniques in Open Pit Deformation Monitoring,
M. Stewart, M. Tsakiri, X. Ding, Curtin University of Technology ..........1225-1231
A Study of DMA's Prediction Accuracy on Earth Orientation Parameters,
P. Kopcha, Defense Mapping Agency; B. van Gelder, Purdue University ..........1233-1241
Dynamic Estimation of Rail and Highway Grade and Curvature,
D. Brzezinska, The Ohio State University Center For Mapping ..........1243-1251
Precision Surveying Using the DoD PLGR SPS Receiver-Initial Results,
J. Kelly, W. Higgins, G. Bachman, Rockwell, CACD; H. Martell, D. Cosandier, Premier GPS/Waypoint Consulting, Inc. ..........1253-1261
Orthometric Heights Determination Without Geoidal Model Using GPS,
Y. Melzer, M. Rosenblum, Survey of Israel; Y. Felus, Halperin-Felus Ltd. ..........1263-1267
Using GPS Satellites to Measure Star Positions,
J. Sinko, A. Takahashi, SRI International ..........1269-1274
Development of A GPS Geomorpologic Field Work System,
J.T. Lee, Chung Cheng Institute of Technology, ROC ..........1275-1282
Determining UT1 at U.S. Naval Observatory by Analysis of Global Positioning System Orbits, P. Kammeyer, U.S. Naval Observatory ..........1283-1290

Session D3: Space Applications

Space-Based GPS 1996 Mission Overview,
F. Bauer, J. O'Donnell, Jr., NASA-GSFC ..........1293-1302
Global Positioning System Enhanced Orbit Determination Experiment (GEODE) on the
Small Satellite Technology Initiative (SSTI) Lewis Spacecraft,
R. Hart, K. Hartman,
NASA-Goddard Space Flight Center; A. Long, T. Lee, D. Oza, Computer Sciences Corp. ..........1303-1312
Direct Solution of the GPS Equations, I. Biton, M. Kifman, Technion-Israel Institute of Technology; I.Y. Bar-Itzhack, NASA- Goddard Space Flight Center ..........1313-1320
Technologies for Spacecraft Formation Flying,
J. Adams, A. Robertson, K. Zimmerman, J. How, Stanford University ..........1321-1330
GPS Navigation on the HEO Satellite Mission EQUATOR-S: Results of the Feasibility Study, B. Eissfeller, O. Balbach, U. Rossbach, IfEN, University FAF Munich; J. Fraile-Ordonez, Kayser-Threde GmbH ..........1331-1340
Using GPS for Telemetry System Clock Generation and Synchronization On-Board Sounding Rockets, S. Powell, P. Kintner, Cornell University ..........1341-1348
GPS Tracking of Sounding Rockets and Boosters Recovery: Developments and Mission Results, A. Lissner, N. Kloss, J. Fraile-Ordonez, G. Schmitt, Kayser Threde GmbH ..........1349-1353
Carrier Differential GPS for Real-Time Control of Large Flexible Structures,
E. Teague, J. How, B. Parkinson, Stanford University ..........1355-1365
Modular Software for Spacecraft Navigation Using the Global Positioning System (GPS), S. Truong, K. Hartman, D. Weidow, D. Berry, NASA-Goddard Space Flight Center; D. Oza, A. Long, T. Lee, Computer Sciences Corp. ..........1367-1376
GPS Receiver Development and Verification Tests for the Stanford Gravity Probe B Relativity Mission Verification Test Plan and Preliminary Results, H. Uematsu, B. Parkinson, Stanford University ..........1377-1385

Session D4: Student Session

GNSS Code and Carrier Tracking in the Presence of Multipath,
G. Brodin, The University of Leeds ..........1389-1398
Exploring the Limits of GPS-Based Precise Orbit Determination,
G. Davis, The University of Texas at Austin ..........1399-1408
Low-Cost Sensor Constraint GPS Vehicle Navigation in an Urban Environment,
N. Hayashi, The University of Calgary ..........1409-1417
Quality Control Issues Relating to Instantaneous Ambiguity Resolution for Real-Time GPS Kinematic Positioning, S. Han, The University of New South Wales ..........1419-1430
Perspectives of GLONASS/GPS Satellite System for Aerospace Navigation,
V. Darnopykh, V. Malyshev, Moscow Aviation Institute ..........1431-1440
Robust and Reliable Kalman Filtering of GPS Data,
A. Mohamed, The University of Calgary ..........1441-1450
Fuzzy Adaptive Stabilization of Higher Order Kalman Filters in Application to Precision Kinematic GPS, K. Mostov, University of Berkley; A. Soloviev, Moscow University of Physics and Technology ..........1451-1456
Integration of a GPS Multi-Antenna With a CCD Camera for Rapid GIS Data Acquisition, H. Sun, The University of Calgary ..........1457-1464

Session E1: GNSS, GPS, and GLONASS Policy Issues

European Commission Action to Consolidate the European Contribution to a GNSS,
J. Beale, European Commission; P. Campagne, FDC ..........1467-1471
Scenario for a Gradual Build-Up of a Second Generation GNSS,
C. Texier, E. Frayssinhes, Alcatel Espace ..........1473-1481
Can GNSS be Certified for Civil Aviation?
B. Tiemeyer. A. Watt, R. Farnworth, Eurocontrol Experimental Centre ..........1483-1491
GLONASS Integrity and Reliability Assessment From Operational Experience During 1995, V. Durnev, Russian Space ForcesVKS, Russia; Y. Silantiev, Internavigation Research and Technical Center ..........1493-1496
The Main Areas of Integrating the GLONASS System into the Global Navigation Satellite System (GNSS), Y. Medvedkov, Russian Space Agency ..........1497-1499
Privatization and Commercialization of GPS,
A. Pinker, J. Hasik, ANSER ..........1501-1509
A Concept for GNSS2: Improving Accuracy and Availability for Better Addressing Mass Market, J. Pieplu, N. Marchal, Thomson-CSF; B. Christophe, Onera, D. Hill, Vega, N. Niklasch, MAN Technologie ..........1511-1519
GPS Techniques for Geodesy and Geodynamics International Cooperation of Fifteen Countries of the Central European Initiative (CEI), J. Sledzinski, Warsaw University of Technology ..........1521-1526

Session E2: Military Applications

Jammer Design for GPS Signals,
B. Priel, Tamam I.A.I.; B. Bobrovsky, Tel Aviv University ..........1529-1534
Using GPS to Guide a Gun-Launched Projectile for Naval Surface Fire Support,
A. Evans, J. D. Hagan, J. Fraysse, L. DeSimone, T. Doran, G. Wiles, Naval Surface Warfare Center ..........1535-1543
Submeter Accuracy Reference System For High Dynamics and High Jamming Applications, T. Upadhyay, S. Cotterill, B. Wu, P. Nicolaides, R. Hatch, Mayflower Communications Company Inc. ..........1545-1552
Operational Field Trials of GPS Equipped Sonobuoys,
P. Brown, NAVSYS Ltd.; T. Kirby-Smith, Defense Research Agency ..........1553-1561
GPS Mineclearing An Interim Report,
J. Kelly, K. Hahn, Rockwell CACD ..........1563-1576
GPS in Pilotless Aircraft,
M. Cozier, Defence Test and Evaluation Organisation .......... 1577-1579
GPS Transponder Systems for New Dimensions in Real Time Vehicle Simulation,
P. Bergljung, J. Risberg, Saab Dynamics AB ..........1581-1586
The Use of GPS for the Guidance of Ballistic Missiles, J. Fields, K. Shallberg, Zeta Associates Inc.; P. Ward, Navward GPS Consulting ..........1587-1595

Session E3: Integrity

GPS/IRS AIME: Certification for Sole Means and Solution to RF Interference,
J. Diesel, G. Dunn, Litton Aero Products ..........1599-1606
Investigation and Comparison of Horizontal Protection Level and Horizontal Uncertainty Level in FDE Algorithms, R. Young, G. McGraw, B. Driscoll, Rockwell-Collins Commercial Avionics ..........1607-1614
Ohio University LAAS Integrity Monitoring: Design and Performance,
T. Skidmore, F. van Graas, F. Liu, Ohio University ..........1615-1621
A Comprehensive Integrity Verification Architecture for On-Airport LAAS Category III Precision Landing, S. Pullen, B. Pervan, P. Enge, B. Parkinson, Stanford University ..........1623-1634
An Integrity Monitoring Scheme for Precision Approach Applications,
M. Brenner, Honeywell CAS-SPO ..........1635-1644
A Position-Domain Ground-Based Integrity Method for LAAS,
C. Shively, Y. Lee, The MITRE Corporation ..........1645-1656
Removal of SA: Benefits to GPS Integrity,
K. Van Dyke, U.S. DOT Volpe Center ..........1657-1670
Simulation Testing of Precision Approach Integrity Algorithms,
R. Cole, ARINC ..........1671-1675
A New, Generally Applicable Metrics for RAIM/AAIM Integrity Monitoring,
P. Ober, Delft University of Technology ..........1677-1686
Integrity Monitoring of Integrated Satellite/Inertial Navigation Systems Using the Likelihood Ratio, J. Palmqvist, Linköping University ..........1687-1696

 Session E4: User Equipment Technology

Effectiveness of Two Satellite Tracking in Urban Canyon Environments,
J. B. Bullock, G. J. Geier, T. M. King, H. Kennedy, Motorola Position & Navigations Systems Business ..........1699-1707
High Dynamic, Dual Frequency Tracking with a Low Bandwidth Digital Translator,
A. Brown, A. Matini, D. Caffery, NAVSYS Corporation ..........1709-1717
HAPPI a High Accuracy Pseudolite/GPS Positioning Integration,
T. Ford, J. Neumann, N. Toso, W. Petersen, C. Anderson, P. Fenton, Novatel Communications Ltd.; T. Holden, K. Barltrop, Stanford Telecom ..........1719-1728
Fast Code Acquisition with FFT and its Sampling Schemes,
C. Yang, Signal & System Technologies ..........1729-1734
Design and Monte Carlo Simulations of a WAAS GPS Receiver Channel with Decision Feedback, P. Ward, Navward GPS Consulting; K. Barron, Texas Instruments Inc. ..........1735-1743
A Method for Dissemination of DGPS Corrections by FM-RDS and Tests of Some GPS Receivers, K. Aarmo, A. Rinnan, SEATEX, B. Forssell, Norwegian University of Science & Technology ..........1745-1751
Ultra-High Performance Differential GPS Systems: Extending Accuracy and Weak-Signal Tracking Capability, L. Weill, California State University, Fullerton ..........1753-1762
A Combined Right Hand Circular and Linear Polarisation Antenna For GPS and Cellular Telephone Usage, O. Leisten, Navstar Systems Ltd. ..........1763-1769
Signal Processing Algorithm to Mitigate Interference on an MCM GPS Chipset Receiver,
L. Giulianelli, O. Caldwell, University of Texas at Austin ..........1771-1776
Global Navigation Satellite System Software Radio Implementation,
D. Akos, M. Braasch, Ohio University ..........1777-1783

Session F1: Precise Positioning Using Reference Networks

Real-Time GPS Correction Service of the Canadian Active Control System,
M. Caissy, P. Heroux, F. Lahaye, K. MacLeod, J. Popelar, Geomatics Canada;
J. Blore, D. Decker, Hewlet-Packard Ltd., R. Fong, tesserNet Systems, Inc. ..........1787-1791
Performance Evaluation of the NRCAN Wide Area System,
S. Skone, M. E. Cannon, University of Calgary; K. Lochhead, P. Héroux, F. LeHaye,
Geodetic Survey Division, Natural Resources Canada ..........1793-1802
New Developments in the SWEPOS Network, G. Hedling, B. Jonsson, Geodetic Research Division, National Land Survey of Sweden ..........1803-1808
Investigation of Annual Variations in the WCDA GPS Soultions, X. Chen, R. Langley, University of New Brunswick; H. Dragert, Geological Survey of Canada ..........1809-1818
A Prototype WADGPS System for Real Time Sub-Meter Positioning Worldwide,
T. Yunck, Y. Bar-Sever, W. Bertiger, S. Lichten, U. Lindqwister, A. Mannucci,
R. Muellerschoen, T. Munson, L. Romans, S. Wu, Jet Propulsion Laboratory ..........1819-1826
GPS Network Design and Error Mitigation for Real-Time Continuous Array Monitoring Systems, S. Han and C. Rizos, University of New South Wales ..........1827-1836
Analysis of Methods for the Combination of the Regional Central European
GPS Network With the Global IGS Network,
M. Piraszewski, Warsaw University of Technology; M. Figurski, Military University of Technology ..........1837-1844
Reducing Distance Dependent Errors for Real-Time Precise DGPS Applications by
Establishing Reference Station Networks,
G. Wuebbena, A. Bagge, Geo++; G. Seeber, V. Boeder, Universitaet Hannover; P. Hankemeier, Vermessungsamt ..........1845-1852
Preliminary Determination of Ice Flow Velocity in West Antarctica Using High Precision GPS Measurements, X. Chen, General Sciences Corp.; R. Bindschadler, NASA Goddard Space Flight Center; P. Vornberger, General Sciences Corporation ..........1853-1861

Session F2: Specialized Military Equipment Technology

Quality Analysis of GPS Signals Received on an Agusta Chopper: Influence of the Antenna Location, A. Muls, Royal Military Academy of Belgium; J.-M. Sleewaegen, C. Bruyninx, Royal Observatory of Belgium ..........1865-1872
Advanced 3-D Visualization for GPS Data, R. Toliver, SRI International; R. Brown, U.S. Navy; L. Martin, U.S. Army; K. Guthery, Computer Explorations Inc. ..........1873-1880
Open Architecture in a DoD Receiver: Results and Prospects,
R. Bartholomew, Rockwell CACD ..........1881-1890
Enhanced Precision Targeting Using a PLGR GPS Receiver Integrated With a Laser Range Finder, M. Johnson, N. Russo, Rockwell CACD ..........1891-1899
Test Results of GPS Dropwindsondes and Application of GPS in
Precision Airdrop Capability Using the TIDGET GPS Sensor,

D. Caffery, A. Matini, NAVSYS Corporation ..........1901-1904
Performance Improvement Using NMCT and the Analysis of J/S for Fast Acquisition in PGM Applications, S. Mahmood, J. Solomon, R. James, Sverdrup Technology, Inc. ..........1905-1916
Effects of Platform Rotation on GPS with Implications for Simulators,
A. Tetewsky, F. Mullen, Charles Stark Draper Laboratory ..........1917-1925

Working Group GLONASS/GPS Interoperability

A Report on the First Meeting of the GLONASS-GPS Interoperability Working Group,
W. Senus, Defense Mapping Agency; P. Misra, MIT Lincoln Laboratory ..........1929-1930