Previous Abstract Return to Session C2 Next Abstract

Session C2: Integrity and Assurance 1

Resilient Commercial-off-the-Shelf (COTS) Timing Architecture for Rapid Deployment with Situational Awareness
Daniel Rosenbaum and James Patterson, United States Space Force; Amie Graf, Selenda Grimes, Wil Myrick, Brian Sexton, Charlie Vines, and Nathan Zameroski, ENSCO
Location: Ballroom C
Date/Time: Monday, Jun. 6, 5:05 p.m.

The denial of GPS and the subsequent synthesis and distribution of time/frequency standards across mission critical Weapon Systems classified as a National Security System (NSS) (W/S) is a current national security and economic threat. The near simultaneous identification/characterization of GPS threats, countermeasure response, and continuous distribution of time/frequency standards across W/S has not been demonstrated but is essential to W/S operations.
As the Satellite Control Network’s, (SCN) Systems Engineering and Integration (SE&I) prime contractor, ENSCO, has developed and will soon deploy a resilient, integrated Assured, Position, Navigation, and Timing (A-PNT) architecture based on commercial off the shelf components (COTS) for U.S. Space Force. Resilient and assured timing solutions developed and applied to the SCN by ENSCO for U.S. Space Force may be used for other W/S and unique customer needs in GPS contested environments
The SCN is a global space and ground-based configuration of resources dedicated to supporting our nation’s space program using a common-user service. As a W/S, the SCN provides essential Satellite Vehicle (SV) Telemetry, Tracking, and Commanding (TT&C) for Bus Operations, Launch and Early Orbit (LEOP), On-Orbit Satellite Payload Operations (SATOPS) and SV Anomaly Resolution (911) in support of military and National interests world-wide through timing services provided by the GPS constellation and local clock ensembles.
ENSCO’s resilient, integrated Assured Positioning, Navigation, and Timing (A-PNT) system for providing military precision time and frequency references consists of a government-off-the-shelf (GOTS) M-code/SAASM GPS receiver with embedded spoofing detection capabilities, COTS components including a GPS antenna, ensemble local timescale system, primary frequency reference, orthogonal time/frequency sources, software defined radio (SRD), and a command-and-control system. The system is entirely COTS, has multiple resiliency levels, and has undergone rapid development and testing. ENSCO’s resilient A-PNT system went from theory (white paper) to implementation on land based SCN assets in a period of 3 years all while proactively implementing cyber security best practices.
The team rapidly integrated and deployed the A-PNT system to a live fire GPS threat environment at PNTAX 2021, two weeks after receiving hardware and successfully accessed system capabilities and performance specifications. The Assured Positioning, Navigation and Timing Cross Functional Team (PNTAX 21) at White Sands, NM provided an opportunity to evaluate system performance in real world, multi-classification GPS contested environment in which jamming, and spoofing’s threat were available to stress the A-PNT system.
ENSCO/Space Force will present an overview of the A-PNT system architecture being deployed throughout the SCN, as well as data acquired and collected in both a contested and benign environment. The use of software defined radios to bolster system capabilities, by providing real time situational awareness and anomalous/threat detection is discussed. The next generation concept of this A-PNT system is discussed and includes incorporating discriminating technologies such as 1.) AI/ML PNT spectrum-based monitoring and 2.) A distributed terrestrial wireless link for two-way distribution of time and frequency signals needed to share between multiple locations in case any one location is in a GPS denied environment.



Previous Abstract Return to Session C2 Next Abstract