Dr. Gregory Gutt (Satelles) presented “Current Operational Status of Low Earth Orbit (LEO) Satellite-based Time and Location” at the 2018 National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board Meeting, held in Baltimore, Maryland from May 16-17, 2018. The PNT Advisory Board provides independent advice to the U.S. government on GPS-related policy, planning, program management, and funding profiles in relation to the current state of national and international satellite navigation services. This year’s agenda included the following topics:
- Update on U.S. Space-Based Positioning, Navigation and Timing (PNT) Policy and Global Positioning System (GPS) modernization
- Current and planned GPS capabilities and services while assessing future PNT architecture alternatives with a focus on affordability
- Methods in which to Protect, Toughen, and Augment (PTA) access to GPS/Global Navigation Satellite Systems (GNSS) services in key domains for multiple user sectors
- Economic impacts of GPS/GNSS on the United States and in select international regions, with a consideration towards effects of potential PNT service disruptions if radio spectrum interference is introduced
- Potential benefits, perceived vulnerabilities, and any proposed regulatory constraints to accessing foreign Radio Navigation Satellite Service (RNSS) signals in the U.S. and subsequent impacts on multi-GNSS receiver markets
- Opportunities for enhancing the interoperability of GPS with other emerging international GNSS
- Emerging trends and requirements for PNT services in U.S. and international fora through PNT Board technical assessments, including back-up services for terrestrial, maritime, aviation, and space users
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