GNSS Interoperability through International Cooperation - GPS.gov

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Improving Interoperability (1) • Geodetic reference frames of individual systems appear to be converging to within centimeters − Maintaining alignment of reference frames with ITRF should ensure this trend continues • A GNSS ensemble time could be realized by the monitoring of all constellations from common sites – Individual system times could then be compared to this “GNSS time” and the resulting corrections could be made available for broadcast through multiple channels • Core global constellations, regional systems, SBAS, and the internet are all possibilities 12
Improving Interoperability (2) • More Frequency commonality with common signal spectrum – Simplifies multi-constellation monitoring – Reduces cost of consumer-grade receivers – Minimizes time and frequency biases • Greater service provision transparency – Timely and widely available interface specifications and performance standards for individual constellations – Transparent operation of common monitoring stations and widely available information on obtaining corrections 13
Page 1 and 2: GNSS Interoperability through Inter
Page 3 and 4: U.S. National Space Policy Space-Ba
Page 5 and 6: GALILEO IRNSS QZSS The Goal of Civi
Page 7 and 8: International Committee on Global N
Page 9 and 10: ICG Working Group on Compatibility
Page 11: Ideal Interoperability (Interchange
Page 15 and 16: Almost Ideal Interoperability Ensem
Page 17: Thanks! David A. Turner Deputy Dire

GNSS Interoperability through International Cooperation - GPS.gov

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