Proposals made at a December 27 Moscow meeting on the status and future of the satellite constellation included one to expand the GLONASS constellation to 30 satellites using six orbital planes. Five other options for upgrading the constellation were also aired.
EGNOS Toolkits Enhance GPS Accuracy Free downloadable software Toolkits at www.egnos-portal.eu can help cell-phone and handheld receiver developers […]
Non-aviation users of satellite- and ground-based augmentation systems do not require the conservative level of integrity built into these systems for aviation users. Removing it can produce substantial benefits in terms of smaller error bounds and improved availability.
As this issue goes to press in late August, the first Japan Aerospace Exploration Agency Quasi-Zenith Satellite System […]
Galileo ICD, Free at Last The European Commission (EC) has published an updated Galileo Open Service Signal-In-Space Interface […]
After reviewing current performance of WAAS, EGNOS, and MSAS, the authors present expected future performance, including the benefits of GPS L5. They evaluate the impact of the Indian GAGAN and Russian SDCM systems on global coverage and examine southward expansions for the original three SBASs. Finally, a look at the impact of a second constellation of navigation satellites and the performance for a user taking advantage of two core constellations.
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