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The Interoperable Global Navigation Satellite Systems Space Service Volume

image of The Interoperable Global Navigation Satellite Systems Space Service Volume

The availability and performance of global navigation satellite systems (GNSS) signals at high altitude is documented as the GNSS Space Service Volume (SSV). While different definitions of the SSV exist and may continue to exist for the different service providers, within the context of this booklet it is defined as the region of space between 3,000 km and 36,000 km above the Earth’s surface, which is the geostationary altitude. For space users located at low altitudes (below 3,000 km), the GNSS signal reception is similar to that for terrestrial users and can be conservatively derived from the results presented for the lower SSV in this booklet.

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Detailed simulation configuration and results

This chapter provides the full set of SSV simulation results, as well as the configuration and methodology used to execute the simulations themselves. This information should allow the simulations to be independently implemented and the results to be independently reproduced.

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