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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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Potential future evolutions of this SSV booklet

To promote the multi-GNSS SSV for the purpose of safe robotic or manned missions in SSV as defined in this booklet and beyond including cislunar space it will be necessary to update this booklet, extend efforts on simulation and modelling as well as elaborating further on recommendations for GNSS providers. Some potential evolutions of the booklet could include:

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