The GSS6400 complements Spirent’s established range of navigation and positioning simulation systems. While simulators generate the specific controlled signals which are needed to develop and test the performance of navigation and positioning systems, the GSS6400 captures the full “richness” of the real world environment which can then be replayed in the lab. The captured data includes real world fades, multipath and in-band interference as well as direct signals from GNSS satellites. 
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