FlightAware Discussions

OT: GPS explained

Given the relevance of GPS (and other GNSS*) to ADS-B, this may be of interest to anyone wanting to brush up on their understanding of how GNSS really works.

U-Blox GPS-Compendium

*GNSS is a catch-all term that (currently) includes:

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Section 6 is actually very relevant to (Mode S) multilateration - it’s basically the same equations with different unknowns.