An augmentation system uses earth stations that have been carefully surveyed, and their locations are known with great precision. As they receive signals from the GPS satellites, they are compared ...

The Space Force wants its next fleet of GPS satellites to be smaller ... of manipulating GPS data to confuse a receiver about its location. This can be done using relatively cheap software ...

Satellite telemetry may also help answer ... However, biotelemetry does not usually provide information on an animal's location. Combining GPS and biotelemetry systems can link spatial and ...