Patent ID: 7768449

Claim:
A communication system comprising: a first global navigation satellite system (GNSS), adapted to operate according to a first specification, and including a first plurality of satellite vehicles (SV), wherein the first plurality of SVs are adapted to be identified by a first plurality of unique corresponding identifications (IDs); and a second GNSS, different from the first GNSS, adapted to operate according to a second specification, different from the first specification, and including a second plurality of SVs, different from the first plurality of SVs, wherein the second plurality of SVs are adapted to be identified by a second plurality of unique corresponding identifications (IDs), different from the first plurality of unique corresponding IDs; a processor adapted to receive and identify a first plurality of corresponding signals transmitted from the first plurality of SVs in response to the first plurality of unique corresponding IDs, adapted to receive and identify a second plurality of corresponding signals transmitted from the second plurality of SVs in response to the second plurality of unique corresponding IDs, and adapted to determine position location information in response to receiving and identifying the first plurality of corresponding signals and the second plurality of corresponding signals.