each of a first and a second navigation satellite system are adapted to operate according to a first and a second specification , respectively , and each includes a first and a second plurality of satellite vehicles , respectively . each of the first and the second plurality of svs are adapted to be identified by a first and a second plurality of unique corresponding identifications , respectively . a processor is 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 . the processor is 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 . the processor is 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 .