The STR4500 is a 12 channel L1 C/A code GPS/SBAS signal generator. It has been designed as precision general purpose equipment for testing and evaluating GPS/SBAS receiver equipment in a development,qualification, certification or integration environment.
When operated with SimPLEX software the comprehensive nature of the product ensures that user equipment under test behaves as if it were receiving RF signals from real satellites when installed on a vehicle performing complex and/or high speed manoeuvres.
It is now obsolete having been replaced by the GSS6700 (which added full multi-GNSS capability with the addition of GLONASS and Galileo).