6 in March 1996, and culminated with the elimination of selective availability
in May 2000.
Research was conducted with and without selective availability
Under the contract, Trimble will incorporate Selective Availability
Anti-Spoofing Module (SAASM) capability into its TASMAN(TM) ARINC-12 (TA-12) Global Positioning System (GPS) navigation receiver and maintain Federal Aviation Administration (FAA) approval to Technical Standard Order (TSO) C-129a.
This so-called Selective Availability
(SA) could be filtered from the signal for authorized users to provide full accuracy.
In addition, the impact of setting Selective Availability
(SA) to zero within the next 10 years is addressed from the perspective of its impact on both L5 and DGPS.
Manufacturers of GPS-based navigational aids, however, maintain that so-called Selective Availability
civil devices cannot be adapted to guide weapons.
After several brief experimental periods, the Defense Department activated its data-degrading system, called selective availability
(SA), on a full-time basis in March.
The Trimble M7 GPS-S is a Selective Availability
Anti-Spoofing Module (SAASM) compliant GPS system with Global Navigation Satellite System (GNSS) capability.
But the Polaris devices do not have the military encryption known as the Selective Availability
Anti-Spoofing Module technology allows the DAGR to function much more effectively in an electronic warfare environment than its predecessor, the Precision Lightweight GPS Receiver, and much better than current commercial GPS receivers.
Both missiles were equipped with the Interstate Electronics (L-3 Communications subsidiary) Selective Availability
Anti-Spoofing Module (Sassm)-based GPS TruTrak receiver, which provides precise measurement to the onboard computer, even in a hostile jamming environment.