Ground Based GPS Receiver Applications Module
120,000 fielded 2004-2015; still in production
The GB-GRAM is an open architecture specification that defines non-proprietary functional, performance, and interface requirements for a family of secure embeddable GPS receivers. GB-GRAM embedded GPS receivers are capable of processing the Precise Positioning Service (PPS) signal to provide highly accurate, real-time, PNT information 24-hours a day under all weather conditions.
The GB-GRAM specification (MIL-PRF-GB-GRAM-300) defines requirements that target the ground domain. The current production version of GB-GRAM is provided in the Small Serial Interface (SSI) form factor. This product, delivered under the GB-GRAM contract, is the Miniature Precision Lightweight GPS Receiver (PLGR) Engine- Selective Availability Anti-Spoofing Module (SAASM) (MPE-STM). The MPE-STM). er>TM). is an embeddable lightweight “All in View”, dual-frequency, continuously tracking GPS receiver that uses the SAASM to access the PPS signal. The functions and capabilities of the SSI-GB-GRAM are tailored to suit the operational requirements of ground-based platforms with low-dynamic characteristics including mounted and dismounted land users and waterborne vehicles. SSI-GB-GRAM can be integrated into a wide variety of command, control, communications, and computer systems to host system functions including position location, target location, time synchronization, rendezvous, and en-route and terminal navigation.p>