GEM V: A MOD SEM-E GRAM SAASM Receiver From Rockwell Collins

Bruce McCullough and Brent Disselkoen

Abstract:	Rockwell Collins is now offering the GEM V receiver to meet both the SAASM mandate and the GPS Joint Program Office (JPO) GRAM initiative. As part of the long GEM legacy, the GEM V retains the Mod SEM-E form factor and connector, and provides the robust All-in-View and DO-229 FDE RAIM capabilities of the GEM IV. Instead of the standard GEM III/IV ICD-GEM-DPRAM interface, the GEM V will support the GRAM interface, which is the standard JPO interface for airborne receivers. In addition, the GEM V employs the Rockwell Collins KDP II-based SAASM 3.0 that is BDR approved. The GEM V receiver is a straightforward replacement for existing GEM III/IV integrations. Rockwell Collins will continue to provide high quality PVT performance and functionality across all the GEM designs. Even though the GEM V interface has changed to a GRAM format, the GEM V still provides host control and status information equivalent to, or better than, the GEM III/IV receivers. With the incorporation of the SAASM architecture, Rockwell Collins provides an unclassified Line-of-Sight (LOS) measurement interface (U.S. Patent Number 6,018,314). In addition, the Rockwell Collins SAASM 3.0 design is a low-risk technology insertion because the design essentially repackages current signal processing ASICs in a NSA approved package, and has received GPS JPO BDR approval.
Published in:	Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000) September 19 - 22, 2000 Salt Palace Convention Center Salt Lake City, UT
Pages:	363 - 365
Cite this article:	McCullough, Bruce, Disselkoen, Brent, "GEM V: A MOD SEM-E GRAM SAASM Receiver From Rockwell Collins," Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000), Salt Lake City, UT, September 2000, pp. 363-365.
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