A Better Way of Life for PPS Users...GPS SAASM and P(Y)-Direct, the New Wave of Military Receiver Technology for the PPS Navigation and Time and Frequency User

H. Fruehauf

Abstract:	This paper discusses the new GPS receiver technology being introduced to all U.S. Military Services and U.S. allies, now using standard PPS receivers. The new receivers implement two very distinct, yet highly synergistic characteristics: the ability to acquire the P(Y) code direct, without the use of the C/A-cook signal, and the new security architecture called SAASM (Selective Availability Anti-Spoof Module). In this paper, the focus is on the Direct P(u) fir the crypto-keyed receiver and the precision time and frequency applications that can take advantage of this new capability. Also included in the discussion is the figure of the Selective Availability (SA) signal degradation and the overall scenarios of civil and military GPS signal availability.
Published in:	Proceedings of the 31th Annual Precise Time and Time Interval Systems and Applications Meeting December 7 - 9, 1999 Marriott's Laguna Cliffs Resort Dana Point, California
Pages:	347 - 356
Cite this article:	Fruehauf, H., "A Better Way of Life for PPS Users...GPS SAASM and P(Y)-Direct, the New Wave of Military Receiver Technology for the PPS Navigation and Time and Frequency User," Proceedings of the 31th Annual Precise Time and Time Interval Systems and Applications Meeting, Dana Point, California, December 1999, pp. 347-356.
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