A Digital P-Code GPS Receiver Embedded in the AB/APN-217(V)5 Doppler Navigator

Robert Rennard

Abstract:	INTRODUCTION The AN/APN-217(V)5 is an adaptation of the AN/APN-217&3 doppler navigation system (DNS). Both the (V)3 and (V)5 are built by Teledyne Ryan Electronics, the worlds leading manufacturer of doppler radars. The APN- 217 is the Naval standard DNS that has been specified for use on all Navy and Marine Corps rotary wing and vertical lift aircraft. The APN-217 is the primary tactical navigation system in all of these classes of Navy and Marine aircraft, and is a natural candidate for enhancement through the incorporation of GPS navigation capability. The (V)3 is a high performance velocity sensor which has been optimized for over water performance. The (V)5 incorporates a GPS receiver built by Stanford Telecommunications, and modified software to blend the DNS and GPS navigation data. The GPS receiver is a dual channel sequencing receiver capable of operating with either the GPS Standard Positioning Service (SPS) or the Precise Positioning Service (PPS).
Published in:	Proceedings of the 3rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1990) September 19 - 21, 1990 The Broadmoor Hotel Colorado Spring, CO
Pages:	737 - 739
Cite this article:	Rennard, Robert, "A Digital P-Code GPS Receiver Embedded in the AB/APN-217(V)5 Doppler Navigator," Proceedings of the 3rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1990), Colorado Spring, CO, September 1990, pp. 737-739.
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