Integrated GPS Anti-Jam Systems

David Rowe, John Weger and Joel Walker

Abstract:	In the past, high performance Global Positioning System Anti-Jam (GPS AJ) capability was only available in federated systems having substantial size, weight, and power consumption. Those traits are significant cost adders for the total navigation system of a precision guided munition or airborne platform. Rockwell Collins has recently leveraged its experience in GPS receivers and AJ electronics with new technologies to create highly integrated GPS AJ systems that fit within the size and cost constraints of former non-AJ GPS installations. Our company has already built several integrated GPS AJ systems and demonstrated their performance, including at the latest JamFest where greater than 95 dB of AJ performance against multiple broadband jammers was exhibited. Now, the first configuration of an integrated GPS AJ system is being readied for production. This paper will provide an overview of the features and performance of a Rockwell Collins integrated GPS AJ system, and will describe how size, cost, and performance requirements can be satisfied to provide highly reliable navigation on virtually all PGM and airborne applications. This integrated system builds upon the existing Rockwell Collins NavStrike GPS receiver to provide 24 channels of all-in-view dual frequency tracking, and includes over 6,000 correlators to support fast direct-Y code acquisitions with up to 10 ms of time error. This capability is significant because it demonstrates that GPS AJ is now available to applications that previously faced prohibitive size or cost when selecting a navigation system. Small, low cost, integrated GPS AJ systems will become the standard for future military GPS navigation. We will take a closer look at a specific system, the Rockwell Collins Integrated GPS Anti-jamming System (IGAS) that will be in production by the second quarter of 2006. Highlights of the IGAS requirements and capabilities will be reviewed, along with top-level IGAS design details.
Published in:	Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005) September 13 - 16, 2005 Long Beach Convention Center Long Beach, CA
Pages:	1 - 7
Cite this article:	Rowe, David, Weger, John, Walker, Joel, "Integrated GPS Anti-Jam Systems," Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005), Long Beach, CA, September 2005, pp. 1-7.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In