Non-beam-steering Global Positioning System (GPS) Anti-jam Solution with Minimized Pseudo-range Errors

Military GPS receivers have to operate in electromagnetically challenged environments. CRPAs have become the antennas of choice for electronic protection to GPS receivers. For optimum performance and precision navigation, CRPA weights are adapted using beam forming/null steering approaches. Due to the limits on size, weight and power (SWAP), one may not be able to use beam forming/ null steering algorithms on small platforms. Under the proposed research effort, we will develop, implement and test AJ technology that will be applicable to aviation GPS receivers mounted on small platforms. The AJ technology will use non-beamforming algorithms for adapting antenna weights while maintaining the high precision requirements. The technology will be capable of being used with existing GPS antenna systems and GPS receivers, and will also support improved performance requirements in aviation GPS receivers.