The ability of GPS to counter electronic attack (jamming) and unintentional interfering signals is critical to the success of future military operations, and many activities of civilian life. Innovative testing approaches and well-equipped, affordable simulation and test facilities are required to analyze the effects of jamming/interference on GPS and to evaluate anti-jam techniques, such as adaptive antennas. This capability is essential for developing ECCMs against jamming and devising effective ECMs against enemy GPS systems. The objectives of this research are twofold: (1) to upgrade the capabilities of the AFRL EW Anechoic Chamber (EWAC) infrastructure for conducting tests of GPS systems in realistic jamming environments, and (2) to perform the evaluation and analysis of GPS ECM/ECCM techniques. This proposed Phase I will be an assessment of EWAC capabilities, test plans and procedures, and a facility upgrade design including the simulation hardware/software, instrumentation, and chamber modifications needed to meet GPS ECM/ECCM testing requirements. The requirements of the GPS Joint Program Office (JPO) for the "GPS Antenna Systems Test Infrastructure" will be used for guidance on this program.
Benefits: This facility will provide a test environment at an affordable cost to evaluate GPS ECM/ECCM concepts and products developed by private sector and military. Provides essential element of test process, whereby GPS systems can be stimulated with multiple, radiated signals in controlled environment. Commercial value is enhanced by the tremendous growth in military/commercial GPS applications and their increasing vulnerability to jamming and unintentional interference.
