A system and method for determining the roll rate and roll angle of a spinning platform in a jamming environment, by suppressing the interference signals from the received GPS signals and using the measured phase and amplitude differences between the GPS satellite signals received on two or more antennas....http://www.google.de/patents/US8106811?utm_source=gb-gplus-sharePatent US8106811 - Antijam protected GPS-based measurement of roll rate and roll angle of spinning platforms
