GPS-Denied Navigation Aided by Synthetic Aperture Radar Using the Range-Doppler Algorithm

Abstract The need to successfully navigate in the absence of GNSS has grown recent years. In particular, light aircraft such as UAVs are growing popularity for a variety applications vulnerable GPS denial. research presented here develops GPS-denied navigation scheme employing images formed from synthetic aperture radar system. Past explored utility telemetry systems. This advances previous work by exploiting obtain range and cross-range position measurements. Images using Range-Doppler Algorithm, an efficient image formation algorithm ideal sometimes limited processing packages available aircraft. An inertial system is implemented both real simulated aid estimating aircraft’s state environment. results show that feasible with converging bounded estimation errors.