An Autonomous Navigation Method with InSAR-Aided INS

Abstract

The existing navigation systems have lots of shortcomings, the lack of cross-line resolution lead to the low precision of terrain-aided navigation(TAN) systems. Satellite signals access is necessary for Global Navigation Satellite System (GNSS). Scene matching-based navigation systems require optical image matching, without all-day or all-weather features, and these navigation systems are also affected by seasonal changes. Synthetic aperture radar (SAR) systems cannot inverse platform attitude without three-dimensional localization. Combined with the TAN and scene matching-based navigation systems, a method of InSAR/INS-integrated navigation system based on the interferograms matching is proposed to solve the above problems. The proposed method will employ fundamental interferograms characteristics, which are sensitive to terrain and platform attitude, to provide highprecision navigation. InSAR/INS-integrated navigation system is an autonomous navigation system with high accuracy, and the efficiency, robustness, and reliability of this system are improved compared to the traditional navigation systems.