The novel method with sequence SAR imagery for INS/SAR Integrated Navigation System

In recent years we are interested in inertial navigation system/ synthetic aperture radar(INS/SAR) Integrated Navigation without GPS or BDS, and the INS/SAR integrated navigation system which possesses the highly autonomy and high performance will be the most appropriate system. In traditional integrated navigation system, the SAR only provide position information one time based on high-precision SIFT feature scene matching, so the position errors from SAR affect immensely the navigation precision. This paper will research pertinently on how to make full use of the sequence SAR imaging to realize the precise correction of the inertia error in the airborne application environments. After the simulation, navigation information does not appear to diverge in the system, and the absolution value of the position error is less then 9.8m, height error is less than 13.5m, heading error is less than 0.1°, and velocity error is less than 0.05m/s. The simulation results show our proposed method can effectively improve the accuracy of INS/SAR integrated navigation system.