Rolling Angle Estimation Method for GNSS/SINS Integrated Navigation System Based on Least Square Method

摘要

Rotating missiles using the GNSS/SINS integrated navigation system are overloaded during launch and require powering up after launch. Therefore, it is necessary to achieve inflight alignment under high dynamic conditions. With this background, as the key technology of inflight alignment, the measurement method of roll angle has been paid more and more attention by researchers. In this paper, the roll angle estimation method of GNSS/SINS integrated navigation system based on least square method is studied. First, the principle and calculation process of this method are deduced in detail. Then it was simulated and analyzed according to the ballistic characteristics. Finally, a semi-physical simulation was performed using a turntable. The results show that this method is simple, high accuracy, good in real-time ability and has a high application value.