Feed-forward Compensation Algorithm for Line of Sight Drift of Photoelectric Stabilized Platform
To solve the problem that the component of the earth's rotational angular velocity on the pitch axis of the photoelectric pod affects the imaging quality of lidar in the image stabilization mode,a feed-forward compensation algorithm based on the airborne inertial guidance system is proposed,which calculates the compensation amount through the rotation matrix according to the attitude information,latitude information and equipment axis angle information of the aircraft and feeds forward it into the speed loop to compensate for the line of sight drift for the photoelectric stabilized platform.The simulation and experimental verification of the proposed algorithm are carried out,and the experimental results show that when the pitch axis is facing south-north,the pitch angle drift within half an hour after the introduction of the compensation algorithm is 0.231°,which is less than 6.005° without the compensation method.When the pitch axis is facing north-south,the pitch drift within half an hour after the introduction of the compensation algorithm is-0.385°,which is less than-5.372° without the compensation method,which proves that the algorithm can effectively compensate for the pitch position drift in the image stabilization mode.
airborne optoelectronic podline of sight driftrotation matrixfeed-forward compensation
国家科技期刊平台
NSTL
万方数据
维普
