基于实时预测轨迹修正的共轴跟踪观测方法

On-Axis-Track Method Based on Real-Time Predicted Trajectory Correction

针对光电设备跟踪观测轨迹可预测目标，提出并实现了基于实时预测轨迹修正的新型跟踪算法。从电视观测信息中实时解算出轨迹偏差的位置分量与速度分量并修正预测轨迹，引导仪器运动。应用该方法，在被观测目标电视探测不理想时有效提高了跟踪可靠性，降低了光电跟踪设备对电视探测能力的苛刻要求。即使电视探测短时出现困难，也能保证一定精度。本文给出了实时轨迹修正跟踪方法的构成原理与试验结果，并与一般电视跟踪方法进行了对比。

This paper proposes and implements a new tracking algorithm based on reahime trajectory correction for photoelectric equipment to track and observe targets with observable trajectory. Position components and range rate components are solved from CCD information in realtime for resolving of the trajectory, and correction is made on the predicted trajectory to guide gimbal of the equipment. This method improves the reliability in tracking dim targets while lowering requirements for the detective ability of a CCD system. It assures accuracy even when CCD systems can hardly detect targets for a short time. The paper also introduces the principle of the reahime trajectory correction method in photoelectric tracking system as well as the test results. At the same time, comparisons are given between this method and common CCD tracking methods.