The concept of generalized cooperative target and error space estimation method are proposed to improve the tracking accuracy and stability of optoelectronic tracking system. This method uses guidance data and guidance error to describe the motion of the target. By dispersing the maneuver of the target into guidance data and guidance error, filtering is performed in the target state space according to the target motion model, filtering and predicting are performed in the error space according to the guidance error model, and then synthesizing to obtain the target position prediction data. Experimental results show that under the same maneuver level, the tracking performance of this method is better than that of Kalman filtering and strong tracking filtering. To improve tracking accuracy and stability of optic-electronic target tracking system, the conception of generalized synergic target and an algorithm named error-space estimation method are presented. In this algorithm, the motion of target is described by leading data and leading errors, then maneuver of target is separated into leading data and leading errors to reduce maneuver level. The prediction data of target position are acquired by synthesizing the filtering data from target state-space according to kinematics model and the prediction data from error-space according to leading error model. Differing from typical multi-model method, the kinematics model and leading error model work concurrently rather than switch between models. Experiment results show that the performance of the algorithm is better than Kalman filter and strong tracking filter at the same maneuver level.
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