Target Confirmation Method Based on Line of Sight Vector Sequence

Aiming at the serious image distortion of elliptical orbit infrared surveillance system and the low precision of target confirmation algorithm based on image registration, a novel target confirmation method based on line of sight (LOS) vector sequence is proposed. By establishing the state transition model and observation model of target LOS vector sequence, the GM-PHD filter is used to filter LOS vector sequence data and confirm target. Owing to that the GM-PHD filter will lose the new target when its states are unknown, the feedback GM-PHD filter is proposed. The simulation results verify the effectiveness of the proposed method based on LOS vector sequence and the timeliness of the improved GM-PHD feedback filter for new target states estimation.