Improving seeking precision by utilizing ghost imaging in a semi-active quadrant detection seeker

作     者：Siyuan WANG Lijing LI Wen CHEN Mingjie SUN Siyuan WANG;Lijing LI;Wen CHEN;Mingjie SUN

作者机构：Department of Opto-electronic EngineeringBeihang UniversityBeijing 100083China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2021年第34卷第12期

页      面：171-176页

核心收录：

学科分类：08[工学] 081105[工学-导航、制导与控制] 0804[工学-仪器科学与技术] 0811[工学-控制科学与工程] 

基　　金：co-supported by National Natural Science Foundation of China(Nos.61922011 and 61675016) the Fundamental Research Funds for the Central Universities 

主　　题：Digital micro-mirror device Ghost imaging Guidance system Image acquisition Semi-active laser seeker 

摘      要：Conventional semi-active laser guidance takes advantage of the laser designator to illuminate the stable and uniform laser spot on target *** seeker collects the reflected light by a quadrant detector and outputs the relative position information to guide the missile to the illuminating laser ***,the designation and guidance accuracy could be jeopardized by the randomly drifting of laser spot caused by the instability of designation platform and air *** this work,ghost imaging technique is adapted to a quadrant detector semi-active seeker by utilizing structured illumination on the *** a series of structured illumination masks,the signals from the quadrant detector are multiplexed to perform calculation of the target relative position as well as image reconstruction of the illuminated area *** target recognition methods could be further applied to the reconstructed image to calculate the designating error and correct the *** results of simulation and experiment demonstrate that the proposed method could improve the guidance accuracy in many circumstances which would lead to attacking deviation if conventional semi-active laser guidance is used.