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《Electronics Optics & Control》 2013-02
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A Target Tracking Algorithm that Reduces Laser Designation Time

CHEN Liangliang1, WANG Jiangang1, LI Xiaojun2, ZHAO Zhenyu1(1.Science and Technology on Electro-Optic Control Laboratory,Luoyang 471009,China; 2.PLA Navy Armament Department,Beijing 100841,China)  
A new approach that minimizes the total active laser target designation time is proposed for guidance of laser guided weapons.The laser guided weapons can make full use of INS/GPS guidance,and estimate the error of the weapon-to-target vector by covariance information within a Kalman filtering.At any time,the missile needs to be sure that it can navigate to any point within the area around the target that is described by this covariance.Therefore,at each moment during the flight,there exists a covariance threshold above which the weapon cannot guarantee its ability to navigate to the target.In our proposed approach,when the threshold is exceeded,the weapon requests a brief laser designation of the target.The laser designation provides an accurate measurement of the bearing of the target with respect to the missile,and this is used to improve the estimation of the weapon-to-target vector.In turn,this can be fed back into the Kalman filter to improve the internal state estimation.The approach can minimite the laser designation time while guaranteeing the attacking precision.
【Fund】: 航空科学基金(2010ZC13012);; 总装重点实验室基金项目
【CateGory Index】: TJ95
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