一种高精度被动地理定位技术研究  

A High-Precision Passive Geolocation Technology

作　　者：崔志新 仇振安 丁涛 沈晓洋 CUI Zhixin;QIU Zhen'an;DING Tao;SHEN Xiaoyang(Harbin Aircraft Industry Group Co.,Ltd.,Harbin 150060,China;Aviation Military Representative Office of Army Armament Department in Luoyang,Luoyang 471000,China;Luoyang Institute of Electro-Optical Equipment,AVIC,Luoyang 471000,China)

机构地区：[1]哈尔滨飞机工业集团有限责任公司,哈尔滨150060 [2]陆装驻洛阳地区航空军事代表室,河南洛阳471000 [3]中国航空工业集团公司洛阳电光设备研究所,河南洛阳471000

出　　处：《电光与控制》2021年第2期100-105,共6页Electronics Optics & Control

摘　　要：提出了一种主要针对地面目标的高精度被动地理定位的方法,该方法结合旋转椭球地球平行面模型与光电探测系统瞄准线地理姿态,推导了目标高精度被动定位解析算法。为提高测量定位精度,通过对地面目标在地球坐标系中的运动建立加速度当前统计模型作为状态方程,利用地面目标被动定位解析结果作为量测方程,应用标准卡尔曼滤波方法进一步提升目标定位精度。该方法计算了地球曲率影响,避免了误差二次放大,算法简单、精度高。相比传统的先估算目标相对距离,再按有准确激光测距值进行定位解算的方法,其定位精度得到了很大提升。This paper proposes a high-precision passive geolocation method aiming at ground targets.This method uses a rotating ellipsoid model parallel to the surface of the earth and the posture angles of the line-of-sight of the photoelectric detector system to deduce the analytical algorithm of the high-precision passive geolocation of ground targets.In order to improve the precision of measurement and positioning,based on the motion of ground targets in the earth coordinate system,a current statistical model of the acceleration is established and taken as the state equation,the solution of passive geolocation of ground targets is taken as the measurement equation,and the method of standard Kalman filtering is used to further improve the target-positioning accuracy.The method calculates the effects of the earth’s curvature and avoids the secondary multiplication of the errors.This algorithm is simple with high precision.Compared with that of the traditional geolocation method,which conducts positioning calculation based on the exact value of laser ranging after estimating the relative distance of the target first,the positioning accuracy of the proposed method is promoted greatly.

关 键 词：被动地理定位 加速度当前统计模型 卡尔曼滤波 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计]