车载光电侦察系统在目标定位过程中, 由于光电平台、惯导系统的工作方式及安装位置差异, 在建立光电平台坐标系、惯导系统坐标系、本地坐标系、地心坐标系、基于参考椭球的经纬度表示等一系列坐标系基础上, 推导出目标定位模型, 计算出目标的经纬度和高程, 实现对目标的精确定位。通过模型对光电侦察系统的主要误差源进行分析和试验仿真, 结果表明该模型能够保证对目标定位精度的要求。外场实验结果表明: 系统目标定位精度优于15 m。

During the process of object positioning, the vehicle electro-optical reconnaissance system needs to establish a series of coordinate systems, such as electro-optical platform coordinate system, inertial guidance coordinate system, local coordinate system, geocentric coordinates and the reference ellipsoid based longitude and latitude representation coordinates. Considering the differences of operation mode and mounting position of electro-optical platform and inertial guidance system, the object position model was derived, the longitude, latitude and height were calculated, and the accurate positioning of object was realized. The main error sources of electro-optical system were analyzed and experimentally simulated through the model, the result shows that the model meets the precision requirement of object positioning. The result of system field test shows that the object positioning accuracy is better than 15 m.