无人机光电设备对地目标单站无源定位方法北大核心CSCD

光电侦察设备已广泛应用于中小型无人机对地侦察,为实现无激光测距信息的无人机光电设备对地目标单站无源定位,提出了基于虚拟椭球的单站无源定位方法,构建了对地目标单站无源定位模型。利用空间射线与虚拟椭球交汇原理,通过等效方位角和等效俯仰角解算、目标高度估计和目标定位解算等步骤,实时获取目标的大地坐标。仿真结果表明,高度估计误差低于500 m条件下,单站无源定位方法可实现经纬度定位精度为10?3°、高度定位精度为150 m的三维目标定位,可实现高于50%置信度的优于10%R无源定位精度的相对定位。

Method of single-station passive location to ground target by UAV photoelectric equipment

The photoelectric reconnaissance equipment is widely applied in ground target reconnaissance of small and medium-sized UAV. In order to realize the single-station passive location to ground target by UAV photoelectric equipment without the laser ranging information, the method of single-station passive location based on the virtual ellipsoid was proposed, and the model of single-station passive location to ground target was constructed. In the principle of intersection of space rays and virtual ellipsoid, the geodetic coordinates of the targets were obtained in real time by resolving the equivalent azimuth and pitch, estimating the target altitude and resolving the target location. The simulation results show that, under the condition that the altitude estimate error is less than 500 m, the method of single-station passive location can realize the three-dimensional target location with the location accuracy of longitude and latitude of 10?3 ° and the altitude location accuracy of 150 m, the relative location with higher than 50% degree of confidence and better than 10% R passive location accuracy can be realized.