机载吊舱目标定位解算及误差分析

Target Positioning Solution and Error Analysis of Airborne Pod

根据机载吊舱系统平台的一致特性,采用建立多空间坐标系,如大地、飞机、吊舱坐标系的方法,结合坐标变换,给出了吊舱画面中目标的定位解算方法。同时将激光光轴与相机光轴误差也融入到计算中,使得误差模型更为具体并与实际相接近。通过实验仿真进行定位实验,分析了飞行中各因素对定精度的影响,为提升目标定位精度所需做的具体改进方向给出了具体指导。

According to the consistent characteristics of the airborne pod system platform, the method of establishing multi space coordinate systems, such as earth, aircraft and pod coordinate systems, combined with coordinate transformation, is used to give the positioning solution of the target in the pod screen. At the same time, the errors of laser axis and camera axis are also incorporated into the calculation, making the error model more specific and close to the actual. The positioning experiment is carried out through experimental simulation, and the influence of various factors in flight on the positioning accuracy is analyzed, which provides specific guidance for improving the target positioning accuracy.