发射点定位误差对飞行器轨道融合解算精度的影响

Influence of Launching Origin Location Error on Precision of Aerocraft Orbit Solving

在靶场试验中,发射原点初始状态(位置、发射方位角等)准确与否非常重要。依据轨道数据处理的流程,在理论上给出了发射原点误差对非线性融合方法解算外测轨道的影响。建立了发射原点不准对于发射坐标系与测量坐标转换的关系;并利用非线性融合算法,研究了发射原点的误差对轨道参数的影响。仿真计算结果表明,发射原点误差对于飞行器精度分析与精度鉴定有较大影响,需要重点考虑。

The precision of the initial parameters of the launching origin, such as the position and the launching azimuth, is verv crucial in the range test. According to the procedure of orbit data processing, the relation between launching origin error and the transition from launching coordinate to measuring coordinate has been analyzed. Using nonlinear combined algorithm, this paper has theoretically discussed the influence of the launching origin error on orbit tracking data solving. And simulations have demonstrated that the launching origin error has rather serious influence on the precision analysis and appraisal of aerocraft, which should be seriously considered.