基于假设检验的天基仅测角目标定位方法

Space-based Bearing-only Target Location Method Based on Hypothesis Testing

针对天基仅测角卫星对非合作目标的定位问题,提出了一种基于假设检验的方法。在方位角观测不满秩,而无法满足可观性条件时,通过假设目标的飞行高度,给出多种可能的目标航迹。对目标的型号进行识别,并将已有的先验信息作为假设航迹的置信度评判标准,拒绝概率低的假设,缩小目标的飞行高度范围,提高目标的定位精度。经过仿真验证可知,对目标的高度进行估计,其误差区间可缩小50%以上,验证了所提方法在多源信息融合中的潜力。

In this paper,ahypothesis testing method is proposed for the localization of non-cooperative targets by space-basedbearing-onlysatellites.When the observation of the azimuth angle is not satisfactory and the observability condition cannot be satisfied,multiple possible target trajectories are given by assuming the flight altitude of the target.The target model is identified,and the existing prior information is used as the confidence evaluation standard of the hypothetical track.The hypothesis with low probability is rejected,the flight altitude range of the target is narrowed,and the localization accuracy of the target is improved.The simulation results show that the error interval of the target height estimation can be reduced by more than 50%,which verifies the potential of the proposed method in multi-source information fusion.