纯仰角目标非线性参数航迹滤波新方法

A New Method for Nonlinear Parametric Trajectory Filtering of Elevations-Only Target

在被动测量的情况下,针对静止单站的纯仰角目标运动分析的问题,提出了一种纯仰角目标的非线性参数航迹的滤波新方法。通过设定目标的飞行模式,分析目标空间位置的三角函数关系,利用纯仰角序列建立起目标的非线性参数航迹,并确定其中的可观测参数。利用总体最小二乘法解算出相应的可观测参数,进而对后续时刻的目标仰角进行递推预测。仿真结果验证了新方法的有效性,对问题的后续解决提供了理论参考和借鉴作用。

Aiming at the analysis of elevations-only target motion under the passive measurement of stationary single station, a novel method for nonlinear parametric trajectory filtering of elevations-only target was designed Firstly, by setting the target flight mode and analyzing the sine law and cosine law of the position of target, the nonlinear parametric trajectory was established and the observable parameters were determined by using elevations-only sequences. Then, these observable parameters were resolved by using total least square algorithm, and the subsequent values of target＇s elevation were predicted out recursively. The simulation results verified the effectiveness of the new algorithm. For the analysis of elevations-only target motion is a new research subject, the proposed method offers a reference for further study.