基于非合作目标的运动平台导航误差估计

针对运动平台位置测量通常精度不高的问题,文章基于非合作目标的运动平台导航误差估计方法,将平台的导航误差建立为随时间一阶变化的模型,求解平台的运动参数,并使用线性模型拟合不同目标相对于不同平台的位置测量。通过对比参考平台与其他平台对相同目标运动参数估计的差异,求解平台的导航误差参数,并对平台运动参数进行校正。数值仿真证明了算法的有效性,并分析了测量次数对导航误差估计精度和目标定位精度的影响。

Navigation Error Estimation of Moving Platform Based on Non-Cooperative Targets

In response to the problem of low accuracy in position measurement of motion platforms, a non-cooperative target based navigation error estimation method for motion platforms is studied. The navigation error of the platform is es-tablished as a first-order time-varying model, and the motion parameters of the platform are solved. A linear model is used to fit the position measurement of different targets relative to different platforms. By comparing the differences in estimat-ing the same target motion parameters between the reference platform and other platforms, the navigation error param-eters of the platform are solved, and the platform motion parameters are corrected. Numerical simulations have demon-strated the effectiveness of the algorithm and analyzed the impact of measurement frequency on navigation error estima-tion accuracy and target positioning accuracy.