弹道导弹的雷达测轨算法

研究了弹道导弹的雷达轨道估计问题。为了解决雷达探测距离远、角度误差大、椭圆轨道计算量大和目标运动轨迹摄动大等恶劣条件下的测轨预报,并且能充分利用雷达测量误差分布的方向性以提高算法的精度和自适应能力,本文提出了机动检测多模型的目标状态估计器的预处理—给定两个时刻目标位置的轨道参数初算—多目标位置状态参数下的最小方差估计的目标轨道最优估计方法。通过对某型号防空导弹的制导控制系统仿真,可以看出该雷达目标测轨算法使其控制系统有很好的中末制导交接条件。

The Trajectory Measuring of Ballistic Missile with Radar

In this paper the orbit determination of ballistic missile with the radar is discussed for the defense system of missile, which faces the severe and difficult conditions such as far detection range, large angle error and generous calculating of elliptical orbit. In order to improve the adaptation property of the system by making the best of the direction of distribution of radar measurement errors, an optimum estimation algorithm for Kepler orbit is proposed, which yields a minimum variance estimation of the Kepler orbit with multi-spatio-temporal state based on both the preprocessing of the multiple model estimator with maneuver detecting and the determining of initial value parameter with two spatio-temporal state. Simulation of one missile control and guide system shows that the proposed estimating method provides a good interface condition between midcourse guidance and terminal guidance.