地/海面远距离慢速目标单站无源定位技术研究

Research on Single Observer Passive Location Technology of Ground/Offing Remote Slow Targets

在现有单站无源定位方法的基础上 ,介绍了相位差变化率定位法。该方法利用观测平台上两个相互正交的相位干涉仪接收目标辐射电磁波的相位差获取目标的方向信息 ,利用对应的相位差变化率获取目标的径向距离信息 ,从而实现对目标的实时高精度交叉定位。给出了机载观测平台水平直线飞行且无飞行姿态变化条件下的定位表达式。仿真结果表明 ,该方法是一种极具发展前途的单站无源定位方法。

In this paper, the single observer-passive location method of phase difference change rate is introduced based on existing methods. We can obtain the direction of the target with phase difference information of two orthogonal interferometers on the observer and the radial distance with corresponding phase difference change rate information. Then the target can be located quickly and accurately. Some locating expressions are given when the observer is flying along a horizontal beeline without any posture change. Simulations show that this method is effective.