中文说明： 该源代码适用于双基阵观测目标，并根据目标观测方位变化，对目标进行运动分析，并通过扩展卡尔曼滤波实现目标方位、距离、速度以及航向等预测。 并通过均方根误差统计，估计其误差范围
English Description：
The source code is suitable for dual array observation target, and according to the change of target observation azimuth, the target motion analysis is carried out, and the target azimuth, distance, speed and heading are predicted by extended Kalman filter.