机载雷达目标跟踪与航迹信息提取

Target Tracking and Track Information Extraction of Airborne Radar

针对机动目标跟踪中航迹信息提取精度不高的问题,提出一种ECEF坐标系下基于交互多模型的多机协同跟踪算法。首先,各载机以ECEF坐标系为融合中心对目标量测进行无偏转换处理,以有效减小量测转换误差对目标跟踪的影响;然后,利用交互多模型的方法对目标进行融合跟踪,以进一步提高目标机动时的跟踪精度;最后,通过二次滤波的方法,来有效实现目标航迹信息的精确提取。仿真结果表明,该算法可较好地提高目标机动时的跟踪精度和航迹信息提取精度。

To improve the track information extraction precision of maneuvering target, a multi-plane cooperative tracking algorithm was proposed based on IMM in the ECEF coordinate. For this method, unbiased transformation was used to reduced the influence of measurement errors in the ECEF coordinate firstly. Then the IMM was further used to improve the maneuvering target tracking precision. Finally, track information extraction precision was effectively improved by using the second filter. Simulation results showed that target tracking and track information extraction could be finished effectively by using the proposed method.