基于小波变换和灰色关联度的航迹关联算法

超视距雷达和红外预警卫星能对弹道导弹助推段进行探测跟踪，因此两者的情报可以相互关联印证，从而提高情报质量。针对超视距雷达和红外预警卫星的航迹关联问题，提出了一种基于小波变换的灰色关联度的航迹关联方法。该算法将超视距雷达和红外预警卫星的方位角信息序列通过小波变换进行去噪，得到方位角航迹的整体走势，然后对走势相同的方位角航迹建立灰色关联矩阵，并根据该矩阵按照一定的规则进行航迹相关判定。仿真结果表明，相对灰色关联度的关联算法，该算法的正确关联率提高了约8%。

Algorithm of track correlation based on Wavelet transform and grey correlation degree

Both the over-the-horizon radar and infrared early-warning satellite can detect and track the ballistic missile during the boost phase. Therefore, the intelligences out of them both can be correlated and confirmed mutually, thus improving the intelligence quality. Concerning for the track correlation of the over-the-horizon radar and infrared early-warning satellite, this paper proposes a method of track correlation using the grey correlation degree based on Wavelet transform. This proposed algorithm makes de-noising of the azimuth information sequence of the over-the-horizon radar and infrared early-warning satellite through Wavelet transform, obtains the overall trends of azimuth track, then sets up a grey correlation matrix for those azimuth track with the same trends, and finally, makes decision of track correlation according to a certain riles by this matrix. Simulation results show that the correct correlation rate using this algorithm can be improved approximately by 8%, with respect to the correlation algorithm with grey correlation degree.