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针对传统算法不能对临近空间高超声速目标进行有效航迹起始的问题,提出了一种基于改进Hough变换的快速航迹起始方法。量测数据经过Hough变换后,首先提取出参数空间中超过阀值的峰值点,形成备选积累单元位置矩阵,然后将备选积累单元位置矩阵中各列元素与本列各元素相减,并将超过距离偏差和角度偏差的点剔除,得到差值单元位置矩阵,最后对差值单元位置矩阵对应参数空间的所有点求均值,将均值作为曲线在参数空间的交点起始目标航迹。Mont Carlo仿真表明,新方法能够实现对多批临近空间高超声速目标的航迹起始,有效解决了航迹簇拥问题,具有一定工程实践意义。
Aiming at the problem that the traditional algorithm can not initiate the effective track initiation for near-space hypersonic targets, a fast track initiation method based on improved Hough transform is proposed. After the Hough transform of the measured data, the peak points above the threshold in the parameter space are firstly extracted to form the candidate accumulating unit position matrix, and then the elements in the accumulating unit position matrix are subtracted from the elements in this column Finally, the average value of all the points in the parameter space corresponding to the location matrix of the difference unit is averaged, and the average is taken as the target track at the intersection point of the parameter space in the mean. The simulation of Mont Carlo shows that the new method can achieve the starting of multiple tracks of hypersonic targets near space and effectively solve the problem of track clustering, which is of practical engineering significance.