基于投票分布积累的Hough变换航迹起始法?

针对密集杂波下匀加速运动的低可观测目标的航迹起始问题，提出了一种基于投票分布积累的Hough变换航迹起始法。该方法利用单元投票数以及该单元附近投票数的密集程度定义了投票密度和投票均值，构造了两级门限来滤除部分杂波，快速给出目标航迹参数在参数空间的大概位置，最后由直观法给出起始航迹的数目以及参数。仿真结果表明，该方法不仅能提高正确航迹起始概率、降低错误起始概率，而且所用时间短，尤其适用于复杂环境中的目标检测。

Hough Transform Track Initiation Based on Vote Distribution Accumulation Method

In order to solve the problem of the Track Initiation of dim target with constant acceleration under the condition of heavy clutter, a Hough Transform track initiation algorithm based on vote distribution accumulation method was proposed in this paper. In this algorithm, the vote density and the mean?vote are defined first using the vote number of the cell and the transformed values of the cell votes and its neighbor votes simultaneously;then two?hierarchical thresholds were constructed according to the two definitions which are used to filter clutter, and the probable locations of the true parameters in the pa?rameter space were obtained. Finally, the track number and parameters were given by object method. Simulation results show that this algorithm can keep higher true track initiation probability but lower false track initiation probability, moreover, the time is shorter, especially in complex environment.