中文摘要：

针对超视距雷达（OTHR）海杂波环境下的目标检测问题,提出了一种基于贝叶斯滤波和VTA的检测前跟踪算法。将雷达回波信号进行距离、方位维处理后,即在多普勒级进行信号处理。对每一个距离、方位单元,利用临近单元信号构建白化滤波器对信号进行预白化处理,采用贝叶斯滤波方法构造各个检测单元目标存在的广义似然比,即路径积分矩阵的各元素。采用Viterbi算法进行检测跟踪,在输出检测结果的同时给出目标航迹。仿真结果表明,该算法可以有效地解决跨单元问题,检测到目标。

英文摘要：

A track-before-detect algorithm based on viterbi-like tracking algorithm is proposed with respect to the surface ship detection and tracking of weak targets for over-the-horizon radar.The echoes are processed in pulse compression and beam forming,with signal process is on doppler domain.For each range and azimuth cell,using adjacent cell′s signal construct whitener for filtering the sea clutter.Then establish the generalized likelihood ratio of each cell by Bayesian estimation,as each element of matrix P.Finally,through the viterbi-like tracking algorithm,declare the detection result and output flight-path in the meantime.Simulation results show that this algorithm has effective detection of target exceed cell.