基于Hough变换的低可观测海面运动目标检测

Detection of lowlying sea surface moving target via Hough transform

针对一般信号检测方法无法检测低可观海面运动目标的问题,提出了运用Hough变换方法对海杂波背景下运动目标进行检测的方法。首先,用无记忆非线性变换法模拟海杂波,在此基础上模拟海面微弱运动目标的雷达回波;然后通过Hough变换对模拟所得的雷达回波数据进行处理;并根据处理结果进行了检测目标。另外用蒙特卡罗方法对Hough变换目标检测进行仿真,讨论了检测概率与雷达回波信噪比(SNR)及其它一些参量的关系。仿真结果证明了用Hough变换方法进行目标检测的可行性。

Because the ordinary detection technology can not recognize the sea surface moving target of low observation, the low velocity target detection technology under the sea clutter via Hough transform is presented. Firstly the sea clutter is simulated by the method of ZMNL, the simulative radar data of sea surface moving target is got using these sea clutter, then the simulative radar data are processed via Hough transform and the detection results are got. Finally, the algorithm of target detection via Hough transform is simulated by Monte Carlo method, and some factors that affect the capability of target detection are introduced. The simulative results show that these detection algorithms are effective.