摘要
常规的单元平均恒虚警(CA-CFAR)和双参量恒虚警(BP-CFAR)检测方法在均匀杂波环境中通常能获得较好的检测性能,但在复杂的杂波背景下,例如当目标邻近大目标时,严重的恒虚警损失会导致目标(特别是小目标)难以检测。基于AIS信息协作感知的AW-CFAR处理方法利用AIS的大目标感知信息,通过设置宽度自适应控制的大目标屏蔽带,有效排除大目标对杂波估计的影响。仿真实验结果表明,相对于传统的CA-CFAR和BP-CFAR,该方法对临近大目标的小目标的检测性能改善了8~20dB。
The detection methods based on conventional cell-averaging constant false alarm rate（CACFAR）and biparametric constant false alarm rate（BP-CFAR）can obtain better detection performance in homogeneous clutter environment.But in the complex clutter background,such as,when a target is close to a large target,a serious constant false alarm loss will make the target（especially a small target）difficult to detect.Therefore,an AW-CFAR processing method based on AIS information cooperative perception is proposed.Making use of the AIS large target perception information,the influence of large targets on clutter estimation is eliminated by setting a large target masking tape with adaptive width control.The simulation results show that the detection performance of the proposed method is 8 dB to 20 dB better than traditional CA-CFAR and BP-CFAR for the small target near the large target.
出处
《雷达科学与技术》
北大核心
2017年第5期519-524,共6页
Radar Science and Technology
基金
国家自然科学基金(No.61231006
61501078)
中央高校基本科研业务费专项基金(No.3132016208)
