目标屏蔽带自适应调整的CFAR处理器

柳毅; 张淑芳; 索继东

引用本文:	柳毅,张淑芳,索继东. 目标屏蔽带自适应调整的CFAR处理器[J]. 雷达科学与技术, 2017, 15(5): 519-524.[点击复制]
	LIU Yi, ZHANG Sufang, SUO Jidong. CFAR Processor with Adaptive Adjustment of Target Masking Tape[J]. Radar Science and Technology, 2017, 15(5): 519-524.[点击复制]

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目标屏蔽带自适应调整的CFAR处理器
柳毅,张淑芳,索继东
大连海事大学，辽宁大连 116026

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8~20 dB。

关键词: 雷达目标检测自适应恒虚警处理器目标屏蔽感知雷达

DOI：

分类号:

基金项目: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)

CFAR Processor with Adaptive Adjustment of Target Masking Tape

LIU Yi, ZHANG Sufang, SUO Jidong

(Dalian Maritime University, Dalian116026, China)

Abstract:

The detection methods based on conventional cell-averaging constant false alarm rate(CA-CFAR) 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.

Key words: radar target detection adaptive CFAR processor target masking cognitive radar