CAJ | 학술논문

针对干扰背景下机载雷达多通道检测问题，提出了一步广义似然比检测器（1 S-GLRT）和两步GLRT（2 S-GLRT）。分析了两种检测器的物理意义，证明了二者均具有恒虚警（CFAR）特性，并给出了检测器的工作流程。在性能评估阶段，通过计算机仿真验证了两种检测器均能有效的抑制干扰并实现目标检测。并且通过不同的参数设置分析了两种检测器的性能差别。结果表明：在低信杂噪比下，1 S-GLRT的检测概率比2 S-GLRT的略高，当 SCNR较高时，二者的检测概率基本相同。但2 S-GLRT的计算复杂度要低。
침대간우배경하궤재뢰체다통도검측문제，제출료일보엄의사연비검측기（1 S-GLRT）화량보GLRT（2 S-GLRT）。분석료량충검측기적물리의의，증명료이자균구유항허경（CFAR）특성，병급출료검측기적공작류정。재성능평고계단，통과계산궤방진험증료량충검측기균능유효적억제간우병실현목표검측。병차통과불동적삼수설치분석료량충검측기적성능차별。결과표명：재저신잡조비하，1 S-GLRT적검측개솔비2 S-GLRT적략고，당 SCNR교고시，이자적검측개솔기본상동。단2 S-GLRT적계산복잡도요저。
For the problem of multichannel airborne radar detection in the presence of jamming,we pro-pose one-step generalized likelihood ratio test(1S-GLRT)and two-step GLRT(2S-GLRT).Moreover,we show the physical meanings of these two detectors,prove the constant false alarm rate(CFAR)property,and present the workflow diagram.At the stage of performance evaluation,by computer simulations,we demon-strate that the two detectors are effective in jamming suppression and target detection.Through different pa-rameter settings,we show the differences between the two detectors.It is found that when the signal-to-clut-ter-plus-noise ratio(SCNR)is low,the probability of detection(PD)of the 1S-GLRT is slightly higher than that of the 2S-GLRT.However,when the SCNR is higher,they have nearly the same PD.In addition,the 2S-GLRT has lower computation complexity.