CAJ | 학술논문

针对宽带雷达多次回波间的距离单元走动问题,提出了一种对高分辨距离像数据进行目标检测的新算法.先用约束平移时延量的包络对齐法对各次回波进行对齐,再用窗函数估计目标的长度和位置,最后采用双迭代法对目标的导向矢量进行估计,得到最终的检测算子,并简要证明了该算法具有全局渐进收敛和恒虚警率的特性.两类飞机实测数据的实验结果表明,与基于散射点密度的广义似然比检测算法相比,当检测概率为80%时,本算法至少有1.4dB的改善.
침대관대뢰체다차회파간적거리단원주동문제,제출료일충대고분변거리상수거진행목표검측적신산법.선용약속평이시연량적포락대제법대각차회파진행대제,재용창함수고계목표적장도화위치,최후채용쌍질대법대목표적도향시량진행고계,득도최종적검측산자,병간요증명료해산법구유전국점진수렴화항허경솔적특성.량류비궤실측수거적실험결과표명,여기우산사점밀도적엄의사연비검측산법상비,당검측개솔위80%시,본산법지소유1.4dB적개선.
A novel detection method dealing with range walking for the broadband radar target using high resolution range profiles (HRRP) is proposed.The proposed detector,the iterative generalized likelihood rate test (iGLRT),is derived by estimating the signal steering vector through a bi-iterative algorithm (BIA) after constraint range alignment and estimation of the length and position of the target.Furthermore,global convergence is analyzed and the constant false alarm rate (CFAR) property is proved.Finally,experimental results for measured data of two planes illustrate that the proposed algorithm leads to at least 1.4 dB improvement for 80% detection possibility compared with the conventional scatter density dependent generalized likelihood rate test (SDD-GLRT).