CAJ | 학술논문

针对机载雷达运动目标检测中转发式干扰会引起虚警、抬高检测门限并降低雷达系统的检测概率的问题，提出了一种基于最大似然估计的机载雷达运动目标检测算法。首先估计转发式干扰的空域导向矢量，然后采用最大似然方法估计出运动目标的幅度，并以此来进行检测。仿真实验表明，该算法在完成杂波抑制的同时，可有效抑制旁瓣转发式干扰对运动目标检测的影响，并能在一定程度上降低主瓣转发式干扰对运动目标检测的影响。
침대궤재뢰체운동목표검측중전발식간우회인기허경、태고검측문한병강저뢰체계통적검측개솔적문제，제출료일충기우최대사연고계적궤재뢰체운동목표검측산법。수선고계전발식간우적공역도향시량，연후채용최대사연방법고계출운동목표적폭도，병이차래진행검측。방진실험표명，해산법재완성잡파억제적동시，가유효억제방판전발식간우대운동목표검측적영향，병능재일정정도상강저주판전발식간우대운동목표검측적영향。
Repeater jamming brings a great challenge to moving target detection for airborne radar.It not only causes a false alarm but also raises the threshold of the detector,which reduces the probability of detection.A method based on maximum likelihood estimation to detect a moving target for airborne radar under repeater jamming environment is proposed.Firstly,the spatial steering vector of repeater jamming is estimated.Afterward,the maximum likelihood method is utilized to estimate the amplitude of the target, whose estimated amplitude is used to detect the moving target.Simulations show that this method is capable not only of suppressing the clutter but also of reducing the effect of repeater jamming from the sidelobe on moving target detection.Moreover,it can reduce the effect of repeater jamming from the mainlobe to a certain degree.