CAJ | 학술논문

为了解决水下强干扰背景下的远程弱目标被动探测问题，基于声矢量阵，本文提出了一种自适应波束域的检测算法。该算法首先对阵列接收数据进行波束域变换，令通带覆盖整个观测扇面，并自适应地抑制扇面外的强干扰信号；然后在波束域进行广义似然比检测。仿真结果表明，该算法能在强干扰背景下实现对远程弱目标的检测，并且具有恒虚警率特性。
위료해결수하강간우배경하적원정약목표피동탐측문제，기우성시량진，본문제출료일충자괄응파속역적검측산법。해산법수선대진렬접수수거진행파속역변환，령통대복개정개관측선면，병자괄응지억제선면외적강간우신호；연후재파속역진행엄의사연비검측。방진결과표명，해산법능재강간우배경하실현대원정약목표적검측，병차구유항허경솔특성。
In order to resolve the detection problem of passive remote weak targets under the background of strong interfer-ence ,a detection algorithm based on adaptive beam space transformation using acoustic vector sensor array is proposed .Firstly ,by designing a beamspace matrix which covers the observed sector and rejects the interference signals out-of-sector ,the array output da-ta are transformed to beamspace .Then ,the generalized likelihood ratio test is derived in beamspace .The simulation results show that the method can detect the passive weak targets efficiently under the background of strong interference ,and provide the constant false alarm rate (CFAR ) detection .