CAJ | 학술논문

为了弥补阵列天线导向矢量失配和相位测量噪声对测向性能的影响，提出一种基于稳健 capon 波束形成技术（robust capon beamforming，RCB）和锁相环的矢量最优估计与跟踪鉴别测向方法。首先基于 RCB 与锁相环原理，对目标来波信号导向矢量进行最优估计与跟踪测量；然后在稳定、准确跟踪导向矢量的基础上，借鉴扩频接收机伪码鉴相原理确定来波信号方向。仿真分析表明，该方法能够弥补阵列流型失配和相位噪声的影响、突破角度相关间隔的限制，准确测量来波信号的方向。
위료미보진렬천선도향시량실배화상위측량조성대측향성능적영향，제출일충기우은건 capon 파속형성기술（robust capon beamforming，RCB）화쇄상배적시량최우고계여근종감별측향방법。수선기우 RCB 여쇄상배원리，대목표래파신호도향시량진행최우고계여근종측량；연후재은정、준학근종도향시량적기출상，차감확빈접수궤위마감상원리학정래파신호방향。방진분석표명，해방법능구미보진렬류형실배화상위조성적영향、돌파각도상관간격적한제，준학측량래파신호적방향。
In order to compensate the impact of the antenna array steering vector mismatch and the phase measurement noise,the optimal measurement method is proposed for steering vector,and the tracking identifi-cation method of direction finding is designed,basing on the robust capon beamforming (RCB)and phase-locked loop.Firstly,using the RCB algorithm estimate the optimal signal steering vector,and then basing on the prin-ciple of phase-locked loop to closed-loop track target signal steering vector.After steady and accurate tracking of the steering vectors,referencing the principle of spread spectrum receiver pseudo-code phase detector,the direc-tion of the target signal is determined.Simulation results show that the proposed method can compensate the impact of the steering vector mismatch and phase measurement noise,break through the restrictions of the angle correlation interval,and accurate measure the target signal direction.