摘要
由于幅值和相位扭曲声波到达单个矢量传感器时仍能保持空间一致性,基于单个矢量传感器,采用计算有效的子空间技术,提出了一种幅值和相位扭曲水下声波的方位角和俯仰角估计算法。分析了影响算法性能的因素,并针对单个矢量传感器接收的信号波形具有扭曲幅值和扭曲相位的情况,推导了方位角和俯仰角估计的CRB(Cramer-Rao bound)。数值仿真表明算法对信号的振幅和相位扭曲具有很强的鲁棒性。
Since an amplitude-distorted and phase-distorted acoustic-wave arriving at a single vector-hydrophone can still hold the perfect spatial coherence of wavefront, a new algorithm of azimuth and elevation estimation for amplitude-distorted and phase-distorted acoustic-waves is proposed using a subspaee technique of low computational complexity, based on an underwater vector-hydrophone. The parameters affecting algorithm performance are analyzed and Cramer-Rao bound is derived in case that acoustic-wave arriving at a single vector-hydrophone has the amplitude-distorted and phase-distorted. The simulations show the proposed algorithm is robust to the amplitude-distorted and phase-distorted.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2008年第7期1253-1255,共3页
Systems Engineering and Electronics
关键词
信号处理
方位角和俯仰角估计
振幅和相位扭曲声波
水下声波矢量传感器
signal processing
azimuth and elevation estimation
amplitude-distorted and phase-distortedacoustic-wave
underwater vector-hydrophone
