摘要
时域解析信号MVDR算法(TAMVDR)可以在一次快拍的前提下获得较好的宽带信号处理效果,是一种在阵列信号处理中具有广泛应用前景的高分辨波束形成方法,但因运算量较大制约了其工程应用。本文详细分析基于傅里叶变换的时域解析信号构造和精确时延方法,提出改进的快速TAMVDR算法,给出具体算法流程和运算量分析。海上实验结果表明,快速TAMVDR算法的处理性能与TAMVDR算法相当,其波束分辨力和检测能力均优于常规波束形成技术,其运算量仅为TAMVDR算法的1/4。
Time-domain analytic signal MVDR method （TAMVDR） can get good effect in just one snapshot and can be used as a high-resolution beam forming method in array signal processing with a broad applicationprospects,but its calculation is too large, which has limited its application. The fundamental of the TAMVDR and the feasibility ofconstructingof thetime-domain analytic signals and accurate delay technology based Fourier transform were studied. A fast TAMVDR algorithm and its flowchart were proposed and the amount of its computation was analyzed. Sea trial results show that the performance of fast TAMVDR algorithm was equivalent to the TAMVDR algorithm, but its computation amount was only a quarter of the TAMVDR algorithm. The beam resolution and detection capability of the fast TAMVDR were better than the conventional beamforming technology.
出处
《舰船科学技术》
北大核心
2016年第1期85-89,116,共6页
Ship Science and Technology
