Direction-finding of coherent signals based on cylindrical vector-hydrophones array

作者：Tao, Jian-Wu^*; Chang, Wen-Xiu; Cui, Wei

来源：Signal, Image and Video Processing, 2010, 4(2): 221-232.

DOI：10.1007/s11760-009-0113-8

• Coherent signal
• Vector-hydrophone smoothing algorithm
• Direction of arrival estimation
• Cylindrical arrays

In this paper, a new "particle-velocity-field and spatial smoothing" (PVFSS) algorithm is proposed for direction-finding of coherent signals, using the cylindrical vector-hydrophones array in the underwater acoustic medium. In contrast to the customary "spatial smoothing" technique, it provides a smaller reduction in the overall array's spatial aperture. While in contrast to the "particlevelocity-field smoothing" technique, it may increase the number of decorrelate-able coherent signals. Moreover, an ESPRIT-based, closed-form direction-finding algorithm is proposed and a method of removing cyclic ambiguity is provided. Finally, the theoretical performance of the proposed algorithm is analyzed. Simulation results are shown to verify the efficacy of the proposed algorithm.

• 出版日期2010-6
• 单位吉林大学