Experimental performance of adaptive beamforming in a sonar environment with a towed array and moving interfering sources

• Published in: IEEE transactions on signal processing Vol. 48; no. 1; pp. 246 - 250
• Main Authors: Gershman, A.B., Nemeth, E., Bohme, J.F.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.01.2000; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Adaptive algorithms; Adaptive arrays; Algorithms; Applied sciences; Array signal processing; Arrays; Beamforming; Degradation; Detection, estimation, filtering, equalization, prediction; Exact sciences and technology; Information, signal and communications theory; Interference; Noise; Performance evaluation; Power measurement; Sea measurements; Signal and communications theory; Signal processing; Signal to noise ratio; Signal, noise; Sonar; Sonar measurements; Telecommunications and information theory; Working environment noise; Performance evaluation; Beamforming; Adaptive antenna; Sonar; Signal estimation; Signal processing; Antenna array
• ISSN: 1053-587X; 1941-0476
• DOI: 10.1109/78.815495

The performances of adaptive array algorithms are known to suffer from a strong degradation in scenarios with moving interfering sources. In this article, basic adaptive beamforming techniques are compared using shallow sea sonar data recorded in a towed horizontal array environment with moving interfering sources originated from shipping noise. Our experimental results show the relationship between the practical performances of adaptive and conventional beamforming techniques compared in terms of output SINR or a related measure given by the noncompensated postbeamforming interference power. These results demonstrate noticeable performance improvements that can be achieved using several robust algorithms relative to traditional adaptive beamforming schemes.