Fault-Tolerant Parallel Algorithms for Adaptive Matched-Field Processing on Distributed Array Systems

Cho, Kilseok; George, Alan; Subramaniyan, Raj

doi:10.21236/ada466282

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“…The third task is steering, which steers the array and calculates the power for each steering direction [6]. The block diagram of the narrowband sequential MVDR algorithm from Cho and George [19] is given in Figure 4. In order to provide a reference point for the enhanced sequential algorithm studied in this research.…”

Section: Sequential Mvdr Algorithm and Performancementioning

confidence: 99%

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Performance Evaluation of Hexagonal Array Adaptive Beamforming Algorithm Based on Inverse QR-RLS for Active Sonar Application

Wang

Pan

2009

Journal of Algorithms & Computational Technology

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In shallow water areas, to enhance underwater targets detection performance improve computation efficiency of active sonar, a computationally efficient adaptive beamformer (spatial filter) based on inverse QR (IQR) and recursive least-squares (RLS) is developed under fast Fourier transform framework, for standard hexagonal receiving array implementation. The IQR-RLS algorithm has good numerical stability and can be mapped onto coordinate rotation digital computer processor-based systolic arrays, which is suitable for real time applications. Using the proposed scheme to construct beamformer, which reduces computational complexity significantly and offers better converge rate than conventional adaptive beamformer. The simulation and lake test results demonstrates the algorithm improves interference (reverberation) suppression ability. It improves SNR about 2dB of still bottom target detection in reverberation limited area.

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Section: Sequential Mvdr Algorithm and Performancementioning

confidence: 99%

“…The Eqn. (19) shows, to update from , we need to search unit orthogonal matrix Q(n) and make elements of are zero based on Givens rotation [11]. The IQR-RLS initial value is .…”

Section: Adaptive Beamforming Based On Iqr-rlsmentioning

confidence: 99%

Performance Evaluation of Hexagonal Array Adaptive Beamforming Algorithm Based on Inverse QR-RLS for Active Sonar Application

Wang

Pan

2009

Journal of Algorithms & Computational Technology

View full text Add to dashboard Cite

show abstract

Fault-Tolerant Parallel Algorithms for Adaptive Matched-Field Processing on Distributed Array Systems

Cited by 1 publication

References 0 publications

Performance Evaluation of Hexagonal Array Adaptive Beamforming Algorithm Based on Inverse QR-RLS for Active Sonar Application

Performance Evaluation of Hexagonal Array Adaptive Beamforming Algorithm Based on Inverse QR-RLS for Active Sonar Application

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