Computer Science – Other Computer Science
Scientific paper
2011-10-07
Signal & Image Processing : An International Journal (SIPIJ) Vol.2, No.3, September 2011
Computer Science
Other Computer Science
13 pages, 3 figures, Signal and image processing:An international Journal 2011
Scientific paper
10.5121/sipij.2011.2306
Continuing to estimate the Direction-of-arrival (DOA) of the signals impinging on the antenna array, even when a few elements of the underlying Uniform Linear Antenna Array (ULA) fail to work will be of practical interest in RADAR, SONAR and Wireless Radio Communication Systems. This paper proposes a new technique to estimate the DOAs when a few elements are malfunctioning. The technique combines Singular Value Thresholding (SVT) based Matrix Completion (MC) procedure with the Direct Data Domain (D^3) based Matrix Pencil (MP) Method. When the element failure is observed, first, the MC is performed to recover the missing data from failed elements, and then the MP method is used to estimate the DOAs. We also, propose a very simple technique to detect the location of elements failed, which is required to perform MC procedure. We provide simulation studies to demonstrate the performance and usefulness of the proposed technique. The results indicate a better performance, of the proposed DOA estimation scheme under different antenna failure scenarios.
Jagadeesha S. N.
Yerriswamy T.
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