Robust Centered Element Concentric Circular Antenna Array with Low Side Lobe Using Variable Loading and Tapering Windows in the Presence of Array Imperfections

Figure 8

(a) Normalized power pattern comparison of the MVDR beamformer and robust MVDR beamformer by using uniform tapering in the presence of array imperfections. (b) Normalized power pattern comparison of the tapered MVDR beamformer and proposed tapered robust MVDR beamformer by using Hamming amplitude tapering in the presence of array imperfections. (c) Normalized power pattern comparison of the tapered MVDR beamformer and proposed tapered robust MVDR beamformer by using Hanning amplitude tapering in the presence of array imperfections.

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