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The curvilinear synthetic aperture radar (SAR) is considered as a more practicable three-dimensional (3-D) SAR imaging system. Its received data, however, are the sparse data in 3-D frequency space. Therefore, the core problem in image formation is removing the influence of the severe high sidelobes on azimuth-height plane. Robust Capon beamforming (RCB) is a non-parametric adaptive method, which...
Focused beamformer is an efficient broadband beamforming method due to the advantages like ability to operation in multipath environments and computational efficiency. However, the robustness of focused beamformer is not enough. To overcome the shortcoming, a novel robust broadband beamforming method based on focusing approach is presented in this paper to achieve constant beamwidth for acoustic imaging...
Cyclic adaptive beamforming (CAB) algorithm becomes an efficient blind beamforming algorithm due to its low computation complexity and fast convergence rate. However, the robustness of CAB is not enough. To overcome the shortcomings, a novel robust CAB algorithm is presented. The new algorithm is based on a combination of the ideas in the CAB algorithm and the robust capon beamforming (RCB). It still...
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