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The basis mismatch in the sparse recovery based space-time adaptive processing (SR-STAP) can severely affect the reconstruction of the space-time spectrum. In this paper, we propose a parameter-searched orthogonal matching pursuit (PSOMP) algorithm to eliminate the effect of the basis mismatch in SR-STAP. In the PSOMP, the optimal parameters carried in the atom selected by the OMP are searched so...
The focal underdetermined system solver (FOCUSS) is a powerful tool for sparse representation in complex underdetermined systems. This paper presents the fast FOCUSS method based on the bi-conjugate gradient (BICG), termed BICG-FOCUSS, to speed up the convergence rate of the original FOCUSS. BICGFOCUSS was specifically designed to reduce the computational complexity of FOCUSS by solving a complex...
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