A sparse representation and GTD model parameter estimation based multiband radar signal coherent compensation method
Yongqiang Zou, Xunzhang Gao, Xiang Li · 2016
In the traditional coherent compensation methods, the scattering center number and the overlapped frequency band data are two essential conditions which severely restrict the range of application. In this paper, depending on the sparsity of the scattering centers and the GTD(geometrical theory of diffraction) model, the parameter estimation is seen as a sparse representation problem here, and it is likely to obtain high accuracy estimation without knowing the scattering center number. The method in this paper gives two equations to estimate the incoherent parameters after deducing the relation between subbands, which does not need the overlapped frequency data. Applying the proposed method on simulated data, the results show that it can achieve coherent compensation precisely.