A Fast Polar Format Imaging Algorithm of MIMO Radar with Sparse Array Based on Two-dimensional CZT
ZHAO Xiaoru
TONG Ningning
HU Xiaowei
DING Shanshan
Abstract：Aimed at the problem that by using the polar format algorithm (PFA) the computation amount is large and its imaging precision is affected by interpolation,a fast polar format imaging method of MIMO radar with sparse array based on two-dimensional CZT is proposed in this paper coupled with compressed sensing (CS) and the Chirp-Z translation (CZT).Instead of the interpolation,the CZT achieves the interpolation-re-sampling process by selecting proper parameters.With the imaging size changing,the simulation results show that the amount rate of computation work by the proposed algorithm to the PFA is maintained between 0.22-0.4,thus reducing the computation amount and improving the precision availably with small image entropy.
Keywords：Chirp-Z transformationpolar format algorithmsparse arrayMIMO radar imaging
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 32-36 )