Zhenli Wang1, *, Qun Wang1, Jiayin Liu1, Zheng Liang1, Jingsong Xu2
CMC-Computers, Materials & Continua, Vol.65, No.3, pp. 2351-2363, 2020, DOI:10.32604/cmc.2020.011909
Abstract To address the low-resolution imaging problem in relation to traditional Range
Doppler (RD) algorithm, this paper intends to propose a new algorithm based on
Fractional Fourier Transform (FrFT), which proves highly advantageous in the
acquisition of high-resolution Synthetic Aperture Radar (SAR) images. The expression of
the optimal order of SAR range signals using FrFT is deduced in detail, and the
corresponding expression of the azimuth signal is also given. Theoretical analysis shows
that, the optimal order in range (azimuth) direction, which turns out to be very unique,
depends on the known imaging parameters of SAR, therefore the engineering
practicability of… More >
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