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This paper presents three algorithms to suppress sidelobe of images produced by both RDA and CSA imaging algorithms. The first is windowed RDA (W-RDA) and windowed CSA(W-CSA) which decreases the sidelobe and increases the signal-to-noise ratio. The second is spatially variant apodization RDA and CSA (SVA-RDA and SVA-CSA) which weighs the amplitude of each point in frequency domain and then suppresses...
The purpose of this paper is to solve the imaging problems of one-stationary bistatic synthetic aperture radar (BiSAR) squint mode. Through the analysis of the target's two-dimensional spectrum, an improved chirp scaling algorithm (CSA) is got. It can deal with the space variability of this kind of BiSAR and the simulation is done to verify the validity and feasibility of this algorithm.
The fractional Fourier transform (FrFT), which is a generalized form of the well-known Fourier transform, has only started to appear in the field of signal processing decade ago. This has opened up the possibility of a new range of potentially promising and useful applications. In this paper we apply the new FrFT-based Chirp Scaling Algorithm (CSA) to a high resolution small target imaging and compare...
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