A novel spectrum reconstruction algorithm based on FrFT for multiple azimuth beam SAR

Author

Zhou, BaoLiang ; Zhang, Shunsheng ; Zhang, Wei ; Dai, Chunyang ; Kong, LingKun

Author_Institution

Res. Inst. of Electron. Sci. & Technol., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2010

fDate

20-23 June 2010

Firstpage

1218

Lastpage

1222

Abstract

In this paper, we consider the problems of reconstructing the spectrum based on Fractional Fourier Transform (FrFT) from periodic non-uniformly sampled signal in multiple azimuth beams SAR system. First, based on the theory of the paired echoes, the influence of periodic non-uniform sampling for SAR imaging has been derived. Second, signal model of non-uniformly sampling in azimuth direction has been established. Finally, detailed analysis of spectrum reconstruction algorithm in the fractional Fourier domain has been performed. In addition, the simulations are carried out to verify the correctness of the results.

Keywords

Fourier transforms; image sampling; radar imaging; synthetic aperture radar; SAR imaging; azimuth beam SAR; azimuth direction; fractional Fourier transform; nonuniformly sampling; paired echoes theory; spectrum reconstruction algorithm; Azimuth; Fourier transforms; Image reconstruction; Optical sensors; Optical transmitters; Reconstruction algorithms; Sampling methods; Signal processing algorithms; Spatial resolution; Surveillance; FrFT; multiple azimuth beam; spectrum reconstruction; synthetic aperture radar;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Automation (ICIA), 2010 IEEE International Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4244-5701-4

Type

conf

DOI

10.1109/ICINFA.2010.5512126

Filename

5512126