High squint mode SAR imaging using modified RD algorithm

Author

Wei Wang ; Weihua Wu ; Wuge Su ; Ronghui Zhan ; Jun Zhang

fYear

2013

fDate

6-10 July 2013

Firstpage

589

Lastpage

592

Abstract

Based on the analysis of range-azimuth coupling in two dimensional frequency domain, a modified RD algorithm is proposed to account for the problem of SAR imaging with high squint angle. The measures of decoupling consist of second range compression (SRC), third order coupling compensation and range cell migration correction (RCMC). In addition, the type of RCMC is modified to eliminate target´s movement in range direction which will cause the blur of distance. Simulation results verify the proposed algorithm and perfectly focused image is obtained with a squint angle as large as 80 degree.

Keywords

Doppler shift; radar imaging; synthetic aperture radar; RCMC; SRC; high squint angle; high squint mode SAR imaging; modified RD algorithm; range Doppler algorithm; range cell migration correction; range direction; range-azimuth coupling; second range compression; third order coupling compensation; two dimensional frequency domain; Algorithm design and analysis; Azimuth; Couplings; Imaging; Missiles; Radar polarimetry; Synthetic aperture radar; High Squint Mode; Range Cell Migration Correction (RCMC); Range Doppler Algorithm (RDA); Synthetic Aperture Radar (SAR);

fLanguage

English

Publisher

ieee

Conference_Titel

Signal and Information Processing (ChinaSIP), 2013 IEEE China Summit & International Conference on

Conference_Location

Beijing

Type

conf

DOI

10.1109/ChinaSIP.2013.6625409

Filename

6625409