An airborne squint SAR processing algorithm

Author

Yan, Huang ; Chunsheng, Li ; Jingwen, Li ; Yinqing, Zhou

Author_Institution

Dept. of Electron. Eng., Beijing Univ. of Aeronaut. & Astronaut., China

fYear

1996

fDate

8-10 Oct 1996

Firstpage

334

Lastpage

337

Abstract

An airborne squint synthetic aperture radar (SSAR) imaging processing method using a chirp scaling (CS) algorithm is presented. The cubic phase in the azimuth spectrum is considered in the chirp scaling phase factor and azimuth factor. Compared with the range/Doppler (RD) algorithm and wavenumber algorithm, the algorithm not only completes range cell migration correction (RCMC) precisely, but also avoids interpolation, and requires only complex multiplies and fast Fourier transforms (FFTs) to implement the processing. The CS algorithm provides an image quality that is better than the precision RD algorithm. This paper gives computer simulation results of the radar imaging. The results show that this imaging method is effective

Keywords

airborne radar; fast Fourier transforms; image resolution; radar imaging; spectral analysis; synthetic aperture radar; FFT; airborne squint SAR processing algorithm; azimuth factor; azimuth spectrum; chirp scaling algorithm; chirp scaling phase factor; complex multiplies; computer simulation results; cubic phase; fast Fourier transforms; image quality; imaging method; imaging processing method; radar imaging; range cell migration correction; range/Doppler algorithm; synthetic aperture radar; wavenumber algorithm; Airborne radar; Azimuth; Chirp; Frequency modulation; High-resolution imaging; Image quality; Interpolation; Radar antennas; Radar imaging; Radar signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar, 1996. Proceedings., CIE International Conference of

Conference_Location

Beijing

Print_ISBN

0-7803-2914-7

Type

conf

DOI

10.1109/ICR.1996.574455

Filename

574455