Azimuth digital signal processing algorithms for spaceborne SAR

Author

Chunsheng, Li ; Li Jingwen ; Yinqing, Zhou

Author_Institution

Beijing Univ. of Aeronaut. & Astronaut., China

fYear

1991

fDate

16-17 Jun 1991

Firstpage

475

Abstract

In this paper, several algorithms of azimuth processing of spaceborne synthetic aperture radar (SAR) is discussed in detail. According to the characteristic of spaceborne SAR, the Doppler history is analysed, and a mathematic model of the echo signal is established for discussing azimuth processing algorithms. The time domain correlation, frequency domain correlation, time/frequency domain correlation and spectral analysis algorithm of spaceborne SAR azimuth processing are compared and analysed. The computer simulation of imaging processing for spaceborne SAR is carried out with the method of time/frequency domain correlation. This method can easily correct range migration in frequency domain and its hardware architecture can be realized in a conventional and simple manner

Keywords

Doppler effect; correlation methods; frequency-domain analysis; picture processing; radar applications; radar theory; spectral analysis; time-domain analysis; azimuth processing; computer simulation; digital signal processing algorithms; frequency domain correlation; imaging processing; spaceborne SAR; spectral analysis algorithm; synthetic aperture radar; time domain correlation; time/frequency domain correlation; Algorithm design and analysis; Azimuth; Digital signal processing; Frequency domain analysis; History; Mathematics; Signal analysis; Signal processing algorithms; Spaceborne radar; Synthetic aperture radar;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1991. Conference Proceedings, China., 1991 International Conference on

Conference_Location

Shenzhen

Type

conf

DOI

10.1109/CICCAS.1991.184392

Filename

184392