Title :
Azimuth digital signal processing algorithms for spaceborne SAR
Author :
Chunsheng, Li ; Li Jingwen ; Yinqing, Zhou
Author_Institution :
Beijing Univ. of Aeronaut. & Astronaut., China
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;
Conference_Titel :
Circuits and Systems, 1991. Conference Proceedings, China., 1991 International Conference on
Conference_Location :
Shenzhen
DOI :
10.1109/CICCAS.1991.184392
