用ADSP21062高速信号处理系统实现机载SAR实时成像处理器的方位向处理

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Abstract Real-time Imager can provide Synthetic Aperture Radar(SAR) image in real-time mode which is significant for airborne SAR applications such as real-time monitoring and battle reconnaissance. A SAR real-time imager usually implements SAR imaging algorithms with high-speed DSP system. This paper describes a high-speed DSP system based on ADSP21062 to realize azimuth processing with range-Doppler algorithm, consisting of range migration correction and azimuth compression. 8 ADSP21062s are organized in 4 parallel processing blocks in this system achieving a processing speed of 960MFLOP. Elaborate software programming ensures a high efficient utilization of hardware. Experimental simulation and field flight indicate this system is successful. The principle architecture, hardware implementation and software design are presented in this paper in details.

Key words： Synthetic aperture radar Real-time imager DSP

Received: 01 January 1900

PACS:	TN951
	TN911.72

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	Yu Weidong
	Wu Shumei

Cite this article:

Yu Weidong,Wu Shumei. Using ADSP21062 based hgh-speed signal processing system to implement azimuth processing of real-time imager for airborne SAR[J]. , 2002, 24(8): 1143-1147 .

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http://jeit.ie.ac.cn/EN/ OR http://jeit.ie.ac.cn/EN/Y2002/V24/I8/1143