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Remote Sensing Technology and Application  2003, Vol. 18 Issue (2): 103-108    DOI: 10.11873/j.issn.1004-0323.2003.2.103
    
Area Target's Raw Data Simulation of Spaceborne SAR Based on Elliptical Orbit
WAN Feng1,2, ZHAO Yu-peng1,2, YANG Ru-liang2
(1.Institute of Electronics,The Chinese Academy of Sciences,Beijing100080,China;2.Graduate School,The Chinese Academy of Sciences, Beijing100039,China)
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Abstract  

A method of area target' s raw data simulation of spaceborne SAR based on elliptical orbit is presented. Foremost, based on models of satellite with elliptical orbit and targets with rotation of the earth,the distance between the satellite platform and target can be attained, which is compared with the one obtained by other models. The effect of the difference between the elliptical orbit model and circle orbit model on the azimuth compression is analyzed. An optimum method based on polynomial model is brought out.Then, the method and whole procedure of simulating area target' s raw data are described. The detailed description of math model of area target' s echoes is given first. Following are the steps of simulating raw data of area target. Lastly, the image of the compressed raw data is illustrated and analyzed. The validity of compression algorithm is proved by the compressed result of single point target. After the comparison between the compressed image of raw data simulated and the original image, the conclusion can be reached that this paper' s method of simulating raw data of area target is right.

Key words:  Spaceborne SAR      Elliptical orbit      Simulation      Area target     
Received:  29 October 2002      Published:  23 November 2011
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Cite this article: 

WAN Feng, ZHAO Yu-peng, YANG Ru-liang. Area Target's Raw Data Simulation of Spaceborne SAR Based on Elliptical Orbit. Remote Sensing Technology and Application, 2003, 18(2): 103-108.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2003.2.103     OR     http://www.rsta.ac.cn/EN/Y2003/V18/I2/103

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