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Remote Sensing Technology and Application  2017, Vol. 32 Issue (6): 1071-1077    DOI: 10.11873/j.issn.1004-0323.2017.6.1071
    
High Resolution Implementation based on Scanning Spaceborne Radar
Wang Gang1,2,Dong Xiaolong1,Zhu Di1
(1.Key Laboratory of Microwave Remote Sensing,National Space Science Center,Chinese Academy of Sciences,Beijing 100190,China;
2.University of Chinese Academy of Sciences,Beijing 100049,China)
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Abstract  In order to improve a relatively high spatial resolution for spaceborne scatterometer and satisfy the observation requirements of geophysical parameters (such as,snow water equivalent,snow/ice freezing and thawing),the analysis and research is carried on based on the scanning spaceborne microwave radar.Based on the pulse compression processing and Doppler technology,a scanning resolution improvement method is established.For the characteristic that the azimuth is changing with the rotating antenna,a model of different azimuth angles is established.The results show that the azimuth resolution is related to radar Doppler information,and using this relationship can improve the azimuth resolution.The spatial resolution can reach 2km at side\|looking and 2~5 km at inclined front and rear.In view of the snow water equivalent observations,the system Kpc can reach 0.3 when the spatial resolution is 5km,and can reach 0.3~0.5 when the spatial resolution is 2 km.

Key words:  Microwave scatterometer      Resolution      Doppler     
Received:  25 November 2016      Published:  08 March 2018
TP 732.1  
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Wang Gang
Dong Xiaolong
Zhu Di

Cite this article: 

Wang Gang,Dong Xiaolong,Zhu Di. High Resolution Implementation based on Scanning Spaceborne Radar. Remote Sensing Technology and Application, 2017, 32(6): 1071-1077.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2017.6.1071     OR     http://www.rsta.ac.cn/EN/Y2017/V32/I6/1071

 
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