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| A New Method for Computing Radar Altimeter Look–up Correction Table and Its Application |
| Wang Lei①②③ Xu Ke①② Xu Xi-yu①② Shi Ling-wei①② |
①(Key Laboratory of Microwave Remote Sensing, Chinese Academy of Sciences, Beijing 100190, China)
②(Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China)
③(University of Chinese Academy of Sciences, Beijing 100049, China) |
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Abstract Presently, the radar altimeter look-up correction tables are usually computed with an approximate exponential flat sea surface response function, and the effects of this approximation are neglected. In this paper, the errors of this approximation method are analyzed, and a new method of using the accurate flat sea surface response function is derived to compute the look-up correction tables. This new method can greatly decrease the errors when antenna mispointing angle is large. The new method is applied to HY-2 altimeter, and obtains a more accurate result.
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Received: 17 August 2012
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Corresponding Authors:
Wang Lei
E-mail: nmnghjss@gmail.com
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2013, Vol. 35 
