NDLI: A new method of improving the accuracy of the hyperbolic range equation

Content Provider	IEEE Xplore Digital Library
Author	Zhao Bingji Qi Xiangyang Deng Yunkai Robert, W. Song Hongjun Luo Yunhua
Copyright Year	2012
Description	Author affiliation: Department of Space Microwave Remote Sensing System, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China (Zhao Bingji; Qi Xiangyang; Deng Yunkai; Robert, W.; Song Hongjun; Luo Yunhua)
Abstract	The range equation employed in the current low earth orbital Synthetic Aperture Radar (Leo-SAR) systems is the hyperbolic range equation (HRE). The key parameters of it are effective velocity and effective squint angle. Traditionally the calculation method of the two values may lead to large errors, and it is only fit for Leo-SAR with moderate space resolution. To get the azimuth resolution on the order of one meter or even higher, an improved method based on the accurate second-order Doppler parameters is used in this paper to decrease the errors of the two parameters above. Then we can get the improved hyperbolic range equation (IHRE). The theory is validated by the parameters of TerraSAR-X, and the image with the space resolution around 0.35m is focused perfectly.
Starting Page	5770
Ending Page	5773
File Size	168330
Page Count	4
File Format	PDF
ISBN	9781467311601
ISSN	21536996
e-ISBN	9781467311595
e-ISBN	9781467311588
DOI	10.1109/IGARSS.2012.6352299
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-22
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Azimuth Earth Doppler effect Satellites Mathematical model Equations Space vehicles Doppler parameters SAR low earth orbit hyperbolic range equation
Content Type	Text
Resource Type	Article

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