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| A Modified Wave-number Domain Algorithm for Missile-borne Squinted SAR Data Processing |
| Xiao Zhong-yuan Xu Hua-ping Li Chun-sheng |
| School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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Abstract The Doppler parameters of missile-borne SAR received signal vary much with slant range due to missiles’ high speed and non-ideal movements. Thus applying the classical wave-number domain algorithm can hardly achieve high precision for missile-borne SAR imaging processing. This paper proposes a modified wave-number domain algorithm based on the classical one to meet the demand of high resolution and wide swath for missile-borne SAR imaging. Azimuth compression is implemented in the range time domain or range space domain instead of two dimensional wave-number domain in which it is carried out for the classical algorithm. And Doppler parameters can not correspond to the variation of slant range in the two dimensional wave-number domain. Consequently the modified approach can eliminate the phase error brought by using the same Doppler parameters for the classical algorithm. Simulation result illustrates the validity of the approach.
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Received: 04 November 2010
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Corresponding Authors:
Xiao Zhong-yuan
E-mail: xzy@ee.buaa.edu.cn
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2011, Vol. 33 
