항공기 기반 FMCW-SAR 영상복원을 위한 간소화된 분할연산기법

황지환; 김덕진; 김진우; 옥재우; 신희섭; 유응노
September 2017
Journal of Korean Institute of Electromagnetic Engineering & Sci;Sep2017, Vol. 28 Issue 9, p723
Academic Journal
Simplified factorizing-technique to improve the efficiency on computational procedure and the complexity of the conventional back-projection algorithm, which is used to reconstruct airborne FMCW-SAR image, is suggested, and the reconstruction process of SAR image by this simplified factorizing-technique are presented in this paper. This technique can be efficiently applied to airborne FMCW-SAR having a relatively narrow beamwidth and long synthetic aperture length, and its basic rationale is to exclude the data that has low level of contribution during computational procedure. Using the raw data of practical airborne FMCW-SAR system, performances of this proposed technique such as SAR image quality and processing time were compared and analyzed.


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