星載合成孔徑雷達(dá)(SAR)成像處理快速近似算法
A FAST APPROXIMATE IMAGING ALGORITHM FOR SPACEBORNE SYNTHETIC APERTURE RADAR
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摘要: 本文研究了一種用于星載SAR方位處理的快速算法,稱為SPECAN算法,該算法與常規(guī)的頻域算法相比較,在計算量、存貯量和算法結(jié)構(gòu)上都有明顯的優(yōu)勢。它可作為星載SAR粗處理的實時處理算法,對星載SAR實時成像處理具有重大意義。本文著重研究了SPECAN算法的結(jié)構(gòu)及其在星載SAR中所需解決的特殊問題。最后,利用SEASAT-A海洋衛(wèi)星SAR原始數(shù)據(jù)驗證了該算法的可行性。
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關(guān)鍵詞:
- 合成孔徑雷達(dá); 頻譜分析法; 方位分辨力; 距離徙動
Abstract: A fast algorithm of azimuth processing for spaceborne SAR, which is called SPECAN algorithm, is proposed. Comparing with general frequency algorithms, SPECAN has advantages in computation, memory and structure. SPECAN algorithm is very important for surveying real-time processing of spacehorne SAR. The structure and special problems for SPECAN algorithm used in spaceborne SAR are mainly engaged in this paper. Finally, raw data of SEASAT-A satellite is used to test the feasibility of SPECAN algorithm. -
Chialin Wu, K. Y. Liu, Michal Jin, IEEE Trans. on AES, AES-18(1982)5, 563-594.[2]W. E. Arens, Application of CCD Technology to Produce Imagery from Radar Data, Proc. of AIAA System Design Driven by Sensor Conf., Oct. 1976, Pasadena, Calif pp. 21-27.l[3]黃永紅,星載SAR實時信號處理高效算法,北京航空航天大學(xué)電子工程系碩士論文,北京,1989年3月.[4]黃永紅,星載合成孔徑雷達(dá)成像處理與運動補償,北京航空航天大學(xué)電子工程系博士論文,北京,1992年,5月. -
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