一種基于SCFT算法的距離向多孔徑SAR成像算法
A Range Multi-aperture SAR Imaging Method Based on SCFT
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摘要: 距離向多孔徑SAR模式是一種高分辨率的寬測(cè)繪帶成像模式。反解運(yùn)算和成像處理是距離向多孔徑成像算法的兩個(gè)部分，兩者合理配合使用是實(shí)現(xiàn)多孔徑模式高精度成像的關(guān)鍵。該文給出了一種采用變尺度傅里葉變換( SCaled FT, SCFT,)算法來實(shí)現(xiàn)成像處理并與反解運(yùn)算結(jié)合的多孔徑成像算法。與已有的處理算法比較，該算法在不顯著增加計(jì)算復(fù)雜度的條件下可獲得較高的成像質(zhì)量。文中最后給出了仿真結(jié)果。
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關(guān)鍵詞:
- SAR;多孔徑;寬測(cè)繪帶;變尺度傅里葉變換;成像
Abstract: The SAR working mode of range multi-aperture is a high resolution imaging mode for wide swath. Resolving and imaging are the two parts of range multi-aperture imaging algorithm. How to match the two parts together is the key problem for the algorithm. This paper presents a new method based on SCFT (SCaled FT) to solve the problem. Simulation and comparison between different methods is also given to prove the feasibility of range multi-aperture SAR imaging method based on SCFT. -
Currie A, Brown M A. Wide-swath SAR. IEE proc.-F, 1992, 139(2): 122.135.[2]王小青,郭琨毅,朱敏慧,盛新慶.距離向多孔徑接收寬測(cè)繪帶SAR成像方法的研究[J].電子與信息學(xué)報(bào).2004, 26(5):739-瀏覽[3]Franceschetti G, Lanari R. synthetic aperture radar processing.Florida: CRC press, 1999, Chapter2, 3.[4]郭琨毅, 王小青, 盛新慶.距離向多孔徑接收寬測(cè)繪帶SAR三種成像算法的比較. 電波科學(xué)學(xué)報(bào), 2005, 20(1): 119.124. -
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