星載合成孔徑雷達(dá)聚束模式方位分辨率研究
Study on the Azimuth Resolution of Spaceborne SAR Working on Spotlight Mode
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摘要: 從星載合成孔徑雷達(dá)與機(jī)載合成孔徑雷達(dá)成像幾何關(guān)系的差異,可以看出經(jīng)典的聚束模式合成 孔徑雷達(dá)方位分辨率公式對于星載情況有較大誤差。該文給出了適用于星載聚束模式合成孔徑雷達(dá)的方位向分辨率的計算方法,數(shù)據(jù)模擬結(jié)果驗證了方法的難確性。
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關(guān)鍵詞:
- 合成孔徑雷達(dá); 聚束式合成孔徑雷達(dá); 分辨率; 多普勒帶寬
Abstract: From the difference of imaging geometry between spaceborne SAR, and airborne SAR, traditional formula computing the azimuth resolution of airborne SAR working on spotlight mode will bring big errors if it is used for spaceborne SAR. In this paper, the new formula of the azimuth resolution for spaceborne spotlight SAR. is presented, and the data simulation results validate the validity of the new method. -
Carrara W G, Goodman R S, Majewski R M. Spotlight Synthetic Aperture Radar: Signal Processing Algorithms. Norwood, MA: Artech House, 1995, Chap. 1.[2]Jakowatz C V, Wahl D, Eichel P, Ghiglia D C, et al.. Spotlight-Mode Synthetic Aperture Radar:A Signal Processing Approach, Norwell, MA: Kluwer Academic, 1996, Chap. 2.[3]洪文.機(jī)載聚束式合成孔徑雷達(dá)成像的聚焦處理研究.[博士論文],北京:北京航空航天大學(xué),1997.[4]曹福祥,袁建平,鄭諤.聚束照射合成孔徑雷達(dá)方位分辨率研究.現(xiàn)代雷達(dá),1998,20(6):6-10.[5]張澄波.綜合孔徑雷達(dá)原理、系統(tǒng)分析與應(yīng)用.北京:科學(xué)出版社,1989,第三章. -
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