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    基于SAR的海上溢油監測最佳探測條件分析
    Best parametric analysis To Monitor oil spill Based on SAR
    投稿時間:2010-08-10  修訂日期:2010-11-29
    DOI:
    中文關鍵詞:  SAR,海上溢油,入射角,波段, 后向散射
    英文關鍵詞:SAR,Oil spill, incidence angle, band,backscattering
    基金項目:海洋行業公益項目
    作者單位郵編
    鄒亞榮 國家衛星海洋應用中心 100081
    摘要點擊次數: 4451
    全文下載次數: 580
    中文摘要:
          海上溢油對海洋生態造成的災難性的影響,甚至在幾十年內都難以恢復。本文基于SAR數據開展海上溢油監測探測條件分析,在后向散射系數計算的基礎上,從波段、極化方式、入射角等方面開展了海上溢油監測探測參數分析。結果表明:基于SAR的海上溢油監測,從波段分析,X波段與C波段較L波段更適合監測海上溢油;從極化方式分析,VV極化較HH、HV極化更適合監測海上溢油;從入射角分析,在計算溢油與海水臨界值時,經多次實驗:位于遠入射角的疑似溢油,不易與海水分離;相對近入射角的疑似溢油,較容易與海水分離。ALOS PALSAR影像的入射角范圍約在23度到43度之間,COSMO-SlyMed入射角范圍在32度到35度之間,易于將海水與溢油分離的入射角范圍大致為23度到35度。
    英文摘要:
          Oil spill influences sea ecology, even with difficulty restores in several dozens years. This article based on the SAR data development marine oil spill monitor survey condition analysis, in the backscattering coefficient computation's foundation, from aspects and so on wave band, polarization mode, incidence angle has carried out the marine oil spill monitor survey parametric analysis. The result shows: Based on the SAR marine oil spill monitor, from the wave band analysis, X wave band and the C wave band compares the L wave band more suitable monitor marine oil spill; From the polarization mode analysis, VV polarization compares HH, the HV polarization more suitable monitor marine oil spill; From incidence angle analysis, when computation oil spill and sea water marginal value, after tests many times: Located at the far incidence angle's doubtful oil spill, separates not easily with the sea water; The relatively near incidence angle's doubtful oil spill, separates easily with the sea water. ALOS the PALSAR phantom's incidence angle scope approximately between 23 degrees to 43 degrees, the COSMO-SlyMed incidence angle scope between 32 degrees to 35 degrees, the incidence angle scope which separates the sea water and the oil spill is approximately easy 23 degrees to 35 degrees.
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