本文選題：遙感影像　切入點(diǎn)：地形校正　出處：《遙感技術(shù)與應(yīng)用》2017年04期 　論文類型：期刊論文

【摘要】：以甘肅省蘭州市東南部的興隆山地區(qū)為例,使用Landsat 8 OLI遙感影像,對(duì)研究區(qū)影像的各個(gè)波段分別進(jìn)行余弦校正、C校正和改進(jìn)型Minnaert校正,通過(guò)實(shí)地測(cè)量和對(duì)比影像的統(tǒng)計(jì)特征兩種方法,對(duì)校正結(jié)果進(jìn)行對(duì)比分析。結(jié)果發(fā)現(xiàn):在可見光和短波紅外波段,余弦模型的校正效果比較理想,C模型存在過(guò)度校正現(xiàn)象;而在近紅外波段,使用C模型能夠得到比較好的校正結(jié)果,余弦模型的過(guò)校正現(xiàn)象嚴(yán)重;從7個(gè)波段的整體校正效果來(lái)看,改進(jìn)型Minnaert模型的校正效果較為理想。從校正前后不同地形特征的反射率變化可以看出,幾種模型在小坡度的校正效果基本近似;模型的過(guò)校正現(xiàn)象主要發(fā)生在陰坡地區(qū),而且隨著坡度的增加,陰坡的過(guò)校正現(xiàn)象更加明顯;改進(jìn)型Minnaert模型的整體過(guò)校正現(xiàn)象較少,比較適合在坡度較大、地形較復(fù)雜地區(qū)的校正。
[Abstract]:Taking the Xinglong Mountain area in the southeast of Lanzhou City of Gansu Province as an example, using Landsat 8 OLI remote sensing image, the cosine correction / C correction and the modified Minnaert correction are carried out for each band of the image in the study area, respectively. The correction results are compared and analyzed by two methods of field measurement and contrast image statistical characteristics. The results show that the correction effect of cosine model is better than that of C model in visible light and short wave infrared band. But in the near infrared band, using C model can get better correction results, cosine model overcorrection phenomenon is serious; from the overall correction effect of seven bands, From the reflectivity change of different topographic features before and after correction, it can be seen that the correction effect of several models in small slope is approximate, the overcorrection of model mainly occurs in the overcorrection area of shady slope. With the increase of slope, overcorrection of shady slope becomes more obvious, and the whole overcorrection of modified Minnaert model is less, which is more suitable for correction in areas with larger slope and more complicated terrain.
【作者單位】： 蘭州大學(xué)資源環(huán)境學(xué)院;蘭州大學(xué)西部環(huán)境教育部重點(diǎn)實(shí)驗(yàn)室;北京航天宏圖信息技術(shù)股份有限公司;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(41471163);國(guó)家自然科學(xué)基金重點(diǎn)項(xiàng)目(41530752) 國(guó)家基礎(chǔ)科學(xué)人才培養(yǎng)基金科研訓(xùn)練及科研能力提高項(xiàng)目(J1210065) 中央高校優(yōu)秀研究生創(chuàng)新項(xiàng)目(lzujbky-2016-247)
【分類號(hào)】：TP751

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本文編號(hào)：1600592