Landsat8-OLI深藍波段用于近海泥沙水質(zhì)監(jiān)測的效果
發(fā)布時間:2018-06-28 16:40
本文選題:Landsat + 深藍波段 ; 參考:《遼寧工程技術(shù)大學學報(自然科學版)》2016年12期
【摘要】:Landsat8衛(wèi)星的OLI傳感器新增的穿透力強的深藍波段,為近海水質(zhì)監(jiān)測提供了重要的數(shù)據(jù)資料.然而,深藍波段用于近海泥沙水質(zhì)監(jiān)測的效果有待驗證.本研究選取了渤海灣近海海域的一景少量云覆蓋的Landsat8-OLI多光譜影像,經(jīng)過裁剪得到海岸帶和近海區(qū)域.利用不加入深藍波段的六個波段和加入深藍波段的七個波段對近海泥沙水體分類效果和精度進行對比研究.研究結(jié)果表明:深藍波段參與分類對于中度泥沙海水的分類精度有顯著提高,比深藍波段未參與分類的中度泥沙海水的分類精度提高約12個百分點;深藍波段參與分類對于泥沙海灘和輕度泥沙海水的制圖精度沒有顯著影響.
[Abstract]:Landsat8 Oli sensor provides important data for offshore water quality monitoring by adding a dark blue band with strong penetrability. However, the effect of the deep blue band used in the monitoring of offshore sediment water quality needs to be verified. In this study, Landsat8-OLI multispectral images of a small amount of cloud coverage in the offshore waters of Bohai Bay were selected, and the coastal zone and offshore area were obtained by tailoring. The classification effect and accuracy of offshore sediment water were compared between six bands without deep blue band and seven bands with deep blue band. The results show that the classification accuracy of medium sediment sea water in the dark blue band is improved significantly, which is about 12 percentage points higher than that of the medium sediment sea water which is not classified in the deep blue band. The participation of dark blue band in classification has no significant effect on the mapping accuracy of sediment beach and light sediment sea water.
【作者單位】: 遼寧工程技術(shù)大學測繪與地理科學學院;中國測繪科學研究院地理國情監(jiān)測研究中心;
【基金】:國家自然科學基金項目(41501192) 中國測繪科學研究院基本業(yè)務(wù)費項目(7771507)
【分類號】:P715.6
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本文編號:2078660
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