本文選題：多源DEM　切入點(diǎn)：模擬河網(wǎng)　出處：《南水北調(diào)與水利科技》2016年02期 　論文類型：期刊論文

【摘要】：以常用HydroSHEDS void-filled DEM、SRTM、ASTER GDEM等五種DEM數(shù)據(jù)為研究對(duì)象,針對(duì)不同流域下墊面地貌形態(tài),采用不同的地貌特征分析方法以及將流域真實(shí)水系和模擬河網(wǎng)對(duì)比分析等方法,研究了多源DEM數(shù)據(jù)的質(zhì)量問(wèn)題。研究發(fā)現(xiàn)ASTER GDEM數(shù)據(jù)主要問(wèn)題是噪聲大,HydroSHEDS void-filled DEM和SRTM數(shù)據(jù)的主要問(wèn)題是存在模糊,噪聲、模糊均會(huì)降低數(shù)據(jù)的精度和提取的模擬河網(wǎng)的精度,但從整體上來(lái)看,三種DEM數(shù)據(jù)提取的模擬河網(wǎng)的質(zhì)量相當(dāng)。
[Abstract]:In this paper, five kinds of DEM data such as HydroSHEDS void-filled demer GDEM are used as the research objects. According to the topographic features of the underlying surface of different basins, different methods of geomorphological characteristics analysis and comparison analysis of real river system and simulated river network are adopted. The quality problem of multi-source DEM data is studied. It is found that the main problem of ASTER GDEM data is that the main problems of ASTER GDEM data are the existence of ambiguity and noise, which will reduce the precision of data and the precision of the extracted simulated river network. But on the whole, the quality of the simulated river network extracted from the three DEM data is equal.
【作者單位】： 河海大學(xué)水文水資源學(xué)院;國(guó)家水安全與水科學(xué)協(xié)同創(chuàng)新中心;河海大學(xué)水資源高效利用與工程安全國(guó)家工程研究中心;三峽水利樞紐梯級(jí)調(diào)度通信中心;
【基金】：水利部公益性行業(yè)科研專項(xiàng)項(xiàng)目(201401034) 國(guó)家自然科學(xué)基金重點(diǎn)項(xiàng)目(41030636;51420105014)~~
【分類號(hào)】：P931.1;P208
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本文編號(hào)：1574674