摘要
1995年Ridd提出VIS模型以来,城市不透水面便成为遥感应用领域中较为关注的问题。在城市遥感研究中,不透水面不仅仅是城市重要的物质组成,同时也对城市地表环境产生重要的影响。另一方面,随着遥感空间分辨率和光谱分辨率的提高,城市不透水面的提取在理论方法、技术路线等方面都得到了很大的提升。尤其是高光谱数据的发展,基于城市不透水面物质光谱信息的混合像元分解成为当前研究的热点。本文就城市不透水面在遥感应用领域的历史发展状况进行梳理和剖析,清晰化城市不透水面研究的状态,并介绍当前研究方向,为城市不透水面研究提供引玉之砖。主要讨论的内容包括:不透水面的内涵和物质组分研究、不透水面提取的技术方法进展、不透水面数据源/尺度变换等方面的进展以及不透水面研究的未来发展方向,尤其是基于高光谱数据的不透水面研究中的热点和存在的问题。
Remote sensing had considerable potential for providing accurate,up-to-data information in urban areas.Urban remote sensing was complicated,however,by very high spectral and spatial complexity.When the model of VIS was present in 1995 by Ridd,the imperious surface was being an important issue in urban remote sensing researches.This paper put the focus on the development and discussed the context of imperious surface until now.Considering all lot of researches of urban remote sensing,current and accurate information about urban composition was critical not only for urban planning,disaster response and improved environmental management,but for intension of urban expansion and so on.Now,using the un-mixing method to analyze the urban problems was a new view.Spectrally unique materials and the presence of spectrally ambiguous materials,such as dark shingles and asphalt roads further complicated analysis using the hyper-spectral remote sensing data.At the same time,as a result,urban environments exhibited a high dimensionality in spectral space.Lots of remote sensing techniques for urban imperious surface,as observed in previous studies,was developed.And high spatial and hyper-spectral remote sensing data were applied in past years.This paper discussed the evolution map and the importance of these researches in spatial and spectral information in which different models were used for different levels of complexity.On the other hand,making the status of the urban impervious surface and introducing the works in future were an important objective by using this paper.What the followed matters were included in this paper was that: the intension of imperious surface,the technology method which was used to obtain the imperious surface,the data which was used in application of imperious surface and the dimension change of imperious surface,at the same time,the development directions was discussed,and this paper emphasized the hot spots and problems of this research which was based on hyper-spectral remote sensing data.With an emphasis of summarizing the rationales,methods and implications of impervious surface application,this paper gave an attempt to provide further insights on theoretical and methodological foundations for our subsequent urban environment studies in the context of hyper-spectral.
出处
《云南地理环境研究》
2013年第2期57-64,共8页
Yunnan Geographic Environment Research
基金
国家自然科学基金(41201432)
关键词
城市不透水面
遥感
高光谱
进展
imperious surface
remote sensing
hyper-spectral
outlook