DMSP/OLS数据应用研究综述

Overview of Researches Based on DMSP/OLS Nighttime Light Data

DMSP/OLS夜间灯光数据主要包括稳定灯光数据、辐射标定夜间灯光强度数据、非辐射标定夜间灯光强度数据3种产品。该数据产品具有获取容易、能够探测低强度灯光、不受光线阴影影响、方便为城市化强度及其时空分异分析提供条件等优点。目前,关于DMSP/OLS数据的研究成果已有很多,主要集中于城市发展研究、人类活动及效应研究、生态环境影响研究等方面,但对成果的系统归纳总结性研究却几乎没有。基于此,本文分析比较了现有DMSP/OLS数据研究实例,针对已有成果研究目的、技术方法以及方法优缺点等进行归纳总结,探索DMSP/OLS夜间灯光平均强度数据的应用前景。最后,总结了该数据的未来研究趋势:①对数据本身处理方法深入研究;②数据应用领域应进一步扩展;③DMSP/OLS数据与其他数据模型的集成研究应进一步深化;④将现有研究成果结合,进一步研究地理现象机制问题。

The stable lighttime data,the radiance-calibrated nighttime light intensity data and the non radiance-calibrated nighttime light intensity data are the three major products that have emerged in the field of the DMSP/OLS nighttime light data.It has several advantages,namely,easy acquisition of data,detection of low-intensity lights,unaffected by shadows,convenient provision of conditions for urbanization strength and its spatial-temporal difference analysis,and so on.At present,there are many research results on DMSP/OLS data,which mainly focus on city development,human activity and effect,eco-environment impact,but there are few studies on systematic results.This paper analyzed the existing researches on DMSP/OLS data,summarized and drew some conclusions based on the existing research results,the technical methods and the advantages and disadvantages of the methods,as well as explored the application prospect of DMSP/OLS nighttime light average intensity data.It predicted the future research trends of the data：（1） an in-depth study on processing methods of the data;（2） further expansion of data application;（3） the integrated study on DMSP/OLS data and other data models need to be deepened;（4） combine the existing research results,make further research on mechanism issues of geography phenomenon.