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.
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