期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2005
卷号：XXXVI-8/W27
出版社：Copernicus Publications
摘要：The Defense Meteorological Satellite Program (DMSP) Operational Linescan System (OLS) has a unique capability to collect low- light imaging data of the earth at night. The OLS and its predecessors have collected this style of data on a nightly global basis since 1972. The digital archive of OLS data extends back to 1992. Over the years several global nighttime lights products have been generated. NGDC has now produced a set of global cloud-free nighttime lights products, specifically processed for the detection of changes in lighting emitted by human settlements, spanning 1992-93 to 2003. While OLS data leave much to be desired for urban remote sensing (coarse spatial resolution - 2.7 km ground sample distance, limited dynamic range - 6 bit quantitization and no on- board calibration) significant changes in lighting can be observed in the change pair: rings of growth in lighting surround many urban centers, suites of linear features found in countries such as United Arab Emirates and China, and the contraction of lighting across much of the former Soviet Union. A major issue affecting the use of the time series in change detection are the differences between the OLS sensors and declines in sensor throughput over time. NGDC plans to address the intercalibration of the products through empirical approaches, such as intercomparison of products generated by two or more satellites for the same set of nights and the use of sets of lights deemed to have been stable over time. The nighttime lights products may be useful in modeling the spatial distribution of population density, distributed carbon emissions, and economic activity
关键词：Nighttime lights; change detection; sprawl development
