基于DMSP/OLS夜间灯光数据的城市人口估算——以湖北省各县市为例

Urban Population Estimation Based on The DMSP/OLS Night-time Satellite Data——A Case of Hubei Province

城市人口数据是了解城市发展的重要因素,对研究城市环境等方面也有重要意义。随着GIS和遥感技术的发展,利用大面积、多时相的遥感数据研究城市人口的技术也日渐成熟。本文借助遥感数据和GIS手段分析2000年湖北省各县市DMSP/OLS卫星的夜间灯光数据亮度值与各县市城镇人口之间的关系,建立相应的模型模拟湖北省2002年76个县市城区人口,其结果预测吻合度为98.94%,平均相对误差为10.95%,说明利用夜间灯光数据对城镇人口做短期的预测可以达到很好的效果。

The population data of urban are important to understand the urban development, and also significant to research the urban environment. With the development of GIS and RS, the technique of deriving the urban population with large area and multi-times remote sensing data is increasingly mature. Through the analysis of the relationship between the DMSP / OLS night-time satellite sensor data and the population of each county of Hubei province, this paper established the corresponding linear model and adopted the model to estimate the 76 urban population of the year 2002. The results showed that the prediction goodness of fit were 98.94% and the average relative error was 10. 95%. It also showed that the DMSP / OLS night-time satellite sensor data could be well used to short-term estimate the urban population.