Journal of Applied Sciences ›› 2019, Vol. 37 ›› Issue (1): 99-111.doi: 10.3969/j.issn.0255-8297.2019.01.010

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Comparison of Radiation Intensity and Estimation of Electric Power Consumption between DMSP/OLS and VIIRS Nighttime Light Images

QIU Ya-qian1, XUE Xiang-yu1, HAN Wen-jun3, CHEN Xiao-ling1, LI Xi1,2   

  1. 1. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China;
    2. Collaborative Innovation Center of Geospatial Technology, Wuhan University, Wuhan 430079, China;
    3. State Grid Economic and Technological Research Institute, Beijing 100052, China
  • Received:2018-01-09 Revised:2018-03-09 Online:2019-01-31 Published:2019-01-31

Abstract:

As the acquisition time of nighttime light image of defense meteorological satellite program/operational linescan system (DMSP/OLS) and visible infrared imaging radiometer suite (VⅡRS) is different, nighttime lights are different at different times in the same area. In view of the difference, the ratio of two kinds of NTL mean values is taken as the measurement index to create light difference index (LDI). In this paper, we explore the consistency and difference of the NTL at different time in the same area, and analyze the causes of the differences. Meanwhile, the capabilities of DMSP/OLS and VⅡRS are compared for predicting electricity power consumption (EPC) at provincial level in China. The results show that NTL behaves some time-consistency and time-difference. There is a good correlation between two kinds of NTL images, and the higher nighttime light mean value of DMSP/OLS, the smaller the light difference. The difference is related to the regional economic development. Undeveloped areas are more likely to have great differences. In the forecast of electricity power consumption (EPC), VⅡRS is more relevant to EPC and superior in estimating EPC than DMSP/OLS.

Key words: light difference index, time difference, electricity power consumption (EPC), nighttime light image

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