测绘通报 ›› 2019, Vol. 0 ›› Issue (7): 127-131,159.doi: 10.13474/j.cnki.11-2246.2019.0234

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Correction of nighttime light images of DMSP/OLS in China

LU Xiu1,2,3, LI Jia1,2, DUAN Ping1,2, ZHANG Birong1,2, LI Chen1,2   

  1. 1. College of Tourism and Geographical Sciences of Yunnan Normal University, Kunming 650500, China;
    2. Key Laboratory of Remote Sensing of Resources and Environment of Yunnan Province, Kunming 650500, China;
    3. Key Laboratory of Virtual Geographic Environment, Nanjing Normal University, Ministry of Education, Nanjing 210023, China
  • Received:2019-01-31 Revised:2019-05-20 Online:2019-07-25 Published:2019-07-31

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Abstract: The nighttime light images acquired by the operational linescan system (OLS) equipped with the Defense Meteorological Satellite Program (DMSP) have strong photoelectric amplification capability, small storage capacity and can directly reflect human activities. It is applied to urbanization monitoring and social and economic factors estimation. However, each sensor that obtains these data sets has not been scaled on the star, there is a problem of pixel saturation, and these data obtained by the sensors lacks comparability and continuity from 1992 to 2013 and cannot be directly used for long-term sequences. The study therefore requires the correction of long-term sequence DMSP/OLS nighttime light images. The correction includes mutual correction, saturation correction, annual fusion, inter-annual correction, etc. among the various light images in China. And the rationality test of the corrected DMSP/OLS nighttime light images. The test results show that the calibration method is feasible.

Key words: DMSP/OLS, nighttime light images, images correction, China area, long-term sequences

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