无线电工程2024，Vol.54Issue(6)：1481-1488,8.DOI:10.3969/j.issn.1003-3106.2024.06.017
一种面向区域尺度的DMSP/OLS夜间灯光影像校正方法
A Correction Method of DMSP/OLS Nighttime Light Images in Regional Scale
摘要
Abstract
A desaturation method based on unsaturated pixels correction is proposed to address the problem of large number of saturated pixels in Defense Meteorological Satellite Program(DMSP)/Operational Linescan System(OLS)nighttime light images.In Beijing,the unsaturated light pixels in the image are extracted and fitting to the corresponding pixels in the reference image as the research objects,and the reference image is corrected to the scale of each image by a power function regression model to obtain the true light values of saturated pixels.The mutual correction model is established to uniformly correct the images to the scale of the reference image to make the images comparable.The continuity correction is used to obtain the time series image from 1992 to 2013 of Beijing.The results show that the correction method can improve the saturation phenomenon of DMSP/OLS image pixels,and the goodness of fit with GDP and population is 0.716 and 0.812,respectively,which has significantly improved the correlation compared with the invariant target area correction method(GDP:R2=0.613;population:R2=0.713).This correction method can eliminate the differences of regions,improve the data quality of nighttime light images,and form a better quality image sequence dataset.关键词
美国国防气象卫星计划/线性扫描业务系统/夜间灯光/连续性/校正方法/GDPKey words
DMSP/OLS/nighttime light/continuity/correction method/GDP分类
天文与地球科学引用本文复制引用
朱军桃,李海林,兰荣添,任招财,陈荣生..一种面向区域尺度的DMSP/OLS夜间灯光影像校正方法[J].无线电工程,2024,54(6):1481-1488,8.基金项目
国家自然科学基金(41461089)National Natural Science Foundation of China(41461089) （41461089）
