{"id":"30b23ed5-44d0-4b6c-b32a-c74e868a7b40","title":"中国1km类DMSP-OLS夜间灯光数据集(1992-2020)","title_en":"China 1km DMSP-OLS Night Light Data Set (1992-2020)","serial":"","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明数据来源和数据作者。对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"1992至2013年数据命名方式为：DMSPyyyy.tif\n2013至2021年数据命名方式为：DMSP-likeyyyy.tif","description":"该数据集主要范围中国大陆地区长时序夜间灯光信息。数据存储格式为GeoTIFF，空间分辨率为1km。处理方法是模拟NPP-VIIRS数据与DMSP-OLS数据之间的关系，将2013-2020年的NPP-VIIRS模拟2013-2020年的DMSP-OLS数据，从而得到1992-2020年类DMSP-OLS数据集。首先利用核密度法将NPP-VIIRS数据的空间分率重采样为1-km，基于对数转换后的重采样NPP-VIIRS数据与DMSP-OLS数据之间的“S”曲线关系，利用Sigmoid函数将对数NPP-VIIRS数据转换为模拟DMSP-OLS数据，将1992-2013年校准的DMSP-OLS数据与2013-2020年的模拟DMSP-OLS数据拼接为1992-2020年的类DMSP-OLS数据","doi":"https://doi.org/10.7910/DVN/GIYGJU","projection":"Albers","language":"zh","share_type":"online","east":130.71,"west":74.15,"south":17.97,"north":54.47,"scale":null,"crs":null,"filesize":40.0,"share_policy":"a","ts_created":"2022-09-30T14:37:12.861193+08:00","doi_type":"拥有自主知识产权","ts_updated":"2022-10-17T19:31:10.686667+08:00","time_description":"1992-2020","datas_group":3,"time_description_en":"1992-2020","data_format":null,"project":[10],"specials":[],"cite":null,"review_status":5,"review_invite":[],"review_editor":null,"data_sources":null,"temporal_resolution":"Yearly","spatial_resolution":"100m - 1km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"30b23ed5-44d0-4b6c-b32a-c74e868a7b40","three_pole":null,"third_pole":null},"username":"郎芹","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":338}