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ACCURACY ASSESSMENT OF CONTOUR INTERPOLATION FROM 1:50,000 TOPOGRAPHICAL MAPS AND SRTM DATA FOR 1:25,000 TOPOGRAPHICAL MAPPING
Topographic mapping Map revision Shuttle Radar Topographic Mission data Contour interpolation Contour accuracy assessment
2016/1/3
One major problem engendered by poverty in less-developed countries is that of inability of such countries to carry out fresh medium-scale topographical mapping at regular time intervals usingexpensiv...
1:25.000 Scaled Photogrammetric Map Production System
Photogrammetry DEM Orthophoto Production System Automatic Feature Extraction
2015/12/16
By applying the latest developments occurring in photogrammetry to the map production systems, important reductions in map production costs are obtained. For instance, by starting to use digital camer...
中国科学院新疆天文台南山25米射电望远镜2009年工作再创佳绩
射电望远镜；脉冲星；到达时间
2021/11/16
2009年，中国科学院新疆天文台南山基地25米射电望远镜完成了“脉冲星到达时间”、“6CM巡天”、“IDV”、“分子谱线”、“暂线源”、“木星”、“磁星”等课题的单天线观测及EVN网、NASA、E－VLBI、中国探月和日本探月、火星观测等VLBI的联测，累计工作天数341天，天线运行时间7379小时，有效观测时间6758小时，系统维护时间567小时，其中有效观测时间再创历史新高，其他几项数据和最好...
Satellite Image Maps of Warsaw in the Scale 1:25,000
Satellite Image Maps Warsaw the Scale 1:25,000
2014/4/15
Satellite Image Maps of Warsaw in the Scale 1:25,000。