TY - Data T1 - Heihe River eco hydrological remote sensing experiment: resource 3 (ZY-3) remote sensing data set (2012) A1 - Wang shuguo DO - 10.12072/ncdc.nieer.db2999.2023 PY - 2021 DA - 2021-08-27 PB - National Cryosphere Desert Data Center AB - Resource 3 (ZY-3) satellite is China's first independent civil high-resolution three-dimensional mapping satellite. Through three-dimensional observation, it can measure and produce 1:50000 scale topographic maps and provide services for land and resources, agriculture, forestry and other fields. The satellite was launched on January 9, 2012. The satellite adopts the Resource-2 satellite platform with improved adaptability and is equipped with four cameras:( 1) 1 front view panchromatic TDI CCD camera with ground resolution better than 2.5m( 2) 2 sets of front view and back view panchromatic TDI CCD cameras with ground resolution better than 4m( 3) 1 front view multispectral camera with ground resolution better than 10m. The satellite has the function of pendulum measurement, which can realize seamless image coverage for areas within 84 degrees of the earth's north-south latitude, and realize image coverage for China's territory and the world every 59 days. Under special circumstances, it can revisit and shoot the same place within 5 days In 2012, 44 ZY-3 images were obtained. The coverage covers the whole Heihe River Basin, and the acquisition time (Beijing time, there are multiple scene data every day) is: 2012-08-25, 2012-09-03, 2012-09-08, 2012-09-13, 2012-09-18, 2012-09-23, 2012-09-28, 2012-10-03, 2012-10-13, 2012-10-18, 2012-10-22, 2012-11-01, 2012-11-11, 2012-11-21The acquired data is in multispectral mode, with a resolution of 1 m and a product level of L1.The ZY-3 remote sensing data set of the joint experiment of comprehensive remote sensing observation of ecological hydrological process in Heihe River Basin was obtained through purchase DB - NCDC UR - http://www.ncdc.ac.cn/portal/metadata/23de08b7-ba70-4e90-afe2-0e4d61eda4a1 ER -