ZY-3 Satellites

3 Satellites, Tri-stereoscopic Mapping, HR, Optical

ZY-3 (short for Ziyuan-3) constellation is composed of three tri-camera satellites. ZY-3 was launched on January 9, 2012, its panchromatic resolution of nadir-, front- and rear-camera are 2.1 m, 3.5 m and 3.5 m, and the multispectral resolution is 5.8 m. The imaging nadir swath width is wider than 50 km, and stereo imaging nadir swath width is wider than 45 km. It has been in operation over 8 years. ZY-3 02 and ZY-3 03 was successively launched on May 30, 2016 and July 25, 2021. When the three work as a constellation, they shorten the repeat circle from 59 days to 15 days, and enable 3 times imaging swath width. The main mission of the constellation is to collecting tri-stereoscopic and multispectral imagery applied in 1:50,000 scale mapping, 1:25,000 scale or higher updating and correcting maps. The products includes imagery data, DSM, DEM, DLG, DRG, and customized products according to user’s requirements.