China’s first ocean surveillance radar satellite constellation has been completed

2022-08-06 0 By

Wang Jiangbo is the satellite launch site.China successfully launched a 1-meter C-SAR satellite on a Long March-4C carrier rocket from jiuquan Satellite Launch Center at 7:47 am on April 7.The satellite is China’s second C-band multi-polarization synthetic aperture radar (SAR) service satellite, which can realize three-star networking operation with the first 1-meter C-SAR service satellite and gaofen-3 scientific experiment satellite in orbit. The satellite revisiting and coverage capacity has been significantly improved, marking the official completion of China’s first ocean surveillance radar satellite constellation.The 1-meter C-SAR satellite is an ocean satellite supported by the National Civil Space Infrastructure Development Plan and built under the auspices of the Ministry of Natural Resources. It consists of two satellites with the same performance index and can obtain multi-polarization, high resolution, large width and quantitative sea and land observation data.Compared with gaofen-3 satellite, it has been improved in many aspects such as imaging quality, detection efficiency and quantitative application.After complete three satellite network, compared with a single satellite, revisit time by an average 15 hours up to 5 hours, to the Marine environment monitoring and sea targets monitoring, natural disasters and production safety accident emergency monitoring, land use, observation of many elements such as the surface water with high aging, stable and satisfy the business application of quantitative remote sensing data.Under the organization of the Ministry of Natural Resources, the in-orbit test of the first 1-meter C-SAR operational satellite is progressing smoothly. The satellite platform and payload test, satellite data field calibration and ground processing have been completed, and the satellite status and image quality are good.Subsequently, the National Satellite Ocean Application Center of the Ministry of Natural Resources will work with relevant units to complete the in-orbit test of the two satellites, make every effort to ensure that the satellites are put into use on time, realize the operation of multi-satellite networking services, and effectively meet the application needs of Marine, territorial, emergency, ecological and environmental protection, water conservancy, agriculture, meteorology and other fields.