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On October 27, 2021, the "Kuaizhou-1A" Yao-5 solid launch vehicle was launched from the Jiuquan Satellite Launch Center, successfully sending the "Jilin-1" Gaofen 02F satellite into its predetermined orbit.
The "Jilin-1" Gaofen 02F satellite is a result of deep cooperation between the Aerospace Haiying Satellite Operation Division of China Aerospace Science and Industry Corporation (CASIC) and the Changshu Aerospace Haiying Satellite Application Collaborative Innovation Center in Jiangsu Province, along with Changguang Satellite Company.
The satellite features high resolution, wide swath, and high-speed data transmission capabilities. It can obtain high-definition remote sensing images with a panchromatic (black and white imagery) resolution better than 0.75 meters, a multispectral resolution better than 3 meters, and a swath width greater than 40 kilometers.
The "Jilin-1" Gaofen 02F satellite can rely on the Changshu satellite ground station to achieve satellite telemetry, tracking, and control (TT&C) and data transmission. Through the "Aerospace Nebula·Satellite Resource Sharing Service Platform," it can carry out satellite data value-added services, supporting satellite applications in natural resource surveys, ecological environment monitoring, urban comprehensive management, and disaster prevention and mitigation in Changshu City and the Yangtze River Delta region. At the same time, it will promote the rapid development of the satellite remote sensing big data industry.
In simple terms, the main function of an optical remote sensing satellite is to perform optical imaging (photography) of the ground. The "Jilin-1" Gaofen 02F satellite can obtain high-definition remote sensing images of various types, such as panchromatic and multispectral images, with a resolution of up to 0.75 meters in panchromatic mode. The "Jilin-1" Gaofen 02F is primarily used in professional fields. By utilizing the high-definition images returned by the satellite, one can observe the ground conditions and changes over a period of time.
Like most remote sensing satellites, the majority of optical remote sensing satellites operate in a Sun-synchronous orbit (SSO), passing over the same location at the same local time during each orbit. This allows for continuous observation of the same location, recording changes on the ground, and significantly improving the efficiency of tasks such as natural resource surveys, ecological environment monitoring, urban comprehensive management, and disaster prevention and mitigation.
Additionally, optical remote sensing satellites can also be used for military reconnaissance, aiding in the quick and accurate understanding of opponents' deployments and movements. They are a common type of military satellite.
Currently, with the rapid advancement of aerospace optical technology, Chinese civilian optical remote sensing satellites have entered the sub-meter resolution era. Satellites such as the "Jilin-1" optical remote sensing satellites are continuously enhancing the resolution of Chinese civilian optical remote sensing satellites.