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The "Jilin-1" satellite constellation is an important optical remote sensing satellite constellation in China. It is constructed and operated by Chang Guang Satellite Technology Co., Ltd. The area it covers accumulates to 133 million square kilometers, making it the world's largest commercial remote sensing satellite constellation with sub-meter resolution.
Chang Guang Satellite Technology Co., Ltd. was established on December 1, 2014, focusing on the commercial aerospace field. It is China's first full-industry-chain commercial remote sensing satellite company that integrates satellite research and development, manufacturing, operation management, and remote sensing information services. It is also the first unicorn enterprise in Northeast China.
"Jilin-1" constellation's first phase consists of 138 high-performance optical remote sensing satellites, covering series such as video, high resolution, wide field, infrared, and multispectral.
On October 7, 2015, the "Jilin-1" constellation, independently developed by Chang Guang Satellite, was successfully launched in a "one rocket with four satellites" mode at the Jiuquan Satellite Launch Center, carried by the Long March 2D rocket, marking a pioneering step in China's commercial satellite applications.
On August 25, 2023, the Ceres-1 Yao 8 rocket successfully launched the HKUST-Xiongbin-1 satellite at the Jiuquan Satellite Launch Center. This event marked the successful operation of 108 "Jilin-1" satellites in orbit through 22 successful launches by Chang Guang Satellite. It is expected to achieve an in-orbit count of 300 satellites by 2025.
With the current in-orbit satellites of the "Jilin-1" constellation, it is estimated that the constellation can revisit any point worldwide 35-37 times per day, with the ability to cover the global area thrice a year and the national area nine times a year.
The Jilin satellite constellation primarily provides high-quality remote sensing information and product services for fields such as national security, geographic mapping, land planning, agricultural and forestry production, ecological protection, and smart cities.
The greatest advantage brought by Jilin-1 is the information advantage, allowing China to possess more diverse means of information reconnaissance without being confined to ordinary radars, thus enabling instant reconnaissance of specific movements at targeted locations, achieving information suppression.
In summary, the addition of Jilin-1 has significantly enhanced China's information strength. With continuous technological advancements, China will have more constellations in the future, which will then transform the information advantage into diplomatic and commercial advantages, thereby gaining greater strategic space. It is undoubtedly China's version of the "Starlink".