Development Status of Microsatellite

As early as 1995, Chinese Academy of Sciences proposed to independently develop China's first low-orbit data communication satellite with a weight less than 100 kg and its communication system according to the requirements of national future satellite-ground communication technology development. 1996, Institute of Microsystems, Chinese Academy of Sciences submitted a report on the development of LEO data communication satellite and its communication system. At the end of 1997, the Chinese Academy of Sciences officially approved the project "Store-and-Forward Communication Small Satellite and Its Application System", and prepared to develop a small satellite "Innovation 1" with two-way data communication. The research and development tasks are mainly undertaken by Shanghai Microsystems Research Institute and Shanghai Institute of Technical Physics. The advancement of the institutional mechanism reform of Shanghai Microsystems, which entered the knowledge innovation project, laid a solid scientific and technological foundation for the development of "Innovation No.1". On June 5438+1October 2 1 in 2003, the store-and-forward communication satellite, a major project of knowledge innovation of Chinese Academy of Sciences, was successfully launched into orbit. The store-and-forward operation mode of small satellites realizes global non-real-time low-orbit two-way data communication. In order to improve anti-interference and enhance confidentiality, spread spectrum communication technology is adopted in satellite communication load. The satellite is a hexahedral structure with solar cells, and the attitude control scheme of gravity gradient magnetizing torque device and micro-power wheel is adopted. The total weight of the satellite is more than 80 kilograms, and the average power consumption is 30 watts. This is the first micro-satellite independently developed by China, which is below 100kg, and it is also the first generation of low-orbit data communication micro-satellite in China. It has played an important role in the research and development of micro-satellites in China and opened up a new situation in the development of micro-satellites in China.

In September, 2008, Shenzhou VII manned spacecraft flew into space again, which was the first space satellite developed by China on the basis of inheriting the mature technology of Innovation No.1 microsatellite of Chinese Academy of Sciences. Subsequently, Innovation 1 (02) was successfully launched in June of the same year165438+1October.

201May1October 15: 06, China successfully sent the remote sensing satellite No.14 into space by the Long March 4 B carrier rocket at Taiyuan Satellite Launch Center. At the same time, the successful launch of Tiantuo-1 satellite indicates that China has made an important breakthrough in the field of microsatellites.

In addition, there are many universities, companies and microsatellites involved in R&D in China, such as Tsinghua Aerospace No.1 microsatellite jointly developed by Tsinghua University and China Aerospace Electromechanical Group Corporation, Experiment No.1 and Experiment No.3 satellites jointly developed by China Satellite, Shenzhen Aerospace Science and Technology Innovation Research Institute and Harbin Institute of Technology National University Science Park Co., Ltd., Pi Xing No.1 A of Zhejiang University and Pi Xing No.1 A of Nanjing University of Aeronautics and Astronautics.