"Tianqin 2" will verify key technologies of next-generation gravity satellites
Recently, dozens of domestic space science experts gathered in Guangzhou to discuss the medium and long-term space science of the Ministry of Education and the frontier topics of the 14th Five-Year Plan.
At the meeting, China’s autonomous space gravitational wave detection program, the Tianqin project, received much attention. Its ongoing "Tianqin 2" satellite project will go to the sky to verify a number of key technologies for space gravitational wave detection, including the next generation of gravity. Key satellite technology.
Professor Ye Xianji from the Tianqin Center of Sun Yat-sen University introduced the progress of the "Tianqin-2" technical test satellite at the meeting. He pointed out that one of the core technologies that the "Tianqin-2" satellite will verify in orbit-inter-satellite laser interferometry is the key technology for the next generation of gravity satellites in the world.
"In this regard, we are on the same starting line as Meade. Everyone is speeding up the conquest of the next-generation gravity satellite technology and competing for the leading position of the next-generation gravity satellite." Academician Xu Houze of the Chinese Academy of Sciences said, hoping that the "Tianqin 2" will advance smoothly and realize China The autonomy, leadership and safety of gravity satellite technology.
Gravity satellites are of great strategic significance to the national economy and people's livelihood. Zhong Min, a researcher at the Institute of Precision Measurement Science and Technology Innovation of the Chinese Academy of Sciences, said that the experimental data of the "Tianqin-2" satellite using inter-satellite laser interferometry technology can be used to help establish a high-precision, high-temporal-resolution global gravity field model. It can serve the fields of geodesy, geophysics, national defense and security, and help cope with global climate change, disaster prevention and mitigation and other challenges faced by mankind.
According to experts from the Tianqin Center of Sun Yat-sen University, breakthroughs have been made in the main key technologies of the "Tianqin-2" technical test satellite, and the technical foundation and talent team are in place.
Zhang Lihua, researcher of Aerospace Dongfanghong Satellite Co., Ltd. and chief designer of "Tianqin-1", said that the technical verification mission of "Tianqin-1" satellite has been completed, and the results exceeded expectations. We look forward to the "Tianqin-2" technical test satellite. Full verification of high-precision inter-satellite laser interferometry technology will be another major technological breakthrough in the entire Tianqin Science Program, and it is also expected to achieve innovative results in the application of high-precision gravity fields.
The Tianqin project is China’s independent space gravitational wave detection program. Its technical route includes four stages of "0123". Finally, 3 satellites will be deployed in an orbit about 100,000 kilometers from the earth to build a space for detecting gravitational waves. observatory. "Tianqin 2" was jointly developed by Sun Yat-Sen University, Huazhong University of Science and Technology, Aerospace Dongfanghong Satellite Co., Ltd., etc. It is the third step "2" of the entire plan, and it is also the key technology test verification satellite of the second phase of the entire plan.
Our reporter Long Yuemei