China successfully launched Tianyi 51 and 52 satellites

China News Service, Beijing, September 17 (Reporter Ma Shuaisha) At 10:40 on September 17, Beijing time, China used the Kuaizhou 11 Yao-3 carrier rocket at the Jiuquan Satellite Launch Center to successfully launch Tianyi 51 and 52 satellites. The satellites successfully entered the predetermined orbit, and the launch mission was a complete success.

Tianyi 51 and 52 are the world's first commercial medium-inclination InSAR (Interferometric Synthetic Aperture Radar) remote sensing satellites that have been successfully put into orbit. Different from traditional sun-synchronous orbit InSAR satellites, this group of satellites adopts a medium-inclination orbit design, focusing on high-frequency revisit monitoring in mid- and low-latitude areas, adapting to the monitoring needs of China and the countries co-building the "Belt and Road".

According to the satellite developer Tianyi Space, this group of satellites has achieved three core capabilities. The first is to achieve high-frequency revisits through medium-inclination orbits, solving the industry pain point of "slow revisits" of traditional InSAR, and compressing the target area interference revisit period from the current several days to one day, and the subsequent multi-satellite network can be further shortened to a few hours; the second is to observe at medium inclination angles Three-dimensional deformation inversion is realized under the system to solve the common problem of "inaccuracy" of north-south deformation in traditional InSAR. Third, multi-view collaborative imaging is used to eliminate observation blind spots in urban high-rise areas and mountains and deep valleys, solving the industry pain point of traditional InSAR's "incomplete view".

Relying on the above capabilities, satellites can serve in areas such as mountainous geological disaster monitoring, urban risk building identification, hydropower project inspections, and traffic trunk safety protection, establishing a monitoring system of "routine measurements once a day, and emergency response at any time" to provide near-real-time space-based observation support for safety monitoring in various industries.

The Kuaizhou 11 launch vehicle was developed by Kuaizhou Aerospace Technology Co., Ltd., with a carrying capacity of 1 ton in a 700-kilometer sun-synchronous orbit. It has the characteristics of high flight reliability, high orbit insertion accuracy, short preparation period, low support requirements, and low launch cost. This mission is the seventh flight of the Kuaizhou-11 carrier rocket.