The reporter learned from China Aerospace Sanjiang Group Co., Ltd. that "Xingyun-2" 01 and 02 have recently achieved two-way communication with a complete link establishment process and stable telemetry status. The laser communication payload technology has been verified, and China's satellite Internet of Things constellation has achieved a new breakthrough in inter-satellite laser communication. Since the two satellites carried out in-orbit technical tests, their core technologies have been fully verified.
According to reports, inter-satellite laser communication is a communication method that uses laser beams to transmit images, voices, signals and other information in space. It has high transmission rate, strong anti-interference ability, small system terminal size, light weight, low power consumption, etc. The advantage can greatly reduce the dependence of the satellite constellation system on the ground network, thereby reducing the number and construction cost of ground stations, expanding the coverage area, and realizing global measurement and control.
"Xingyun II" 01 and 02 satellites have a laser communication payload of 6.5 kg and 80 watts of power consumption in orbit. "Xingyun II" 01 and 02 are the first satellites in a series of projects, which are controlled by a subsidiary of China Aerospace Sanjiang Group Co., Ltd. They were successfully launched into orbit on May 12, 2020, and a series of in-orbit technologies were launched immediately. Verification and industry demonstration application test.
Currently, inter-satellite laser link technology has become a key technology for the development of global satellite communication systems. Xingyun has developed the smallest inter-satellite laser communication payload in China, and has achieved a new breakthrough in laser communication for the domestic satellite Internet of Things constellation.