published:2020-03-11
intane optics developed the second-generation earth terminal for the exploration of high-orbit satellite-earth two-way high-speed laser communication technology, and independently fulfilled all the assignments regarding design, manufacturing, installation, adjustment and testing of all systems, including the optoelectronic computing and adaptive optical system; intane has made outstanding contributions to the first two-way high-speed laser communication between geostationary orbit satellite and the earth in china. in addition, intane optics provided all special optical inspection equipment and space-based optical systems.
the second-generation synchronous orbit laser communication terminal delivered to harbin institute of technology in march 2017 contributed to the successful two-way 5g video transmission between the synchronous orbit (36000km) and the ground laser communication station on april 28 of the same year;
it solved the problem of high-precision acquisition between satellite and the earth at an altitude of nearly 40,000 kilometers from the earth, having overcome the effects of satellite movements, platform jitter and other complex spatial environmental factors, and realized fast lockup and stable tracking of beam signals.
for the first time in the world, the laser communication at data rates of 600 mbps, 1.25 gbps, 2.5 gbps, and 5 gbps between high-orbit satellite and the earth was realized with excellent quality.
a number of independent innovations and advanced technologies were employed; the first wavelength-division multiplexing laser communication technology was used between the satellite and the earth; several key technologies such as high-speed laser information reception and forwarding, and the atmospheric impact compensation for long-distance high-speed laser communication were demonstrated.
the performance of the earth terminal for satellite-to-earth laser communication met the requirements with stable operation and normal receipt of data, which guarantees the successful test of satellite-earth laser link.
in august 2017, the state administration of science , technology and industry for national defense called up 11 experts (including 8 academicians, of whom 2 were winners of the national top science and technology award) to form an expert group for acceptance review; in the end, all the experts believed that the performance of the earth terminal for satellite-to-earth laser communication met the requirements with stable operation and normal receipt of data, which guarantees the successful test of satellite-earth laser link. the first prize of national defense science and technology progress 2018 was presented to "the high-orbit satellite-to-earth two-way high-speed laser communication system technology".
