Low-orbit satellite laser communication test verification finished for HY-2


Intane Optics has since 2007 worked with Harbin Institute of Technology's key national defense experiment in space optical communications to develop a space laser communication terminal. The first-generation 600mm-aperture earth terminal for laser communication and the special detection equipment for optical system delivered met the intended indexes, and successfully passed the first satellite-to-earth high-speed laser communication experiment on November 24, 2011. The products met the customer-defined individual indicators and achieved historic breakthroughs in terms of system wavefront accuracy, multi-channel optical axis parallelism, control tracking accuracy, equipment stability, etc. According to the expert committee "China's first satellite-to-earth laser communication experiment is successfully conducted, and all the assignments of experimental research are successfully fulfilled."

The HY-2 satellite-to-earth laser communication marks the first successful satellite-to-earth laser communication link data transmission test in China. At 6 a.m. on October 25, 2011, the satellite-to-earth laser link acquisition and tracking test was passed, representing the first high-precision, high-stability and two-way rapid acquisition and full-link stable tracking in China. In the experiment, the satellites in high-speed movement at a rate of more than 20,000 kilometers per hour and the optical communication ground station were involved in a two-way dynamic beam lock tracking within the distance of nearly 2,000 kilometers with a precision that was much higher than the relevance between "needle tip and wheatgrass"; the satellite-to-earth high-speed data transmission test was passed, when the single-channel data rate reached 504Mbps. The first-generation low-orbit satellite laser communication earth terminal won the Grand Prize for National Defense Technology Invention 2013 and the First Prize for National Technology Invention 2014.

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