Press

[JSTA 2024. 2. 29.]

As the limitations of conventional radio communications between satellites and the ground become apparent, various experiments are being conducted around the world to overcome them with space laser communication. In this study, we address the development of our own optical communications terminal (OCT) and optical ground station (OGS) and the experiments of free-space optical communication (FSOC) using them. Using a 30 mm-diameter OCT and a 250 mm-diameter portable OGS telescope, as well as commercial 10 Gbps SFP+ modules and media converters, we successfully transmitted and received 4K high-definition multimedia interface (HDMI) signals through 1,550 nm optical laser beam. The transmission and reception distances of the experiment were 3, 9, and 20 km, respectively, and the received signal strength at each distance was +6.1, –2.8, and –10.9 dBm, respectively. It was demonstrated that the 4K HDMI video lasted for over 10 minutes.

[Money Today 2023. 11. 21.]

Spacebeam's LAB near Osong Station demonstrated real-time drone video transmission using laser communication, a technology 100 times faster than radio waves. The successful test showcased potential applications in maritime surveillance and disaster response, highlighting the advantages of laser communication in terms of speed, bandwidth, and cost. The company plans to develop the platform for space optical communication in 2024.

[Money Today 2023. 8. 8.]

Spacebeam and Borsys, space optical communication startups, successfully demonstrated real-time drone video transmission using wireless optical communication, with the drone sending IR laser signal and optical telescope receiving it. This breakthrough technology, employing laser frequencies over 1000 times higher than RF, is seen as a significant advancement for space-to-ground communication, expanding the scope of the domestic space industry.