Inter-Satellite and Satellite-Ground Laser Communication Links Based on Homodyne BPSK

摘要

Today, coherent optical inter-satellite links are operational in LEO-LEO constellations for more than two years. With data transmitted error free at rate of 5.625 Gbps and links established within a few seconds they prove a performance well suited for commercial applications. For the first time coherent LEO-to-ground links have been built up, too. They allow to investigate the atmosphere's impact on optical space-to-ground links for later optimization of optical ground stations.