115Cover photoPortable optical ground station complet-ed in February 2020The station has a 35 cm telescope in-stalled, which is used for the optical an-tenna module. Satellite-terrestrial optical communications are sensitive to atmo-spheric conditions, so this station was developed for the purpose of realizing optical communications by selecting a location with favorable conditions.This research and development was carried out for the “Research and De-velopment of Quantum Cryptography Technologies in Satellite Communication (JPJ007462)” which is part of the Ministry of Internal Aairs and Communications' “Research and Development Project of Priority ICT Technology (JPMI00316).”Upper left figureBy using the world’s rst optical commu-nication device (SOTA) mounted on a 50 kg class microsatellite, the experiment directed a laser beam to the NICT optical ground station in Koganei, Tokyo and suc-ceeded in transmitting, via optical com-munication, images taken by the satellite’s camera.Special Issue for Space ICT2Innovative Space Communications Technology Seamlessly Connecting Land, Sea, Air, and SpaceWhat is this movement towards a new era of space-based ICT?KADOWAKI Naoto4Research Activities of Space Communications Laboratory in the 4th Medium- to Long-Term PlanTOYOSHIMA Morio6Integration of Satellite Communications into 5G / Beyond 5GMIURA Amane8Optimization of Global Communication Networks to Connect High-throughput and Numerous SatellitesTowards demonstration of Engineering Test Satellite-9 and network control technologyABE Yuma10Ultra-fast Laser Communications Will Open a New World of Possibilities for CubeSatsAlberto Carrasco-CasadoTOPICS12Experimental Success in Bidirectional Optical Communication Between the International Space Station and an NICT Optical Ground Station Receives the Good Design Award 2020 MUNEMASA Yasushi13NICT’s Challengers File 14 OKURA TakuyaLow-Profile Active Electronically Steered Array Antenna Enabling Internet Services in Small AircraftFEATURE1Greetings for 2021President of the National Institute of Information and Communications Technology TOKUDA Hideyuki, Ph.D.
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