Overview The Japanese Aerospace Exploration Agency (JAXA) is Japan's national aerospace and space agency. It was formed on October 1st, 2003, as a merger of the Institute of Space and Astronautical ...

Overview Adjacent Satellite Interference (ASI) is a phenomenon that occurs when two or more satellite signals are received by a ground terminal (downlink ASI or dASI) or when two or more ground ...

Overview Free-space optical (FSO) communication systems are a non-fiber-optic based optical communication systems that aim to handle large amounts of data at a high bandwidth. The simplest example of ...

Overview Adaptive optics (AO) are optical devices or technologies used to correct wavefront distortions on a fast timescale (100 – 1kHz). Adaptive optics are different from active optics, which work o ...

Overview Adaptive modulation is a technique used to modify the modulation of a signal based on the characteristics of the channel between the transmitter and receiver. It can also be used by an end ...

Overview SOTA or Small Optical TrAnsponder is a JAXA research project carried aboard the SOCRATES satellite that was launched in 2014. Its primary purpose was communications tests with NICT ground ...

Overview Space Communications and Navigation (SCaN) is NASA's Program Office for space communications activities. SCaN has helped support over 100 missions which include tasks such as Earth ...

Overview Trains that have wireless communication capabilities, either for on-board customer use or transport communication services, typically operate in RF bands. With the emergence of FSO ...

Overview The Optical Link Study Group (OLSG) was formed by the Interagency Operations Advisory Group (IOAG) in November 2010.  The purpose of the OLSG was to determine if a business case existed for ...

Overview Weather conditions can alter whether an RF system or an FSO system is more viable for a partiular communication application at any point in time. RF systems have weaker performance in the ...