Site Diversity

Overview Site diversity is a technique used to improve the reliability of satellite communications systems that have been limited by atmospheric…

Read More

Metamaterials

Overview Metamaterials are man-made materials that are designed to have electromagnetic properties that are not seen in nature. Unlike common compound…

Read More

Adjacent Satellite Interference

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

Read More

Free space laser telecommunication through fog

Overview One of the largest obstacles FSO communication faces is the ability to penetrate dense fog and other atmospheric turbulence. On 18 October…

Read More

OLSG

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…

Read More

High-Speed Train System

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

Read More

Quantum Experiments at Space Scale (QUESS)

Overview Quantum Experiments at Space Scale (QUESS) is an international project which aims to establish a quantum-encrypted European-Asian network by 2020,…

Read More

Saturation Flux Density (SFD)

Overview Saturation flux density (SFD) is a measure of how much power a signal must have to saturate a detector. Flux…

Read More

FSO Underwater

Overview Free-space optical communications are typically performed in free space, such as air and vacuum, due to the high transmissivity of…

Read More

Alleviation of Jamming in Free Space Optical Communication

Overview Most FSO communications systems operate at a limited range of distinct wavelengths (usually 1300 nm or 1550 nm) making them…

Read More