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Satellite-to-Ground Links (SGL)

A Satellite-to-Ground Link (SGL) describes the communication between a satellite and a ground station. If the ground station is transmitting the…

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Pulse Code Modulation (PCM)

Pulse Code Modulation (PCM) is a digital modulation technique used to convert analog information into a binary sequence. Each digit in…

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GLONASS

Originally designed by the Soviet Union for military communication purposes in the 1970’s, GLONASS is a satellite constellation that has been…

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Field Of View (FOV)

The Field Of View (FOV) is the actual observable area of an optical system like the human eye or a camera.…

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Conformal VLC Receivers with Photodetector Arrays

At the University of Central Florida (UCF), Pooya Nabavi and Murat Yuksei have designed and prototyped a wide field-of-view (FOV) optical…

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InterSymbol Interference

InterSymbol Interference (ISI) is a kind of distortion that occurs when one or more symbols (pulses in digital baseband transmission) interfere…

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GEODSS System

The Ground-Based Electro-Optical Deep Space Surveillance (GEODSS) System is a series of space-observing ground stations in the United States and the…

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FSO Underwater

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

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Phased Arrays

Overview A phased array is an array of antennas that can have their beam path steered without physically moving the antennas.…

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Modulation Schemes

The following is a list of modulation schemes used in FSO and satcom along with a descriptor of each scheme and…

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