InterSymbol Interference
InterSymbol Interference (ISI) is a kind of distortion that occurs when one or more symbols (pulses in digital baseband transmission) interfere…
Read MoreGEODSS 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…
Read MoreFSO Underwater
Free-space optical communications are typically performed in free space, such as air and vacuum, due to the high transmissivity of both…
Read MorePhased Arrays
Overview A phased array is an array of antennas that can have their beam path steered without physically moving the antennas.…
Read MoreModulation Schemes
The following is a list of modulation schemes used in FSO and satcom along with a descriptor of each scheme and…
Read MoreElastic Optical Networks (EONs)
Elastic optical networks (EONs) are an application of wavelength division multiplexing (WDM) that operates using very small spacings between transmittable frequencies,…
Read MoreOptical Wireless Communications (OWC)
Overview Optical wireless communications (OWC) is an umbrella term describing any optical communication technology that does not require a hard-wired link…
Read MoreAtmospheric Interference
[read more and participate on our wiki article here: https://wiki.pathfinderdigital.com/wiki/atmospheric-interference/ ] Overview Atmosphere is the transmission medium for an FSO link. Like…
Read MoreAdaptive Modulation
Overview Adaptive modulation is a technique used to modify the modulation of a signal based on the characteristics of the channel…
Read MoreMobile FSO Platforms
Free Space Optics (FSO) communication is not always stationary. Think of an on-the-ground ground-to-space communication station, such as the ones at…
Read More