free-space propagation
101Optischer Richtfunk — Ein 8 Strahl FSO Gerät, das über etwa 2 km eine Datenrate von 1 Gb/s erreicht. Die große Linse in der Mitte gehört zum Empfänger, die kleineren außen zum Sender. Bei Optischem Richtfunk (englisch Free Space Optics, FSO), auch Optische… …
102Diffraction — Computer generated intensity pattern formed on a screen by diffraction from a square aperture …
103Laser — For other uses, see Laser (disambiguation). United States Air Force laser experiment …
104Photon — This article is about the elementary particle of light. For other uses, see Photon (disambiguation). Photon Photons emitted in a coherent beam from a laser Composition Elementary particle …
105Multiplexing — General multiplex scheme: the ν input lines channels are multiplexed into a single fast line. The demultiplexer receives the multiplexed data stream and extracts the original channels to be transferred …
106Digital Radio Mondiale — (abbreviated DRM; mondiale being Italian and French for worldwide ) is a set of digital audio broadcasting technologies designed to work over the bands currently used for AM broadcasting, particularly shortwave. DRM can fit more channels than AM …
107Introduction to special relativity — In physics, special relativity is a fundamental theory about space and time, developed by Albert Einstein in 1905 [ On the Electrodynamics of Moving Bodies . (fourmilab.ch web site): [http://www.fourmilab.ch/etexts/einstein/specrel/www/… …
108Vacuum permittivity — This article is about the electric constant. For the analogous magnetic constant, see vacuum permeability. For the ordinal in mathematics ε0, see epsilon naught. The physical constant ε0, commonly called the vacuum permittivity, permittivity of… …
109CONSERT — (COmet Nucleus Sounding Experiment by Radiowave Transmission) is a scientific experiment on board the European Space Agency s Rosetta mission, launched in 2004, which will provide information about the deep interior of the comet 67P/Churyumov… …
110Signals intelligence operational platforms by nation — This article is a subset article under the main article Signals intelligence, which addresses the unifying conceptual and technical factors and common technologies in this intelligence discipline. This article deals with current signals… …
