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terrain diffraction

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  • Olive Tree Lab Terrain — Contents 1 Overview 2 Calculation Methods 3 Version History 3.1 Version 1.2 3.2 Version 1.3 …   Wikipedia

  • Atmospheric diffraction — is manifested in the following principal ways:* Fourier optics is the bending of light rays in the atmosphere, which results in remarkable visual displays of astronomical objects, such as depictions on this page.* Radio wave diffraction is the… …   Wikipedia

  • ITU Terrain Model — The ITU Terrain Loss Model is a radio propagation model that provides a method to predict the median path loss for a telecommunication link. Developed on the basis of diffraction theory, this model predicts the path loss as a function of the… …   Wikipedia

  • Mars Science Laboratory — mission 2011 concept artwork Operator NASA Major contractors Boeing Lockheed Martin …   Wikipedia

  • PORTUAIRE (GÉNIE) — Le développement des échanges maritimes est lié tant à la recherche de nouveaux marchés qu’à celle de nouvelles sources d’approvisionnement, ainsi qu’à l’abaissement des prix de revient du transport grâce à l’apparition de nouvelles techniques;… …   Encyclopédie Universelle

  • Lockheed F-117 Nighthawk — F117 redirects here. For the F117 PW 100 turbofan engine, see Pratt Whitney PW2000. F 117 Nighthawk Role …   Wikipedia

  • Propagation des ondes radio — Les ondes radioélectriques ou ondes hertziennes sont des ondes électromagnétiques qui se propagent de deux façons : dans l espace libre (propagation rayonnée, autour de la Terre par exemple) dans des lignes (propagation guidée, dans un câble …   Wikipédia en Français

  • Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …   Universalium

  • ExoMars — Operator ESA, NASA Major contractors Thales Alenia Space and Astrium Mission type Orbiter, lander and rover Orbital insertion date 2017 and 2019 Launch date …   Wikipedia

  • Radio propagation — is a term used to explain how radio waves behave when they are transmitted, or are propagated from one point on the Earth to another. [ H. P. Westman et al, (ed), Reference Data for Radio Engineers, Fifth Edition , 1968, Howard W. Sams and Co.,… …   Wikipedia

  • Roadway noise — is the collective sound energy emanating from motor vehicles. In the USA it contributes more to environmental noise exposure [Senate Public Works Committee, Noise Pollution and Abatement Act of 1972, S. Rep. No. 1160, 92nd Cong. 2nd session] than …   Wikipedia