ionospheric system
71K-factor — Telecommunications= In telecommunication, the term k factor has the following meanings: 1. In tropospheric radio propagation, the ratio of the effective Earth radius to the actual Earth radius. Note: The k factor is approximately 4/3. 2. In… …
72Space weather — is the concept of changing environmental conditions in outer space. It is distinct from the concept of weather within a planetary atmosphere, and deals with phenomena involving ambient plasma, magnetic fields, radiation and other matter in space… …
73MT63 — is a digital for transmission in high noise situations. How it works By encoding the data to transmit (what you type on the keyboard) in a complex way, using 64 different modulated tones, the MT63 developer Pawel Jalocha SP9VRC has been able to… …
74FalconSAT — is the name of the United States Air Force Academy s small satellite engineering program. Satellites are designed, built, tested, and operated by Academy cadets. The project is administered by the USAFA Space Systems Research Center under the… …
75Kosmos 1 — This article is about the Soviet satellite. For the solar sail see Cosmos 1, for the rocket see Kosmos 1 Kosmos 1 Major contractors Yuzhnoye Bus DS 2 Mission type Ionospheric Technology Launch d …
76SID — aeronaut. abbr. Standard Instrument Departure astr. abbr. Sudden Ionospheric Disturbance comp. abbr. Syntax Improving Device phot. abbr Solubilization by Incipient Development abbr. Security IDentifier abbr. Signaling IDentifier abbr. Society for …
77Physical 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… …
78LORAN — (LOng Range Aid to Navigation) is a terrestrial radio navigation system using low frequency radio transmitters that uses multiple transmitters (multilateration) to determine location and/or speed of the receiver. The current version of LORAN in… …
79Callisto (moon) — Callisto View of the heavily cratered terrain of Callisto s anti Jovian hemisphere obtained in 2001 by NASA s Galileo spacecraft. The large impact structure Asgard is on the limb at upper right. The prominent rayed crater below and just right of… …
80DRTE Computer — The DRTE Computer was a transistorized computer built at the Defence Research Telecommunications Establishment (DRTE), part of the Canadian Defence Research Board. It was one of the earlier fully transistorized machines, running in prototype form …
