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planetary radar

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См. также в других словарях:

  • Radar astronomy — is a technique of observing nearby astronomical objects by reflecting microwaves off target objects and analyzing the echoes. This research has been conducted for four decades. Radar astronomy differs from radio astronomy in that the latter is a… …   Wikipedia

  • radar — /ray dahr/, n. 1. Electronics. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns. 2. a means or sense of awareness or… …   Universalium

  • radar astronomy — the branch of astronomy that uses radar to map the surfaces of planetary bodies, as the moon and Venus, and to determine periods of rotation. [1955 60] * * * …   Universalium

  • radar astronomy — ra′dar astron omy n. astron. the branch of astronomy that uses radar to map the surfaces of planetary bodies, as the moon and Venus, and to determine periods of rotation • Etymology: 1955–60 …   From formal English to slang

  • Astronomía radar — Saltar a navegación, búsqueda Imágenes de radar y modelo de computadora del asteroide 1998 JM8 La astronomía radar es una técnica de observar objetos astronómicos próximos reflejando las microondas de estos objetos y analizando los ecos. Esta… …   Wikipedia Español

  • Space-Based Radar — refers to space borne radar systems that may have any of a variety of purposes. A number of earth observing radar satellites, such as RadarSat, have employed synthetic aperture radar (SAR) to obtain terrain and land cover information about the… …   Wikipedia

  • Synthetic aperture radar — (SAR) is a form of radar in which the highly directional (and thus very large) rotating antenna used by conventional radar is replaced with many low directivity small stationary antenna positions scattered over some area near or around the target …   Wikipedia

  • Interferometric synthetic aperture radar — Interferometric synthetic aperture radar, also abbreviated InSAR or IfSAR, is a radar technique used in geodesy and remote sensing. This geodetic method uses two or more synthetic aperture radar (SAR) images to generate maps of surface… …   Wikipedia

  • radio and radar astronomy — Study of celestial bodies by measuring the energy they emit or reflect at radio wavelengths. It began in 1931 with Karl Jansky s discovery of radio waves from an extraterrestrial source. After 1945, huge dish antennas, improved receivers and data …   Universalium

  • Corona (planetary geology) — For other uses, see Corona (disambiguation). In planetary geology, a corona (plural: coronae) is an oval shaped feature. Coronae appear on both the planet Venus and Uranus s moon Miranda and may be formed by upwellings of warm material below the… …   Wikipedia

  • Mercury (planet) — Mercury  ☿ …   Wikipedia

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