synthetic antenna

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• 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

• synthetic aperture antenna — sintezuotosios apertūros antena statusas T sritis radioelektronika atitikmenys: angl. synthetic aperture antenna vok. Antenne mit synthetischemÖffnungswinkel, f rus. антенна с синтезированной апертурой, f pranc. antenne synthétique, f …   Radioelektronikos terminų žodynas

• synthetic aperture radar — noun : a radar system that uses the motion of the vehicle (as a spacecraft) carrying it to simulate a system having a much larger antenna area and that is used to obtain high resolution images of a surface (as of a planet) * * * synthetic… …   Useful english dictionary

• synthetic aperture radar — An airborne radar that produces an image of the scene that is similar to, but not identical with, an optical photograph. A cross range resolution obtained from a Doppler frequency, along with range resolution, forms the basis of a synthetic… …   Aviation dictionary

• Tactical Synthetic Aperture Radar — The Tactical Synthetic Aperture Radar (TSAR) is a new radar system introduced on the MQ 8B Fire Scout unmanned aerial vehicle. It delivers high resolution, wide area radar images day or night, and in all weather conditions. TSAR systems take… …   Wikipedia

• Inverse synthetic aperture radar — (ISAR) is a technique to generate a two dimensional high resolution image of a target.In situations where other radars display only a single unidentifiable bright moving pixel, the ISAR image is often adequate to discriminate between various… …   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

• Synthetically thinned aperture radar — Synthetic Thinned Aperture Radiometry (STAR) is a method of radar in which the coherent product (correlation) of the signal from pairs of antennas is measured at different antenna pair spacings (baselines) [Synthetic Thinned Aperture Radiometry… …   Wikipedia

• Radar MASINT — is one of the subdisciplines of Measurement and Signature Intelligence (MASINT) and refers to intelligence gathering activities that bring together disparate elements that do not fit within the definitions of Signals Intelligence (SIGINT),… …   Wikipedia

• History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …   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