wideband beams

См. также в других словарях:

• Electronically scanned array — An electronically scanned array (ESA), or a phased array, offers many advantages over mechanically scanned antennas such as instantaneous beam scanning, the availability of multiple concurrent agile beams and concurrently operating radar modes.… …   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

• Photonic metamaterial — Electromagnetism Electricity · …   Wikipedia

• SETI — Search for Extra Terrestrial Intelligence (SETI) is the collective name for a number of activities to detect intelligent extraterrestrial life. The general approach of SETI projects is to survey the sky to detect the existence of transmissions… …   Wikipedia

• Search for extraterrestrial intelligence — The search for extraterrestrial intelligence is sometimes abbreviated as SETI. For other uses, see SETI (disambiguation). Screen shot of the screensaver for SETI@home, a distributed computing project in which volunteers donate idle computer power …   Wikipedia

• Trinitron — A 1985 27 Trinitron Trinitron is Sony s brand name for its line of aperture grille based CRTs used in television sets and computer display monitors. One of the first truly new television systems to enter the market since the 1950s, the Trinitron… …   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

• Transmitter — For biologic transmitters, see transmitter substance. Commercial FM broadcasting transmitter at radio station WDET FM, Wayne State University, Detroit, USA. It broadcasts at 101.9 MHz with a radiated power of 48 kW. In electronics and… …   Wikipedia

• Digital radio — has several meanings: 1. Today the most common meaning is digital radio broadcasting technologies, such as the digital audio broadcasting (DAB) system, also known as Eureka 147. In these systems, the analog audio signal is digitized into zeros… …   Wikipedia

• Beamforming — is a signal processing technique used in sensor arrays for directional signal transmission or reception. This spatial selectivity is achieved by using adaptive or fixed receive/transmit beampattern. The improvement compared with an… …   Wikipedia

• Low Probability of Intercept Radar — A Low Probability of Intercept Radar (LPIR) is designed to be difficult to detect by passive radar detection equipment (such as a radar warning receiver RWR) while it is searching for a target or engaged in target tracking. This characteristic is …   Wikipedia