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active-passive antenna

См. также в других словарях:

  • Passive radar — systems (also referred to as passive coherent location and passive covert radar) encompass a class of radar systems that detect and track objects by processing reflections from non cooperative sources of illumination in the environment, such as… …   Wikipedia

  • Antenna (radio) — Whip antenna on car …   Wikipedia

  • Passive radiator — A passive radiator or parasitic element is a radio antenna element which does not have any wired input. Instead, it absorbs radio waves radiated from another active antenna element in proximity, and re radiates it in phase with the active element …   Wikipedia

  • Passive repeater — A passive radio link deflection, or passive repeater is a plant for the implementation of a microwave link, in which because of an obstacle in the signal path no direct line of sight microwave link is possible. It has the advantage over the… …   Wikipedia

  • Active Electronically Scanned Array — An Electronically Scanned Array (AESA), also known as active phased array radar is a type of radar whose transmitter and receiver functions are composed of numerous small transmit/receive (T/R) modules. AESA radars feature short to instantaneous… …   Wikipedia

  • Active Electronically Scanned Array — Antenne réseau à commande de phase Antenne réseau à commande de phase pour satellite …   Wikipédia en Français

  • Passive electronically scanned array — A passive electronically scanned array (PESA), as opposed to its active counterpart AESA, is a phased array which has a central radiofrequency source (such as a magnetron, a klystron or a travelling wave tube), sending energy into (usually… …   Wikipedia

  • Digital Active Signal Collector — or DASC antenna is an active antenna for digital signal reception. DASC antennas are often used in DVB T receivers. With a DASC antenna it is possible to receive DVB T signals with a small in house antenna or a relative small outside antenna. The …   Wikipedia

  • Semi-active radar homing — Semi active radar homing, or SARH, is a common type of missile guidance system, perhaps the most common type for longer range air to air and surface to air missile systems. The name refers to the fact that the missile itself is only a passive… …   Wikipedia

  • Distributed Antenna System — DAS diagram A typical DAS node for the Videotron 3G netwo …   Wikipedia

  • Kolchuga passive sensor — The Kolchuga passive sensor is an ESM system developed in Ukraine. Its detection range is limited by line of sight but may be up to 800 km (500 miles) for very high altitude, very powerful emitters. Frequently referred to as Kolchuga Radar , the… …   Wikipedia

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