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  2. Radar horizon - Wikipedia

    en.wikipedia.org/wiki/Radar_horizon

    The radar horizon with an antenna height of 75 feet (23 m) over the ocean is 10-mile (16 km). However, since the pressure and water vapor content of the atmosphere varies with height, the path used by the radar beam is refracted by the change in density. With a standard atmosphere, electromagnetic waves are generally bent or refracted downward.

  3. Eglin AFB Site C-6 - Wikipedia

    en.wikipedia.org/wiki/Eglin_AFB_Site_C-6

    Eglin AFB Site C-6 is a United States Space Force radar station which houses the AN/FPS-85 phased array radar, associated computer processing system(s), and radar control equipment designed and constructed for the U.S. Air Force by the Bendix Communications Division, Bendix Corporation.

  4. Over-the-horizon radar - Wikipedia

    en.wikipedia.org/wiki/Over-the-horizon_radar

    MADRE over-the-horizon radar at the NRL's Chesapeake Bay Detachment U.S. Navy Relocatable Over-the-Horizon Radar station. The most common type of OTH radar, OTH-B (backscatter), [3] uses skywave or "skip" propagation, in which shortwave radio waves are refracted off an ionized layer in the atmosphere, the ionosphere, and return to Earth some distance away.

  5. Plan position indicator - Wikipedia

    en.wikipedia.org/wiki/Plan_position_indicator

    The height of the echoes increases with the distance to the radar, as represented in the adjacent image. This change is not a straight line but a curve as the surface of the Earth is curved and sinks below the radar horizon. For fixed-site installations, north is usually represented at the top of the image

  6. Jindalee Operational Radar Network - Wikipedia

    en.wikipedia.org/wiki/Jindalee_Operational_Radar...

    The Jindalee Operational Radar Network (JORN) is an over-the-horizon radar (OHR) network operated by the Royal Australian Air Force (RAAF) that can monitor air and sea movements across 37,000 square kilometres (14,000 sq mi). [citation needed] It has a normal operating range of 1,000–3,000 kilometres (620–1,860 mi). [1]

  7. AN/FPS-6 Radar - Wikipedia

    en.wikipedia.org/wiki/AN/FPS-6_Radar

    The AN/FPS-6 Radar was a long-range height finding radar used by the United States Air Force's Air Defense Command. The AN/FPS-6 radar was introduced into service in the late 1950s and served as the principal height-finder radar for the United States for several decades thereafter. It was also used by the Royal Air Force alongside their AMES ...

  8. Kasta 2E - Wikipedia

    en.wikipedia.org/wiki/Kasta_2E

    The Kasta 2E (NATO: Flat Face E, alternative name Casta 2E) is a modern Russian radar system. The development of the Kasta 2E surveillance radars was initiated in the former Soviet Union . Its primary objective is to overcome deficiencies or to satisfy the demand in low-level surveillance.

  9. File:Radar-hauteur-en.svg - Wikipedia

    en.wikipedia.org/wiki/File:Radar-hauteur-en.svg

    English: Height of a radar beam above Earth (AGL). Calculation of the height of radar echoes in the operating principles. Assuming the Earth is round, the radar beam in vacuum would raise according to the reverse curvature of the Earth. However, the atmosphere as an refractive index that diminish with height, due to the variation of its density.