File:Ssr coelpin.jpg
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Ssr_coelpin.jpg (800 × 600 pixels, file size: 190 KB, MIME type: image/jpeg)
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DescriptionSsr coelpin.jpg |
English: A secondary surveillance radar (SSR) near the military airport "Neubrandenburg" (ETNU) in Germany/Western-Pommerania. SSRs interrogate the transponders on civilian craft and the IFF (Identification Friend or Foe) units on military craft. These units transmit a coded signal back to the SSR identifying the aircraft and giving its altitude, so this information appears on the radar screen of the air traffic controller. This SSR uses an LVA (large vertical array) antenna. It consists of a series of vertical waveguides with slots cut in them which act as radiators. This type of phased array antenna has better control of energy radiated at low angles, preventing ground reflections that cause nulls in the radiation pattern which can result in an aircraft not being detected.
Deutsch: Ein Sekundärradargerät der Deutschen Flugsicherung in der Nähe von Neubrandenburg (Mecklenburg/Vorpommern) mit einer de:LVA-Antenne. |
Date | |
Source | Self-photographed |
Author | c.w. |
Permission (Reusing this file) |
GFDL |
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | |
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This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 10:26, 23 March 2007 | ![]() | 800 × 600 (190 KB) | Ian Dunster~commonswiki (talk | contribs) | Lightened, adjusted shadows/contrast and set levels. |
12:14, 13 August 2006 | ![]() | 800 × 600 (52 KB) | Charly Whisky (talk | contribs) | Secondary Surveillance Radar (SSR) using a Large Vertical Aperture (LVA) as antenna |
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Orientation | Normal |
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Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 10:12, 23 March 2007 |
Color space | sRGB |