File:Radar waveguide.JPG
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Summary
DescriptionRadar waveguide.JPG |
English: In this military radar, microwave radiation is transmitted between the source and the reflector by a waveguide. The figure suggests that microwaves leave the box in a circularly symmetric mode (allowing the antenna to rotate), then they are converted to a linear mode, and pass through a flexible stage. Their polarisation is then rotated in a twisted stage and finally they irradiate the parabolic antenna.
Русский: В этом военном радаре микроволновое излучение передаётся от источника к облучателю рефлектора с помощью волноводов. СВЧ-волны выводятся из кабины в круговой поляризации, чтобы обеспечить возможность вращения антенны, затем они преобразуются в линейно поляризованные волны и проходят по гибкому гофрированному прямоугольному волноводу. Затем их поляризация поворачивается в перекрученном жёстком волноводе и в конце они излучаются через рупорный облучатель с диэлектрической линзой на параболическую антенну. |
Date | |
Source | Own work |
Author | FDominec |
Camera location | 55° 17′ 26.88″ N, 12° 27′ 17.64″ E | View this and other nearby images on: OpenStreetMap | 55.290800; 12.454900 |
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Items portrayed in this file
depicts
2 July 2012
55°17'26.9"N, 12°27'17.6"E
288,303 byte
1,085 pixel
1,230 pixel
image/jpeg
31ac7f8282877eb5738048f907c0e391ca76d9e4
0.00125 second
6.6 millimetre
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:57, 12 January 2015 | 1,230 × 1,085 (282 KB) | wikimediacommons>FDominec | cropped |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot A495 |
Exposure time | 1/800 sec (0.00125) |
F Number | f/3 |
ISO speed rating | 80 |
Date and time of data generation | 10:13, 2 July 2012 |
Lens focal length | 6.6 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 20:56, 12 January 2015 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 10:13, 2 July 2012 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 9.65625 |
APEX aperture | 3.15625 |
APEX exposure bias | 0 |
Maximum land aperture | 3.15625 APEX (f/2.99) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 15,136.929460581 |
Focal plane Y resolution | 15,116.022099448 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |