The puzzle palace

Locksley, Gareth

doi:10.1016/0308-5961(83)90090-3

Cited by 1 publication

(2 citation statements)

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“…A wide range of satellites orbit the Earth, for commercial applications (communications, data or image transmission), for military [3][4][5] (Ikonos [6]) or scientific purposes (Jason, Modis), for amateur radio communications built by AMSAT, [7] or for meteorological observations. We are here mainly interested in this latter set.…”

Section: Meteorology Satellitesmentioning

confidence: 99%

“…In the case of the geostationary satellites, the optimal means for getting a good signal-to-noise ratio is to use an antenna with a very high gain 3 and accurately focused in a fixed direction towards the satellite. Such a result is usually achieved with a parabola properly oriented towards the satellite (towards the south in the northern hemisphere since geostationary satellites are located over the equator).…”

Section: Antennasmentioning

confidence: 99%

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Satellite image eavesdropping: a multidisciplinary science education project

Friedt¹

2005

Eur. J. Phys.

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Amateur reception of satellite images gathers a wide number of concepts and technologies which makes it attractive as an educational tool. We here introduce the reception of images emitted from NOAA series low-altitude Earth-orbiting satellites. We tackle various issues including the identification and prediction of the pass time of visible satellites, the building of the radio-frequency receiver and antenna after modelling their radiation pattern, and then the demodulation of the resulting audio signal for finally displaying an image of the Earth as seen from space.

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Section: Meteorology Satellitesmentioning

confidence: 99%

Section: Antennasmentioning

confidence: 99%