A Yearlong Performance of Satellite Broadcasting Receiving Systems
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概要
- 論文の詳細を見る
It is well known that weather conditions affect the performance of satellite broadcasting receiving systems. For example, snow accretion on antennas degrades the receiving performance seriously because it reduces received signal power and also can increase antenna noise. Since effects of the weather are considered to differ for various types of receiving antenna, an investigation on this phenomenon is very important. A study on weather effects to three types of satellite broadcasting receiving antenna, a planar antenna, a center-fed parabolic reflector antenna, and an offset parabolic reflector antenna, is presented in this paper. Since the performance of receiving antennas can be determined by a parameter G/T, a long-term and continuous measurement of G/T must be performed. Furthermore, the measurement of more than one receiving system should be performed simultaneously. Also, the measurement should be performed in a snowy area (in winter) and a rainy area (in the other seasons) to evaluate the effect of the weather. To fulfil the criterion, a continuous measurement system of G/T has been built in Hokkaido University, Sapporo. Sapporo, which is located at latitude degrees north, has a long and snowy winter, and also has rainy days in the other seasons so that we can evaluate the effect of weather. Using this measurement system, cumulative distributions of measurement results are obtained so that the performance of different types of receiving system can be evaluated. In this paper, some considerations on the noise level are also discussed briefly to evaluate the performance degradation of the receiving systems.
- 社団法人電子情報通信学会の論文
- 1994-06-25
著者
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Ohmiya Manabu
Faculty Of Engineering Hokkaido University
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ITOH Kiyohiko
Tomakomai National College of Technology
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Purwanto Yuliman
Faculty of Engineering, Hokkaido University
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Ogawa Yasutaka
Faculty of Engineering, Hokkaido University
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Itoh Kiyohiko
Faculty of Engineering, Hokkaido University
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Ogawa Y
Riken Wako‐shi Jpn
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Itoh K
Tomakomai National College Of Technology
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Itoh Kiyohiko
Faculty Of Engineering Hokkaido University
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Ogawa Yasutaka
Faculty Of Engineering Hokkaido University
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Purwanto Y
Satya Wacana Christian Univ. Salatiga Idn
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