International Journal of Automotive Engineering
Online ISSN : 2185-0992
Print ISSN : 2185-0984
ISSN-L : 2185-0992
3 巻, 1 号
選択された号の論文の8件中1~8を表示しています
Research Paper
Technical Paper
Research Paper
Technical Note
  • Shunji Miyahara
    2012 年 3 巻 1 号 p. 55-61
    発行日: 2012年
    公開日: 2016/03/25
    ジャーナル オープンアクセス
    In the WG for the study of technical requirement for UWB in the UWB Radio System Committee of MIC, the interference of 24GHz UWB radars toward the Earth Exploiting Satellite Service (EESS) has been studied. This study is based on the ITU recommendations and includes Japan inherent conditions. They are car density, building density and building height. As an area under study, the area (306[m2]) with highest population densities in Tokyo metropolitan is chosen. It is assumed that the satellite and radiometer are GCOM-W1and AMSR2, respectively. Results tell: the worst case, excluding the building reflection loss and having high activity factor, has the margin of 1.2 [dB] for the diffusion rate of the vehicles with UWB radar = 0.1% and the apportion = 1%, and another case including the reflection loss and low activity factor has that of 6.4[dB].
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