Paper Abstract and Keywords |
Presentation |
2014-05-30 09:45
Relationship between Rain Attenuation Duration Time of Ku-Band Satellite Communications Links and Speeds of Rain Area Motion in Equatorial Region Yasuyuki Maekawa, Keigo Takemoto, Akihiro Tama, Yoshiaki Shibagaki (Osaka Electro-Comm. Univ.) AP2014-29 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Rain attenuation statistics are obtained for both up and down links of Ku-band Superbird C, which connects the earth stations at Equatorial Atmosphere Radar (EAR) in West Sumatra, Indonesia and Research Institute of Sustainable Humanosphere (RISH) of Kyoto University in Uji, Kyoto during four years from Sept.2002 to Sept.2006. The rain attenuation and its annual statistics are simultaneously calculated from the precipitation cloud echoes measured by the X-band meteorological radar, being in good agreement with the direct measurements by the satellite signals. The radar observations also indicate the decrease of time percentages in high attenuation range due to localized structure of the clouds. The duration time of rain attenuation is estimated from the horizontal distribution and moving speed of the X-band radar echoes. It is found that some of the duration time can be much longer than in Japan even for extremely large rainfall rate exceeding 70 mm/h. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Satellite communications / Rain attenuation duration time / Ku-band / Equatorial region / Rain area motion / X-band radar / / |
Reference Info. |
IEICE Tech. Rep., vol. 114, no. 62, AP2014-29, pp. 59-62, May 2014. |
Paper # |
AP2014-29 |
Date of Issue |
2014-05-22 (AP) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
Download PDF |
AP2014-29 |