The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Arah dan kelajuan pergerakan kawasan hujan dianggarkan untuk setiap jenis hadapan hujan, menggunakan perbezaan masa yang dikesan dalam pengecilan hujan isyarat gelombang radio satelit Ku-band yang telah diukur di Osaka Electro-Communication University (OECU) di Neyagawa , Osaka, Institut Penyelidikan Humanosphere Lestari (RISH) di Uji, Kyoto, dan Balai Cerap MU (MU) Universiti Kyoto di Shigaraki, Shiga, selama lima tahun yang lalu sejak September 2002. Arah dan kelajuan ini ditunjukkan dengan baik dengan yang diperolehi secara langsung daripada pergerakan muka hadapan hujan dalam carta cuaca yang diterbitkan oleh Agensi Meteorologi Jepun. Pergerakan kawasan hujan didapati mempunyai arah ciri mengikut setiap jenis hujan, seperti bahagian hadapan sejuk dan panas atau taufan. Anggaran berangka kesan teknik kepelbagaian tapak menunjukkan bahawa antara dua tapak antara tiga lokasi (OECU, RISH, MU) yang dipisahkan sebanyak 20-50 km, peratusan masa terkumpul bersama pengecilan hujan menjadi lebih rendah apabila kedua-dua tapak diselaraskan sepanjang arah pergerakan kawasan hujan. Dalam kes sedemikian, berbanding dengan cadangan ITU-R, jarak yang diperlukan antara kedua-dua tapak mungkin, secara purata, dikurangkan kepada kira-kira 60-70% daripada ramalan konvensional.
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Salinan
Yasuyuki MAEKAWA, Takayuki NAKATANI, Yoshiaki SHIBAGAKI, Takeshi HATSUDA, "A Study on Site Diversity Techniques Related to Rain Area Motion Using Ku-Band Satellite Signals" in IEICE TRANSACTIONS on Communications,
vol. E91-B, no. 6, pp. 1812-1818, June 2008, doi: 10.1093/ietcom/e91-b.6.1812.
Abstract: Directions and speeds of the motion of rain areas are estimated for each type of rain fronts, using time differences detected in the rain attenuation of the Ku-band satellite radio wave signals that have been measured at Osaka Electro-Communication University (OECU) in Neyagawa, Osaka, Research Institute of Sustainable Humanosphere (RISH) in Uji, Kyoto, and MU Observatory (MU) of Kyoto University in Shigaraki, Shiga, for the past five years since September 2002. These directions and speeds are shown to agree well with those directly obtained from the motion of rain fronts in the weather charts published by Japan Meteorological Agency. The rain area motion is found to have characteristic directions according to each rain type, such as cold and warm fronts or typhoon. A numerical estimate of the effects of site diversity techniques indicates that between two sites among the three locations (OECU, RISH, MU) separated by 20-50 km, the joint cumulative time percentages of rain attenuation become lower as the two sites are aligned along the directions of rain area motion. In such a case, compared with the ITU-R recommendations, the distance required between the two sites may be, on an average, reduced down to about 60-70% of the conventional predictions.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e91-b.6.1812/_p
Salinan
@ARTICLE{e91-b_6_1812,
author={Yasuyuki MAEKAWA, Takayuki NAKATANI, Yoshiaki SHIBAGAKI, Takeshi HATSUDA, },
journal={IEICE TRANSACTIONS on Communications},
title={A Study on Site Diversity Techniques Related to Rain Area Motion Using Ku-Band Satellite Signals},
year={2008},
volume={E91-B},
number={6},
pages={1812-1818},
abstract={Directions and speeds of the motion of rain areas are estimated for each type of rain fronts, using time differences detected in the rain attenuation of the Ku-band satellite radio wave signals that have been measured at Osaka Electro-Communication University (OECU) in Neyagawa, Osaka, Research Institute of Sustainable Humanosphere (RISH) in Uji, Kyoto, and MU Observatory (MU) of Kyoto University in Shigaraki, Shiga, for the past five years since September 2002. These directions and speeds are shown to agree well with those directly obtained from the motion of rain fronts in the weather charts published by Japan Meteorological Agency. The rain area motion is found to have characteristic directions according to each rain type, such as cold and warm fronts or typhoon. A numerical estimate of the effects of site diversity techniques indicates that between two sites among the three locations (OECU, RISH, MU) separated by 20-50 km, the joint cumulative time percentages of rain attenuation become lower as the two sites are aligned along the directions of rain area motion. In such a case, compared with the ITU-R recommendations, the distance required between the two sites may be, on an average, reduced down to about 60-70% of the conventional predictions.},
keywords={},
doi={10.1093/ietcom/e91-b.6.1812},
ISSN={1745-1345},
month={June},}
Salinan
TY - JOUR
TI - A Study on Site Diversity Techniques Related to Rain Area Motion Using Ku-Band Satellite Signals
T2 - IEICE TRANSACTIONS on Communications
SP - 1812
EP - 1818
AU - Yasuyuki MAEKAWA
AU - Takayuki NAKATANI
AU - Yoshiaki SHIBAGAKI
AU - Takeshi HATSUDA
PY - 2008
DO - 10.1093/ietcom/e91-b.6.1812
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E91-B
IS - 6
JA - IEICE TRANSACTIONS on Communications
Y1 - June 2008
AB - Directions and speeds of the motion of rain areas are estimated for each type of rain fronts, using time differences detected in the rain attenuation of the Ku-band satellite radio wave signals that have been measured at Osaka Electro-Communication University (OECU) in Neyagawa, Osaka, Research Institute of Sustainable Humanosphere (RISH) in Uji, Kyoto, and MU Observatory (MU) of Kyoto University in Shigaraki, Shiga, for the past five years since September 2002. These directions and speeds are shown to agree well with those directly obtained from the motion of rain fronts in the weather charts published by Japan Meteorological Agency. The rain area motion is found to have characteristic directions according to each rain type, such as cold and warm fronts or typhoon. A numerical estimate of the effects of site diversity techniques indicates that between two sites among the three locations (OECU, RISH, MU) separated by 20-50 km, the joint cumulative time percentages of rain attenuation become lower as the two sites are aligned along the directions of rain area motion. In such a case, compared with the ITU-R recommendations, the distance required between the two sites may be, on an average, reduced down to about 60-70% of the conventional predictions.
ER -