Measurement of Depolarization due to Snowfall at 34.5 GHz

Toshio IHARA; Yoji FURUHAMA; Katsusuke TOHMA

Measurement of Depolarization due to Snowfall at 34.5 GHz

Toshio IHARA, Yoji FURUHAMA, Katsusuke TOHMA

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A depolarization phenomenon at 34.5 GHz due to wet snow was observed in a horizantal terrestrial path of 1.3 km. Data during snowfall show fairly large degradations of XPD in comparison with data during rain and theoretical values based upon the model of deformed raindrop, under the condition of the same copolar attenuation. Much larger deformation of snowflake than that of raindrop must be assumed to explain such inclination by the model of depolarization due to an oblate spheroidal snowflake. Effective differential propagation constants of snow, which are derived from measurements of XPD and phase difference between cross- and co-polar components, show that depolarization due to wet snow at 34.5 GHz comes from not only differential phase shift but also differential attenuation. A certain kind of anomalous depolarization on Earth-space paths may be explained by the model of depolarization due to wet snow.

Publication: IEICE TRANSACTIONS on transactions Vol.E65-E No.1 pp.16-22

Publication Date: 1982/01/25

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Type of Manuscript: PAPER

Category: Antenna and Propagation

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Toshio IHARA
Yoji FURUHAMA
Katsusuke TOHMA

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Toshio IHARA, Yoji FURUHAMA, Katsusuke TOHMA, "Measurement of Depolarization due to Snowfall at 34.5 GHz" in IEICE TRANSACTIONS on transactions, vol. E65-E, no. 1, pp. 16-22, January 1982, doi: .
Abstract: A depolarization phenomenon at 34.5 GHz due to wet snow was observed in a horizantal terrestrial path of 1.3 km. Data during snowfall show fairly large degradations of XPD in comparison with data during rain and theoretical values based upon the model of deformed raindrop, under the condition of the same copolar attenuation. Much larger deformation of snowflake than that of raindrop must be assumed to explain such inclination by the model of depolarization due to an oblate spheroidal snowflake. Effective differential propagation constants of snow, which are derived from measurements of XPD and phase difference between cross- and co-polar components, show that depolarization due to wet snow at 34.5 GHz comes from not only differential phase shift but also differential attenuation. A certain kind of anomalous depolarization on Earth-space paths may be explained by the model of depolarization due to wet snow.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e65-e_1_16/_p

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@ARTICLE{e65-e_1_16,
author={Toshio IHARA, Yoji FURUHAMA, Katsusuke TOHMA, },
journal={IEICE TRANSACTIONS on transactions},
title={Measurement of Depolarization due to Snowfall at 34.5 GHz},
year={1982},
volume={E65-E},
number={1},
pages={16-22},
abstract={A depolarization phenomenon at 34.5 GHz due to wet snow was observed in a horizantal terrestrial path of 1.3 km. Data during snowfall show fairly large degradations of XPD in comparison with data during rain and theoretical values based upon the model of deformed raindrop, under the condition of the same copolar attenuation. Much larger deformation of snowflake than that of raindrop must be assumed to explain such inclination by the model of depolarization due to an oblate spheroidal snowflake. Effective differential propagation constants of snow, which are derived from measurements of XPD and phase difference between cross- and co-polar components, show that depolarization due to wet snow at 34.5 GHz comes from not only differential phase shift but also differential attenuation. A certain kind of anomalous depolarization on Earth-space paths may be explained by the model of depolarization due to wet snow.},
keywords={},
doi={},
ISSN={},
month={January},}

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TY - JOUR
TI - Measurement of Depolarization due to Snowfall at 34.5 GHz
T2 - IEICE TRANSACTIONS on transactions
SP - 16
EP - 22
AU - Toshio IHARA
AU - Yoji FURUHAMA
AU - Katsusuke TOHMA
PY - 1982
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E65-E
IS - 1
JA - IEICE TRANSACTIONS on transactions
Y1 - January 1982
AB - A depolarization phenomenon at 34.5 GHz due to wet snow was observed in a horizantal terrestrial path of 1.3 km. Data during snowfall show fairly large degradations of XPD in comparison with data during rain and theoretical values based upon the model of deformed raindrop, under the condition of the same copolar attenuation. Much larger deformation of snowflake than that of raindrop must be assumed to explain such inclination by the model of depolarization due to an oblate spheroidal snowflake. Effective differential propagation constants of snow, which are derived from measurements of XPD and phase difference between cross- and co-polar components, show that depolarization due to wet snow at 34.5 GHz comes from not only differential phase shift but also differential attenuation. A certain kind of anomalous depolarization on Earth-space paths may be explained by the model of depolarization due to wet snow.
ER -