Differential Emission Measurement for Atmospheric Attenuation at 20.3 and 31.4 GHz by a Radiometer
Summary :
Attenuation measurements of clear atmosphere were made for eight months by observing sky brightness temperature with a dual-frequency microwave radiometer in no use of extraterrestrial radio sources. High resolution measurements or data processing were realized by a differential emission measurement (DEM) method which could largely reduce an additional attenuation error due to measurement error of brightness temperature to about one tenth in comparison with a conventional emission measurement method. A simple approximate equation of atmospheric attenuation was derived as a function of brightness temperature. True brightness temperature can be retrieved from the approximate equation and the DEM method even if measured brightness temperatures include much constant errors.
- Publication
- IEICE TRANSACTIONS on transactions Vol.E67-E No.2 pp.88-95
- Publication Date
- 1984/02/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Antenna and Propagation
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Takeyuki OJIMA, "Differential Emission Measurement for Atmospheric Attenuation at 20.3 and 31.4 GHz by a Radiometer" in IEICE TRANSACTIONS on transactions,
vol. E67-E, no. 2, pp. 88-95, February 1984, doi: .
Abstract: Attenuation measurements of clear atmosphere were made for eight months by observing sky brightness temperature with a dual-frequency microwave radiometer in no use of extraterrestrial radio sources. High resolution measurements or data processing were realized by a differential emission measurement (DEM) method which could largely reduce an additional attenuation error due to measurement error of brightness temperature to about one tenth in comparison with a conventional emission measurement method. A simple approximate equation of atmospheric attenuation was derived as a function of brightness temperature. True brightness temperature can be retrieved from the approximate equation and the DEM method even if measured brightness temperatures include much constant errors.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e67-e_2_88/_p
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@ARTICLE{e67-e_2_88,
author={Takeyuki OJIMA, },
journal={IEICE TRANSACTIONS on transactions},
title={Differential Emission Measurement for Atmospheric Attenuation at 20.3 and 31.4 GHz by a Radiometer},
year={1984},
volume={E67-E},
number={2},
pages={88-95},
abstract={Attenuation measurements of clear atmosphere were made for eight months by observing sky brightness temperature with a dual-frequency microwave radiometer in no use of extraterrestrial radio sources. High resolution measurements or data processing were realized by a differential emission measurement (DEM) method which could largely reduce an additional attenuation error due to measurement error of brightness temperature to about one tenth in comparison with a conventional emission measurement method. A simple approximate equation of atmospheric attenuation was derived as a function of brightness temperature. True brightness temperature can be retrieved from the approximate equation and the DEM method even if measured brightness temperatures include much constant errors.},
keywords={},
doi={},
ISSN={},
month={February},}
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TY - JOUR
TI - Differential Emission Measurement for Atmospheric Attenuation at 20.3 and 31.4 GHz by a Radiometer
T2 - IEICE TRANSACTIONS on transactions
SP - 88
EP - 95
AU - Takeyuki OJIMA
PY - 1984
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E67-E
IS - 2
JA - IEICE TRANSACTIONS on transactions
Y1 - February 1984
AB - Attenuation measurements of clear atmosphere were made for eight months by observing sky brightness temperature with a dual-frequency microwave radiometer in no use of extraterrestrial radio sources. High resolution measurements or data processing were realized by a differential emission measurement (DEM) method which could largely reduce an additional attenuation error due to measurement error of brightness temperature to about one tenth in comparison with a conventional emission measurement method. A simple approximate equation of atmospheric attenuation was derived as a function of brightness temperature. True brightness temperature can be retrieved from the approximate equation and the DEM method even if measured brightness temperatures include much constant errors.
ER -
English
