Modified rain attenuation model for tropical regions for Ku-band signals

Visagaperuman Ramachandran; Vickal Kumar

doi:10.1002/sat.846

Modified rain attenuation model for tropical regions for Ku-band signals

Visagaperuman Ramachandran, Vickal Kumar

Research output: Contribution to journal › Article › Research › peer-review

58 Citations (Scopus)

Abstract

Attenuation measurement on Ku- band satellite signal in a tropical site, Fiji is presented. Rain-attenuation prediction by ITU-R and the Crane Global models showed noticeable deviation to the measured values. Unlike the monotonic decrease predicted by these models, exceedance of rain-rate and attenuation in Fiji and other tropical regions showed the presence of breakpoints. For Suva, the breakpoint in rain-rate and attenuation were at 58 mm/h and 9.4dB with exceedances of 0.009 and 0.018 , respectively. Modifications to the ITU-R model are proposed in this paper, for adopting it in the tropics. These modifications are based on the properties that in the tropics (i) the accumulation time factor at the breakpoints is an invariant (ii) for elevation angles

Original language	English
Pages (from-to)	53 - 67
Number of pages	15
Journal	International Journal of Satellite Communications and Networking
Volume	25
Issue number	1
DOIs	https://doi.org/10.1002/sat.846
Publication status	Published - 2007
Externally published	Yes

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10.1002/sat.846

Cite this

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title = "Modified rain attenuation model for tropical regions for Ku-band signals",

abstract = "Attenuation measurement on Ku- band satellite signal in a tropical site, Fiji is presented. Rain-attenuation prediction by ITU-R and the Crane Global models showed noticeable deviation to the measured values. Unlike the monotonic decrease predicted by these models, exceedance of rain-rate and attenuation in Fiji and other tropical regions showed the presence of breakpoints. For Suva, the breakpoint in rain-rate and attenuation were at 58 mm/h and 9.4dB with exceedances of 0.009 and 0.018 , respectively. Modifications to the ITU-R model are proposed in this paper, for adopting it in the tropics. These modifications are based on the properties that in the tropics (i) the accumulation time factor at the breakpoints is an invariant (ii) for elevation angles",

author = "Visagaperuman Ramachandran and Vickal Kumar",

year = "2007",

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language = "English",

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AU - Ramachandran, Visagaperuman

AU - Kumar, Vickal

PY - 2007

Y1 - 2007

N2 - Attenuation measurement on Ku- band satellite signal in a tropical site, Fiji is presented. Rain-attenuation prediction by ITU-R and the Crane Global models showed noticeable deviation to the measured values. Unlike the monotonic decrease predicted by these models, exceedance of rain-rate and attenuation in Fiji and other tropical regions showed the presence of breakpoints. For Suva, the breakpoint in rain-rate and attenuation were at 58 mm/h and 9.4dB with exceedances of 0.009 and 0.018 , respectively. Modifications to the ITU-R model are proposed in this paper, for adopting it in the tropics. These modifications are based on the properties that in the tropics (i) the accumulation time factor at the breakpoints is an invariant (ii) for elevation angles

AB - Attenuation measurement on Ku- band satellite signal in a tropical site, Fiji is presented. Rain-attenuation prediction by ITU-R and the Crane Global models showed noticeable deviation to the measured values. Unlike the monotonic decrease predicted by these models, exceedance of rain-rate and attenuation in Fiji and other tropical regions showed the presence of breakpoints. For Suva, the breakpoint in rain-rate and attenuation were at 58 mm/h and 9.4dB with exceedances of 0.009 and 0.018 , respectively. Modifications to the ITU-R model are proposed in this paper, for adopting it in the tropics. These modifications are based on the properties that in the tropics (i) the accumulation time factor at the breakpoints is an invariant (ii) for elevation angles

U2 - 10.1002/sat.846

DO - 10.1002/sat.846

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JO - International Journal of Satellite Communications and Networking

JF - International Journal of Satellite Communications and Networking

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