Prediction of attenuation due to rain: Characteristics of the 0°C isotherm in temperate and tropical climates

Ajayi, G.O.; Barbaliscia, F.

doi:10.1002/sat.4600080311

Cited by 23 publications

(8 citation statements)

References 1 publication

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“…In Nigeria and during raining conditions, the mean freezing height h FR is nearly constant and so equal to h 0 . Its value lies between 4.54 -4.79 km from the coast to the arid region of the country [18]. An average water vapor density of ∼20 g/m 3 was also assumed in this study [19] while temperature of Table 1 Regression coefficients k h and α h of the power law expression for horizontally polarized states [17].…”

Section: Rainmentioning

confidence: 99%

The Application of 3D Rain Scatter Model on Horizontally Polarized SHF Signal Propagation in Tropical Location

Ojo

Okeowo

2008

Int J Infrared Milli Waves

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This paper presents some results of intersystem interference as a result of hydrometeor scattering on horizontally polarized SHF signal propagation in the tropical environment using the 3D rain cell model. The cumulative distribution of transmission loss has been based on the distance dependence (terrestrial station to the center of the common volume distance); frequency dependence and antenna gain dependence. Though there is a less interference (significantly higher transmission loss) at a relatively higher frequency of 20 and 34.8 GHz, the rain-scatter interference problem may not be negligible for a tropical region with high rainfall rate because, for a small percentage of time, the rain scatter power can be received even at a large distance from an interfering station.

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Section: Rainmentioning

confidence: 99%

The Application of 3D Rain Scatter Model on Horizontally Polarized SHF Signal Propagation in Tropical Location

Ojo

Okeowo

2008

Int J Infrared Milli Waves

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“…It also depends on the vertical extent of rain up to rain height. The ITU-R model (2005a,b) is based on the simplified assumption of constant rain height derived from the zero degree isotherm height and a uniform vertical rain structure (Ajayi and Barbaliscia, 1990). These assumptions may not be valid for tropical regions and lead to unsatisfactory results.…”

Section: Introductionmentioning

confidence: 99%

Investigation of vertical profile of rain microstructure at Ahmedabad in Indian tropical region

Das

Shukla

Maitra

2010

Advances in Space Research

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“…It usually represents the boundary between rain region and snow region [7] and sometimes it is referred to the level at which water drop larger than 0.1 mm present [8]. In principle, rain height plays an important role in radiowave propagation modeling and designed related to rain.…”

Section: A Rain Height Descriptionmentioning

confidence: 99%

Rain height information from TRMM precipitation radar for satellite communication in Malaysia

Azlan

Din

Lam

2011

Proceeding of the 2011 IEEE International Conference on Space Science and Communication (IconSpace)

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Tropical and equatorial region exhibits significantly higher rainfall rate with regard to temperate region leading to extreme attenuation for satellite communication links. One relevant issue for radiowave propagation modeling in this particular region is the different structures of precipitation which play an important role in estimating rain fade. To this aim, an investigation of the rain characteristics of 0°C isotherm height in Malaysia derived from the precipitation radar on-board the TRMM (Tropical Rainfall Measuring Mission) satellite has been carried out. In fact, TRMM satellite precipitation radar appears as one of the powerful source of instrument in meteorology and telecommunication in estimating height of rainfall in tropical/equatorial region. In this work, one year of TRMM radar data have been analyzed from the stratiform rain event which there usually exists a well defined melting layer (or bright band). These results are then compared with the radiosonde measurement and ground meteorological radar obtained from earlier publication, together with the mean 0°C isotherm height given in the ITU-R Recommendation P.839. Comparisons show that the freezing heights typically occurred at the height higher than 4.5 km as recommended by ITU-R Recommendation P.839. The preliminary results suggest that by carefully consider the physical information of rain height derived from the various local databases should lead to substantial improvements in the rain attenuation prediction accuracy for equatorial and tropical region.

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Prediction of attenuation due to rain: Characteristics of the 0°C isotherm in temperate and tropical climates

Cited by 23 publications

References 1 publication

The Application of 3D Rain Scatter Model on Horizontally Polarized SHF Signal Propagation in Tropical Location

The Application of 3D Rain Scatter Model on Horizontally Polarized SHF Signal Propagation in Tropical Location

Investigation of vertical profile of rain microstructure at Ahmedabad in Indian tropical region

Rain height information from TRMM precipitation radar for satellite communication in Malaysia

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