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http://nopr.niscair.res.in/handle/123456789/2925
Title: | Estimation of cross-polarization due to rain over some stations in India |
Authors: | Jaiswal, R Sen Geetha, P Uma, S |
Keywords: | Rainfall rate;Attenuation;Cross-polarization;Rain height |
Issue Date: | Oct-2007 |
Publisher: | CSIR |
Abstract: | In this paper an attempt has been made to compute cross-polarization of millimeter waves in the 30-35 GHz frequency range due to rain. Laws and Parson’s drop size distributions for oblate spheroid drops at 20ºC ITU-R (2002) model has been used to predict cross-polarization discrimination (XPD) for circular polarization. The study includes a number of earth stations in India, namely, Ahmedabad, Calcutta, Delhi, Gangtok and Jodhpur. Variations of co-polar attenuation with XPD have been shown. Cumulative time distribution of XPD has also been presented. The study reveals that cross-polarization depends on frequency, co-polar attenuation and rainfall rate. Comparison with measurement does not show good agreement although the two show the same trend. Extensive work on cross-polarization is required in the millimeter wave frequency range over a large number of earth stations in India using different drop size distributions and different polarizations. |
Page(s): | 379-382 |
URI: | http://hdl.handle.net/123456789/2925 |
ISSN: | 0367-8393 |
Appears in Collections: | IJRSP Vol.36(5) [October 2007] |
Files in This Item:
File | Description | Size | Format | |
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IJRSP 36(5) 379-382.pdf | 168.6 kB | Adobe PDF | View/Open |
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