Estimation of cross polarization of millimeter waves due to rain over few stations in India and its modification incorporating measured values of rain height
{"title":"Estimation of cross polarization of millimeter waves due to rain over few stations in India and its modification incorporating measured values of rain height","authors":"R. Sen, M.P. Singh","doi":"10.1109/ISAPE.2003.1276754","DOIUrl":null,"url":null,"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. Assuming Laws and Parson's [Laws JO and Parsons DA, 1943] drop size distributions for oblate spheroid drops at 20 /spl deg/C ITU-R method [ITU-R, 1990] has been used to predict depolarization (XPD) for circular polarization. The study includes a number of earth stations in a temperate country like India, namely, Allahabad, Ahmadabad, Bangalore, Calcutta, Delhi, Gangtok, Jodhpur, Madras, Nagpur and Trivandrum. Variations of co-polar attenuation with XPD ha been shown. Cumulative time distribution of XPD has also been presented. The study reveals that cross polarization depends on frequency, path elevation angle, co-polar attenuation and rainfall rate.","PeriodicalId":179885,"journal":{"name":"6th International SYmposium on Antennas, Propagation and EM Theory, 2003. Proceedings. 2003","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"6th International SYmposium on Antennas, Propagation and EM Theory, 2003. Proceedings. 2003","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAPE.2003.1276754","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
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. Assuming Laws and Parson's [Laws JO and Parsons DA, 1943] drop size distributions for oblate spheroid drops at 20 /spl deg/C ITU-R method [ITU-R, 1990] has been used to predict depolarization (XPD) for circular polarization. The study includes a number of earth stations in a temperate country like India, namely, Allahabad, Ahmadabad, Bangalore, Calcutta, Delhi, Gangtok, Jodhpur, Madras, Nagpur and Trivandrum. Variations of co-polar attenuation with XPD ha been shown. Cumulative time distribution of XPD has also been presented. The study reveals that cross polarization depends on frequency, path elevation angle, co-polar attenuation and rainfall rate.
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