Analysis of Sensitive Parameters of 15～23 GHz Microwave Link Induced by Rain Attenuation

Xichuan LIU; Mingzhong ZOU; Xuguang ZHANG

doi:10.11999/JEIT200180

Volume 43 Issue 7

Jul. 2021

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Xichuan LIU, Mingzhong ZOU, Xuguang ZHANG. Analysis of Sensitive Parameters of 15～23 GHz Microwave Link Induced by Rain Attenuation[J]. Journal of Electronics & Information Technology, 2021, 43(7): 2007-2013. doi: 10.11999/JEIT200180

Citation:

Xichuan LIU, Mingzhong ZOU, Xuguang ZHANG. Analysis of Sensitive Parameters of 15～23 GHz Microwave Link Induced by Rain Attenuation[J]. Journal of Electronics & Information Technology, 2021, 43(7): 2007-2013. doi: 10.11999/JEIT200180

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Analysis of Sensitive Parameters of 15～23 GHz Microwave Link Induced by Rain Attenuation

doi: 10.11999/JEIT200180

1.
College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China
2.
Jiangyin River Management Office, Jiangyin 214431, China
3.
PLA 32203 Unit, Huayin 714200, China

Funds: The National Natural Science Foundation of China (41975030, 41505135, 41475020), Jiangsu Water Resource Science and Technology Project (2019050)

Received Date: 2020-03-20
Rev Recd Date: 2020-10-14

Available Online: 2020-12-11

Publish Date: 2021-07-10

Abstract

Abstract

To improve the description accuracy of the characteristics of microwave link induced by rain attenuation and expand the available parameters of microwave link signals, the 15 GHz, 18 GHz and 23 GHz microwave links and rain gauges deployed in Jiangyin area of Jiangsu Province are used to carry out synchronous comparative observation, and the rain attenuation relationship at three frequency bands are fitted. The relationship between the 13 features of the received signal level (including the average, median, 25% quantile, 75% quantile, standard deviation, maximum, minimum, etc.) and the rain/no-rain period and rainfall intensity is extracted and analyzed. The conclusions are as follows. There is an obvious negative correlation between the signal of microwave link and the rainfall intensity. There is a general good consistency between the fitted rain attenuation relationship and the ITU-R empirical rain attenuation relationship, but there are certain of differences in different frequencies; All 13 parameters have a certain probability of overlap in the rain period and no-rain period, which is the main reason why it is difficult to distinguish between rain and no-rain; The higher is the frequency, the more significant is the impact of rainfall on the signal change, the more conducive to the microwave link inversion of rainfall. The results provide an important basis for improving the discrimination of rain and no-rain, and determination of reference value and inversion of rain intensity.
- Microwave link,
- Rainfall,
- Rain attenuation relationship,
- Features

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References(16)

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