Method for regional attenuation correction of radar using a microwave links network
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United States of America Patent
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May 12, 2020
Grant Date -
May 3, 2018
app pub date -
Nov 1, 2017
filing date -
Nov 2, 2016
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Abstract
The complex temporal-spatial variation of raindrop size distribution will affect the precision of quantitative precipitation estimation (QPE) produced from radar data, making it difficult to correct echo attenuation. This invention presents a method for regional attenuation correction of weather radar using a multiple microwave links (ML) network. By measuring the rain attenuation of multiple microwave links in a specific frequency, matching with the weather radar in time and space and processed with discretization. Based on a series of attenuation values of the microwave link network and combined iterations, the attenuation coefficient of each grids is obtained; the total attenuation value of the path is obtained by combining the distance between the radar and each grid point, by which the reginal attenuation of radar echo can be corrected by the ML network efficiently.
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