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Retrieval of rainfall fields using signal attenuation measurements from commercial microwave links. A modeling feasibility study.

Abstract : The objective in this study is to assess the feasibility of retrieval of rainfa ll fields in urban areas using commercial microwave links, with a special focus given on cellular network, in a simulation framework applied to a realistic case study. The study domain is the city of Nantes, France. As a basis, we use a data set consisting of 207 weather radar images recorded by Météo - France C band at high spatial (250m x 250m) and temporal (5 min) resolutions. We generated rain attenuation data along those links that are used to represent real signal attenuation data that can be recorded a t microwave antenna stations. Two retrieval algorithms, namely inverse and tomography, are proposed to retrieve rainfall fields based on the generated rain attenuation data. To validate the system performance, we carry out series of rain retrieval tests in light rain, shower, organized and unorganized storm events with high spatial and temporal variability. The comparisons between the inverse and the tomographic algorithms are also made over 40 rainfall fields in 4 events in order to define limitations and capabilities of both algorithms.
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Bahtiyor Zohidov. Retrieval of rainfall fields using signal attenuation measurements from commercial microwave links. A modeling feasibility study.. Hydrology. École centrale de Nantes, 2016. English. ⟨NNT : 2016ECDN0022⟩. ⟨tel-02990832⟩

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