Abstract
The development of combined double frequency method of radar rain sensing and preliminary results of the experimental study of the method are presented. As it was shown the experimental study is in good agreement with calculations and confirms the main conclusions of the theoretical considerations.
Highlights
Development of radar methods for measurement of rain parameters is of great interest for agriculture, municipal services and for scientific research in climatology, atmosphere physics etc [1]
That is why the double frequency sensing [4,5] is of great interest to increase reliability of the rain measurements
As it can be seen for rain intensity I ≥ 10 mm/h inaccuracy of calculations strongly increases for radar resolution ΔR ≥ 600 m because assumption of uniform distribution of microstructure parameters within resolution cell (7) fulfils worse for larger values of intensity
Summary
Development of radar methods for measurement of rain parameters is of great interest for agriculture, municipal services and for scientific research in climatology, atmosphere physics etc [1]. That is why the double frequency sensing [4,5] is of great interest to increase reliability of the rain measurements In this case the inverse task is defined relatively to parameters of drop size distribution (microstructure parameters). Dependence of rain intensity on radar range resolution ΔR calculated by described iterative procedure (solid lines) are presented in Fig. 6 for rain models with uniform profile of intensity (dashed lines) As it can be seen for rain intensity I ≥ 10 mm/h inaccuracy of calculations strongly increases for radar resolution ΔR ≥ 600 m because assumption of uniform distribution of microstructure parameters within resolution cell (7) fulfils worse for larger values of intensity
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