Raininess estimation method based on dual polarization Doppler weather radar detection
A weather radar, dual linear polarization technology, applied in the field of rain intensity estimation based on dual linear polarization Doppler weather radar detection, can solve problems such as large differences, and achieve the effect of improving capabilities, advanced and reasonable algorithms, and improved accuracy
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[0027] Such as figure 1 As shown in , a rain intensity estimation method based on dual linear polarization Doppler weather radar detection, the method includes:
[0028] (1) When the echo intensity Z of precipitation H When smaller, use the echo intensity Z H to estimate precipitation, namely:
[0029] R(Z H ) = a 1 Z H b1 (1)
[0030] Among them, R(Z H ) means echo intensity Z H Estimated rain intensity R, its unit is mm h -1 ; Z H is the echo intensity, and its unit is mm 6 m -3 ;a 1 , b 1 It is an adjustable parameter. For different bands and different rainfall types, the values of each parameter are not exactly the same;
[0031] At this time, the shape of the raindrops is approximately spherical and isotropic, which is in line with the assumptions of the conventional radar to estimate the rain intensity; at the same time, because the Z DR and K DP If the value is small, it is easy to produce measurement error, use Z DR and K DP On the contrary...
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