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Rainfall radar real-time dynamic attenuation correction and precipitation calculation method

A technology of real-time dynamics and calculation methods, applied in the field of atmospheric science, can solve problems such as large precipitation errors

Active Publication Date: 2015-08-05
邓勇 +1
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Problems solved by technology

[0005] With the advancement of radar and raindrop spectrometer technology, the present invention proposes a method for real-time and dynamic attenuation correction and precipitation calculation of rain radar by using the synchronous measurement of laser raindrop spectrometer and rain radar to solve the problem of single radar quantitative Problems with large errors in estimating precipitation

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  • Rainfall radar real-time dynamic attenuation correction and precipitation calculation method
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  • Rainfall radar real-time dynamic attenuation correction and precipitation calculation method

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Embodiment Construction

[0029] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] Such as figure 1 As shown, the real-time dynamic attenuation correction and precipitation calculation method of the rainfall radar of the present invention comprises the following steps:

[0031] 1. Obtain the radar reflectivity factor Zm(R) of the rainfall radar plane position scan in a certain period of time.

[0032] 2. Read the radar reflectivity factor Zp(R) and rain intensity Ip(R) measured by multiple laser raindrop spectrometers at the same time.

[0033] 3. Match Zm(R) and Zp(R) in space, and calculate the c and d coefficients in formula (1) that change with time.

[0034] 4. Bring the c and d coefficients into (2) to perform real-time attenuation correction on a bank-by-bank basis for the rainfall radar.

[0035] 5. Match Zp(R) and Ip(R) in time and space, and calculate or fit the a and b coefficients that vary with time according t...

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Abstract

The present invention discloses a rainfall radar real-time dynamic attenuation correction and precipitation calculation method. Through the precipitation particle information obtained in real time and the improvement of a traditional attenuation correction method, the related parameters of real-time dynamic attenuation correction and precipitation calculation are obtained, the errors of radar rainfall estimation brought by local atmosphere, precipitation attenuation and other factors are effectively improved.

Description

technical field [0001] The invention belongs to the field of atmospheric science, and in particular relates to the synchronous measurement of a laser raindrop spectrometer and a precipitation radar (precipitation radar), which performs real-time and dynamic attenuation correction and precipitation calculation on the precipitation radar. Background technique [0002] Since the beginning of this century, radar quantitative measurement of precipitation has once again been highly valued by many countries, especially developed countries. The CASA program launched by the United States since 2003 uses four X-band radars to carry out quantitative measurement of precipitation caused by mountain torrents and urban waterlogging; in 2013, Japan plans to build 26 "radar rain gauges" with radar as the core to cover its key points Quantitative measurement of precipitation in floodplains. These radars are mainly used for the measurement of precipitation and have obvious characteristics of ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/95G01S7/40G06F19/00
CPCG01S7/40G01S13/95Y02A90/10
Inventor 邓勇钱昆鹏
Owner 邓勇
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