Title:
RAINFALL AND WATER VAPOR COMPREHENSIVE MEASUREMENT DEVICE AND METHOD BASED ON DUAL-FREQUENCY DUAL-POLARIZATION MICROWAVE LINK
Document Type and Number:
WIPO Patent Application WO/2021/197167
Kind Code:
A1
Abstract:
A rainfall and water vapor comprehensive measurement device and method based on a dual-frequency dual-polarization microwave link, comprising a dual-frequency transmitter, a dual-frequency receiver, a dual-polarization antenna, a data collector, and a data processing terminal. The dual-frequency transmitter is combined with the dual-polarization antenna to alternately transmit microwave signals, the dual-frequency receiver is combined with the dual-polarization antenna to synchronously receive the microwave signals with corresponding frequencies and polarization modes, and the data collector collects the microwave signals in real time and transmits the microwave signals to the data processing terminal. The method comprises: first distinguishing sunny and rainy periods, performing water vapor information inversion in the sunny period, and performing rainfall information inversion in the rainy period; and calculating attenuation caused by rainfall or attenuation caused by water vapor by utilizing the determined reference level value, and determining rainfall intensity or water vapor density according to a corresponding empirical relationship. On the basis of double-frequency determination of the sunny and rainy days, water vapor density inversion is carried out in sunny days, and rainfall intensity inversion is carried out in rainy days. More importantly, the benefit of obtaining atmospheric information by the microwave link attenuation effect is fully exerted.
Inventors:
LIU XICHUAN (CN)
PU KANG (CN)
GAO TAICHANG (CN)
ZHAI DONGLI (CN)
SONG KUN (CN)
PU KANG (CN)
GAO TAICHANG (CN)
ZHAI DONGLI (CN)
SONG KUN (CN)
Application Number:
PCT/CN2021/082760
Publication Date:
October 07, 2021
Filing Date:
March 24, 2021
Export Citation:
Assignee:
NATIONAL UNIV OF DEFENSE TECHNOLOGY (CN)
International Classes:
G01W1/14
Foreign References:
| CN111474606A | 2020-07-31 | |||
| CN102375161A | 2012-03-14 | |||
| CN110031916A | 2019-07-19 | |||
| CN108562956A | 2018-09-21 | |||
| CN109581546A | 2019-04-05 | |||
| EP3312630A1 | 2018-04-25 |
Attorney, Agent or Firm:
NANJING RUIHONG PATENT & TRADEMARK AGENCY (ORDINARY PARTNERSHIP) (CN)
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