Rainfall and water vapor integrated measurement device and method based on dual-frequency dual-polarization microwave link
A microwave link and comprehensive measurement technology, applied in the field of inversion of rainfall and water vapor information, to achieve the effect of improving application benefits
Active Publication Date: 2022-04-05
NAT UNIV OF DEFENSE TECH
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However, during the longer rainless period, microwave link attenuation signals are rarely used for meteorological element observations
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[0046]The present invention is further clarified in conjunction with the accompanying drawings and specific embodiments, and it is to be understood that these examples are intended to illustrate the invention, and those skilled in the
[0047] Such as figure 1 As shown, a rainfall and water vapor integrated measuring device based on dual-band bipolarized microwave links, including dual-frequency transmitters, dual-frequency receivers, bipolarization antennas, data collectors, and data processing terminals, wherein:
[0048] The dual-frequency transmitter transmits a frequency signal source in 9GHz and 10GHz, passing the multiplier, bandpass filter, and power amplifier, via the bipolarization antenna to 18 GHz and 22 GHz bipolarized microwave signal, while The bipolarization antenna alternately transmits 18 GHz and 22 GHz bipolarized microwave signals, dual-frequency rec...
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The invention discloses a comprehensive rainfall and water vapor measurement device and method based on a dual-frequency dual-polarization microwave link, which is composed of a dual-frequency transmitter, a dual-frequency receiver, a dual-polarization antenna, a data collector and a data processing terminal. The dual-frequency transmitter combined with the dual-polarized antenna alternately transmits microwave signals, the dual-frequency receiver combined with the dual-polarized antenna synchronously receives microwave signals of corresponding frequency and polarization mode, and the data collector collects microwave signals in real time and transmits them to the data processing terminal. Firstly, distinguish between sunny and rainy periods, inversion of water vapor information in sunny periods, and inversion of rainfall information in rainy periods. The attenuation caused by rainfall or the attenuation caused by water vapor is calculated by determining the reference level value, and the rainfall intensity or water vapor density is determined according to the corresponding empirical relationship. The present invention performs water vapor density inversion on sunny days and rainfall intensity inversion on rainy days on the basis of dual-frequency judging of sunny and rainy periods. What's more important is to give full play to the attenuation effect of the microwave link to obtain the benefits of atmospheric information.
Description
Technical field [0001] The present invention relates to rainfall and water vapor integrated measuring devices and methods based on dual-band bipolarized microwave links, which belong to meteorological information automation observation, and more specifically, involving decaying of microwave link signals using rainfall and water vapor Role inverse rainfall and water vapor information. Background technique [0002] Preciposis is the most active weather in the stream, accurate monitoring of precipitation is of great significance for production, microwave communications, aviation flights. The existing precipitation measurement means mainly rain meter, rain radar and rain satellite. The rain is measured, the spatial representation is poor; the rain radar is easily interfered with miscellaneous waves, it is difficult to obtain accurate near-ground precipitation information; rain satellite spatial resolution is low, it is difficult to meet short-time forecast requirements. [0003] Wate...
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IPC IPC(8): G01W1/14G01S13/95
CPCG01W1/14G01S13/95Y02A90/10
Inventor 刘西川蒲康高太长翟东力宋堃
Owner NAT UNIV OF DEFENSE TECH