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Microwave rain attenuation law artificial rainfall experimental method with adjustable link length

An experimental method and link technology, applied in the direction of rainfall/precipitation gauge, climate sustainability, radio wave measurement system, etc.

Active Publication Date: 2020-06-09
HOHAI UNIV
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Problems solved by technology

[0003] Purpose of the invention: The technical problem to be solved by the present invention is to provide a method for artificial rainfall experiment with microwave rain attenuation law with adjustable link length, aiming at simulating different heavy rain attenuation artificial and natural rainfall experiments. The microwave rain attenuation of the actual communication link length under the current rainfall conditions provides a scientific experimental method for revealing the actual microwave rain attenuation law

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  • Microwave rain attenuation law artificial rainfall experimental method with adjustable link length
  • Microwave rain attenuation law artificial rainfall experimental method with adjustable link length
  • Microwave rain attenuation law artificial rainfall experimental method with adjustable link length

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Embodiment Construction

[0025] The specific process of the embodiment of the present invention is as follows figure 1 As shown, specifically:

[0026] Step 1: Design the rainfall intensities of different return periods, simulate artificial rainfall in the artificial rainfall hall, and study the law of microwave rain attenuation under different rain intensities.

[0027] The artificial rainfall intensity of this experiment is calculated according to the relevant specifications, specifically: the Chicago rainstorm formula is used to calculate the rainfall intensity required for the experiment, and simulated by the artificial rainfall system in the rainfall hall. The rain intensity controllable range of the artificial rainfall system is 0-300mm / h.

[0028] The Chicago storm formula is as follows:

[0029]

[0030] Among them, A, b, C, c represent the local parameters of the rainstorm intensity formula;

[0031] P - return period, a;

[0032] t——rainfall duration, min;

[0033] i—rainfall intensi...

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Abstract

The invention discloses a microwave rain attenuation law artificial rainfall experimental method with adjustable link length. The method comprises the following steps: 1) designing and calculating rainfall intensities in different recurrence periods to form an experimental rainfall process, and simulating artificial rainfall by using an artificial rainfall hall; 2) constructing a corner reflector,and dynamically adjusting the length of a microwave link; 3) installing an experimental microwave device, and selecting a microwave link of a specific microwave frequency band as an experimental link; 4) acquiring measurement data on the experimental link under different rainfall intensity conditions by using a self-metering rain gauge; and 5) according to the measurement data, obtaining the whole process of the experiment rainfall intensity change, and analyzing and calculating the microwave rain attenuation law. The microwave rain attenuation process under the conditions of different rain intensities and different link lengths is simulated in an artificial rainfall device, the microwave rain attenuation law is mined and analyzed, accurate and reliable first-hand experimental data is provided for revealing the real microwave rain attenuation law, and a good foundation is laid for accurate rainfall monitoring.

Description

technical field [0001] The invention relates to an artificial rainfall experiment method of microwave rain attenuation law, in particular to an artificial rainfall experiment method of microwave rain attenuation law with adjustable link length. Background technique [0002] my country's research on microwave link retrieval of precipitation began in 2010, and the research on microwave link retrieval of rainfall is still very weak. Because the communication between wireless microwave base stations in my country mainly relies on optical fibers, there is a lack of measured data of microwave rain attenuation under different meteorological conditions, which cannot provide scientific and effective rain attenuation inversion parameters for wireless microwave precipitation inversion in my country. Therefore, it is urgent to carry out relevant experimental research on rainfall retrieval by microwave links. Using existing wireless base stations to conduct rain attenuation experiments ...

Claims

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Application Information

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IPC IPC(8): G01S13/95G01W1/14G06F30/20
CPCG01S13/958G01W1/14Y02A90/10
Inventor 杨涛郑鑫师鹏飞仇丽娜秦友伟李振亚周旭东
Owner HOHAI UNIV
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