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A regional precipitation measurement method combined with multi-band microwave links

A microwave link and measurement method technology, applied in the direction of rainfall/precipitation gauge, radio wave measurement system, measurement device, etc., can solve the problem that microwave link resources are not fully utilized, and achieve compensation for observation resolution and coverage Insufficiency in aspects, improvement of inversion accuracy, and low hardware cost

Active Publication Date: 2019-01-01
PLA UNIV OF SCI & TECH
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Problems solved by technology

However, most of the existing foreign research uses a certain fixed-frequency microwave link for precipitation inversion, and microwave link resources have not been fully utilized.

Method used

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  • A regional precipitation measurement method combined with multi-band microwave links
  • A regional precipitation measurement method combined with multi-band microwave links
  • A regional precipitation measurement method combined with multi-band microwave links

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Embodiment Construction

[0032] A method for measuring regional precipitation combined with multi-band microwave links of the present invention mainly includes the following steps:

[0033] Step 1: Obtain the attenuation information of each microwave link. Install a data acquisition device on the transmitting and receiving base stations, collect and send the signal level value RSL of the microwave transmitting and receiving ends to the central server in real time, and then calculate the path attenuation value A of each microwave link according to the point-to-point microwave link A .

[0034] Step 2: Build a two-dimensional grid based on the topology. According to the geographic location of the microwave link base station, the topology structure of the multi-band microwave link is established, and based on this, the target area is divided into M×N two-dimensional grids, and each grid may pass through one or several links , it is also possible that there is no link passing through, and the number of ...

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Abstract

The invention discloses a multi-band microwave link-combined regional precipitation measurement method. The method includes the following steps that: data acquisition devices are installed on each microwave link transmitting and receiving base station, and the signal level values RSL of the microwave transmitting and receiving ends are collected and transmitted to a central server in real time, and the path attenuation value of each microwave link is obtained through calculation according to point-to-point microwave links; the central server stores the signal level values RSL sent by each base station in the form of FTP files, carries out matching according to the point-to-point microwave links, and establishes a topological structure of multi-band microwave links based on the geographical positions of the microwave link transmitting and receiving base stations; and two-dimensional grids are established according to the topological structure, and links in each grid are marked. The method has the advantages of wide coverage, low hardware costs and the like. With the method adopted, deficiencies of an existing meteorological observation station network in observation resolution and coverage can be made up.

Description

technical field [0001] The invention relates to a multi-band microwave link combined regional precipitation measurement method, which is mainly used in the automatic detection of ground meteorological elements. Background technique [0002] The real-time and accurate monitoring of precipitation is of great significance for early warning of flood disasters, agricultural irrigation, transportation and numerical weather forecasting. Although rain gauges and weather radars have been widely deployed in the current meteorological observation business, the distribution of rain gauge stations is uneven. Even in areas with relatively dense stations such as cities, it is still difficult to monitor the fine temporal and spatial changes of precipitation; weather radar can monitor precipitation in real time However, the accuracy of quantitative precipitation estimation is affected by rain area attenuation, effective irradiation depth and ground clutter, which makes it difficult to meet t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01W1/14G01S13/95
CPCG01S13/95G01W1/14Y02A90/10
Inventor 高太长刘西川刘磊宋堃薛杨
Owner PLA UNIV OF SCI & TECH
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