Multi-band microwave link-combined regional precipitation measurement method

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...

AI Technical Summary

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.

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