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Deviation calibration method and device for radar differential reflectivity

A differential reflection and deviation technology, applied in the field of deviation calibration of radar differential reflectivity, can solve the problems of poor calibration effect of radar differential reflectivity deviation

Active Publication Date: 2019-12-20
BEIJING METABTAR RADAR
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Problems solved by technology

[0006] This application provides a deviation calibration method and device for radar differential reflectivity, aiming to solve the problem of poor calibration effect of radar differential reflectivity deviation in the prior art

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  • Deviation calibration method and device for radar differential reflectivity
  • Deviation calibration method and device for radar differential reflectivity
  • Deviation calibration method and device for radar differential reflectivity

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Embodiment Construction

[0064] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

[0065] It can be known from the background technology that the zenith calibration method used in the prior art can only determine the deviation of the radar differential reflectivity when the radar stops normal operations. Therefore, it is difficult to determine the deviation of the radar differential reflectivity in time. Update, make the deviation calibration effect of radar differential reflectivity poor. In order to calibrate the deviation of radar ...

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Abstract

The invention discloses a deviation calibration method and device for radar differential reflectivity. The deviation calibration method includes the steps that all differential reflectivity scanned byradar echoes is obtained; under the situation of determining that the number of range bins of the target radar echoes is greater than a preset threshold, target differential reflectivity is selectedfrom all the differential reflectivity; ZDR values of the target differential reflectivity serves as differential reflectivity deviations of the radar echoes; the differential reflectivity deviationscorresponding to the different types of radar echoes are subjected to weighted averaging to obtain the deviation of the radar differential reflectivity in any radar scanning cycle; and the target deviation is selected from all the deviations in the preset time, and the target deviation serves as the deviation of the radar differential reflectivity in the preset time. Compared with a zenith calibration method, normal business of a radar does not need to be stopped, the deviation calibration method is not limited to any weather, the deviation of the radar differential reflectivity can be obtained in real time on the basis of the differential reflectivity obtained by radar echo scanning, and the deviation calibration effect of the radar differential reflectivity is improved.

Description

Technical field [0001] This application relates to the field of radar detection technology, and in particular to a method and device for calibrating the deviation of radar differential reflectivity. Background technique [0002] Dual-polarization radar is a radar that can transmit and receive horizontally polarized waves as well as vertically polarized waves. It is widely used in the field of meteorological detection. As an important observation of dual-polarization radar, differential reflectance plays a vital role in the process of predicting weather. Among them, the accuracy of differential reflectance directly affects the accuracy of meteorological prediction. [0003] However, because the horizontal channel and vertical channel of dual-polarization radar are usually not guaranteed to be completely consistent, and the components and installations in the two are also different to a certain extent, the differential reflectance determined by the radar based on the scan data will b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40
CPCG01S7/4004
Inventor 孙召平郭嘉郭泽勇尹春光
Owner BEIJING METABTAR RADAR
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