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Dual-band weather radar external calibration verification method, device and computer equipment

A weather radar and dual-band technology, applied in the field of radar, can solve problems such as difficult inspections, and achieve the effects of easy correction, improved accuracy, and guaranteed accuracy

Active Publication Date: 2022-02-18
TSINGHUA UNIV
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Problems solved by technology

[0004] However, after external calibration, whether the calibration result is accurate is a very difficult problem to check

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  • Dual-band weather radar external calibration verification method, device and computer equipment
  • Dual-band weather radar external calibration verification method, device and computer equipment
  • Dual-band weather radar external calibration verification method, device and computer equipment

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Embodiment Construction

[0056] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0057] The dual-band weather radar external calibration verification method provided in the embodiment of the present application is used to verify the accuracy of the dual-band weather radar external calibration. Wherein, the dual-band weather radar refers to a weather radar including two operating bands, which may be a Ku / Ka weather radar, an X / Ka weather radar, or other dual-band weather radars. The method provided in the embodiment of the present application can be applied to computer equipment, and the computer equipment is connected to the dual-band weather radar thr...

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Abstract

The application relates to a dual-band weather radar external calibration verification method, device and computer equipment. The method includes: obtaining scanning data of meteorological targets from an externally calibrated dual-band weather radar; determining a first reflectivity factor matrix and a second reflectivity factor matrix according to the scanning data; calculating the first reflectivity factor matrix and the second reflection factor matrix The difference of the reflectivity factor matrix is ​​obtained to obtain the reflectivity factor difference matrix; the ratio of the number of elements whose absolute value is not empty and whose absolute value is less than the first preset threshold to the total number of elements in the reflectivity factor difference matrix is ​​determined to obtain the first ratio; determine The ratio of the number of elements that are not empty and whose absolute value is less than the second preset threshold to the total number of elements in the reflectivity factor difference matrix obtains the second ratio; according to the first ratio and the second ratio, determine the dual-band weather radar. Accuracy of external calibration results. The verification method for the external calibration of the dual-band weather radar provided by this application can realize the verification of the accuracy of the external calibration of the reflectivity factor.

Description

technical field [0001] The present application relates to the field of radar technology, in particular to a dual-band weather radar external calibration verification method, device and computer equipment. Background technique [0002] Meteorological radars are radars dedicated to atmospheric detection. Reflectivity factor is an important parameter of weather radar. The accuracy of the reflectivity factor is directly related to the accuracy of meteorological detection by weather radar. [0003] In order to improve the accuracy of weather radar detection, the reflectivity factor of weather radar is calibrated before use. Calibration is divided into internal calibration and external calibration. Internal calibration is to bring the radar-related internal calibration parameter values ​​into the radar equation, so as to obtain the reflectivity factor of the radar. However, since the internal calibration is a single calibration of the radar system, rather than the overall syst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/40G01S13/95
CPCG01S7/40G01S13/95Y02A90/10
Inventor 魏加华孙卜郊裘钧翁燕章李铁键
Owner TSINGHUA UNIV
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