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

A weather radar, dual-band technology, applied in the field of radar, can solve problems such as difficult inspection, and achieve the effect of easy correction, simple method, and guaranteed accuracy

Active Publication Date: 2020-04-21
TSINGHUA UNIV
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  • Application Information

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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 meteorological radar external calibration verification method and device, and computer equipment
  • Dual-band meteorological radar external calibration verification method and device, and computer equipment
  • Dual-band meteorological radar external calibration verification method and 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 invention relates to a dual-band meteorological radar external calibration verification method, a dual-band meteorological radar external calibration verification device and computer equipment. The dual-band meteorological radar external calibration verification method comprises the following steps of: acquiring scanning data of a meteorological target by means of an externally calibrated dual-band meteorological radar; determining a first reflectivity factor matrix and a second reflectivity factor matrix according to the scanning data; calculating a difference between the first reflectivity factor matrix and the second reflectivity factor matrix to obtain a reflectivity factor difference matrix; determining a ratio of the number of elements which are not empty and have absolute valuessmaller than a first preset threshold value in the reflectivity factor difference matrix to the total number of the elements to obtain a first ratio; determining a ratio of the number of elements which are not empty and have absolute values smaller than a second preset threshold value in the reflectivity factor difference matrix to the total number of the elements to obtain a second ratio; and determining the precision of the external calibration result of the dual-band meteorological radar according to the first ratio and the second ratio. The dual-band meteorological radar external calibration verification method provided by the invention can realize precision verification of reflectivity factor external calibration.

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...

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Application Information

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Patent Type & Authority Applications(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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