Method used for verifying wind speed and wind direction detection data accuracy of boundary layer wind profiler radar

A wind profile radar, wind speed and wind direction technology, applied in the field of meteorological detection, can solve the problems of long time span, poor accuracy of wind speed data, high verification cost, etc., and achieve the effect of high upper limit of measurement height, accurate verification, and high fixed-point performance

Active Publication Date: 2015-11-18
ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

[0010] In view of the existing wind profile radar wind speed and direction data verification problems such as high verification cost, long time span, and poor accuracy of the obtained wind speed data, the main purpose of the present invention is to pro

Method used

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  • Method used for verifying wind speed and wind direction detection data accuracy of boundary layer wind profiler radar
  • Method used for verifying wind speed and wind direction detection data accuracy of boundary layer wind profiler radar
  • Method used for verifying wind speed and wind direction detection data accuracy of boundary layer wind profiler radar

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Embodiment 1

[0044]The present invention uses the wind speed and direction measurement equipment carried by the tethered balloon to obtain wind speed and direction data; by retracting and releasing the mooring cable of the tethered balloon, the tethered balloon is raised and lowered, and the height of the wind speed and direction measurement equipment carried is adjusted to obtain different wind speed and direction data. Wind speed and direction data at altitude. From the wind speed and direction data obtained by the wind profile radar, extract the wind speed and direction data at different heights for a period of time, compare them with the data obtained by the wind speed and direction measurement equipment carried by the tethered balloon, calculate the mean square error at different heights, and obtain the wind profile Radar wind speed and direction data detection accuracy. Compared with the wind profile radar's own index, it can be obtained whether the wind profile radar accuracy index ...

Embodiment 2

[0059] see Figure 7 As shown in the case of strong winds, the verification equipment for the accuracy of the boundary layer wind profile radar wind speed detection data used in the method of the present invention is based on the verification of the accuracy of the boundary layer wind profile radar wind speed and direction detection data of the small tethered balloon system. In detail, the specific implementation steps of the method include:

[0060] Step S2a: Install the device

[0061] Install the wind profile radar, fix the mooring facilities of the mooring balloon, mount the barometer, anemometer and other instruments and equipment on the mooring balloon and anchor the equipment on the ground;

[0062] Step S2b: According to the barometer data, reverse the height of the tethered balloon from the ground, adjust the length of the tether to make the first height of the tethered balloon from the ground to be about 100 meters, and read the wind speed and direction data within ...

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Abstract

The invention provides a method used for verifying wind speed and wind direction detection data accuracy of a boundary layer wind profiler radar. The method comprises the step that S1, from a wind speed and wind direction measuring device carrying a tethered balloon, wind speed and wind direction data of a certain height in a long time above detection area of the wind speed and wind direction measuring device are acquired; S2, the boundary layer wind profiler radar is arranged in the detection area, and real-time wind profiler data at the same height as the wind speed and wind direction measuring device are acquired from the boundary layer wind profiler radar; and S3, mean square error between wind profiler data at different heights and data of a wind speed and wind direction meter is calculated, so as to verify the wind speed and wind direction detection data accuracy of the wind profiler radar at a certain height. According to the invention, a tethered balloon system can be quickly arranged; the launch height covers the detection height of a conventional boundary layer wind profiler; the operation of height lift is flexible; wind speed and wind direction data in a fixed range can be accurately measured for a long time, and the accuracy is high; a lot of modification is prevented; the verifying cost is reduced; and the accuracy of data verifying is improved.

Description

technical field [0001] The invention belongs to the technical field of meteorological detection, in particular to a method for verifying the accuracy of wind speed and direction data detected by a boundary layer wind profile radar, which is used to verify the accuracy of horizontal wind speed and direction, an important technical index of wind profile radar, and realizes the The accuracy and convenience of technical indicator verification. Background technique [0002] Boundary layer wind profile radar is a new type of low-altitude meteorological detection equipment. It uses radio echoes of different beams to calculate the horizontal wind speed, wind direction and vertical airflow within the range of the cone at a certain height of the radar. Among them, the measurement accuracy of horizontal wind speed and direction is the most important detection index. In the actual verification process, it is difficult to obtain the horizontal wind speed and wind direction within the ra...

Claims

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Application Information

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IPC IPC(8): G01W1/18
CPCG01W1/18Y02A90/10
Inventor 王旭巍黄宛宁李兆杰
Owner ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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