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Synchronous dual-imaging cloud base wind speed measurement method

A wind speed measurement and imaging technology, which is applied in fluid speed measurement, speed/acceleration/impact measurement, measuring devices, etc., can solve the problem of difficult measurement of cloud base wind speed

Inactive Publication Date: 2011-12-07
CMA METEOROLOGICAL OBSERVATION CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for measuring cloud base wind speed with synchronous dual imaging, which solves the problem that cloud base wind speed is difficult to measure

Method used

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  • Synchronous dual-imaging cloud base wind speed measurement method
  • Synchronous dual-imaging cloud base wind speed measurement method
  • Synchronous dual-imaging cloud base wind speed measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1 see figure 1 As shown: the two image collectors are set at a certain distance apart, so that image collector 1 and image collector 2 can capture the distance of the same area of ​​the cloud, and obtain the baseline BC, BC can be more than 200 meters, and B is image collector 1 Focus, C is the focal point of the image collector 2, the lenses of the two image collectors are perpendicular to the sky, and the long axis or short axis of the imaging plane of the image collector is parallel to the baseline;

[0033] Step 2: The image collector 1 and the image collector 2 take pictures of the same area of ​​the cloud at the same time, and obtain photo P1 and photo P2 respectively;

[0034] Step 3 see figure 2 Shown: Assuming that there is a point A at the cloud base in the common shooting area of ​​image collector 1 and image collector 2, find point A in the photo P1 and photo P2 respectively, which is perpendicular to the focal plane of image collector 1 and image col...

Embodiment 2

[0046] Embodiment 2: Different from Embodiment 1, the optical axes of the above two image collector lenses can also be arranged horizontally and parallel, and the major axis or minor axis of the imaging plane of the image collector is parallel to the baseline.

Embodiment 3

[0047] Embodiment 3: Different from Embodiment 1, the imaging planes of the above two image acquisition devices can also be perpendicular to a plane at the same time, and the optical axes of the two lenses form a certain angle of intersection.

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Abstract

A method for measuring cloud base wind speed with synchronous dual imaging, the measurement steps are as follows: Step 1: set the two image collectors at a distance; Step 2: photograph the same area of ​​the cloud at the same time; In photo P1 and photo P2, find the vertical projection point D of point A on the focal plane where image collector 1 and image collector 2 are located, measure the angle ∠DBC between the line connecting point D and point B and baseline BC, and point D The angle ∠DCB between the line connecting point C and the baseline BC; Step 4: Calculate BD and CD through geometric formulas; Step 5: Calculate the horizontal and vertical coordinates of point A on the X-axis and Y-axis respectively; Step 6: In After the interval time t, the horizontal and vertical coordinates X1, Y1 of point D in the cloud are obtained; Step 7: Calculate the wind speed and wind direction according to the formula. The method has relatively simple measurement steps and accurate measurement results, and can be widely used in the fields of aviation, aerospace, meteorology and the like.

Description

technical field [0001] The invention relates to a method for measuring wind speed, in particular to a method for measuring cloud base wind speed. Background technique [0002] The measurement of cloud base wind speed is of great significance to the aerospace field, and cloud base wind speed has a direct impact on the safe flight of aircraft. Traditional anemometers include mechanical anemometers, thermal anemometers, ultrasonic anemometers, etc. The wind direction and wind speed at high altitudes are often measured by weather balloons. A radio signal transponder is hung under the balloon, and then ground radar is used to quickly calculate the wind direction and wind speed at the height of the balloon. However, the above-mentioned ground and high-altitude wind speed measurement equipment are difficult to be used for the measurement of cloud base wind speed. Contents of the invention [0003] The invention provides a method for measuring cloud base wind speed with synchron...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P5/18G01P13/02G01C11/34G01C11/08
Inventor 马舒庆
Owner CMA METEOROLOGICAL OBSERVATION CENT