A Measuring Method of Atmospheric Temperature Based on Brillouin LiDAR System
An atmospheric temperature and lidar technology, which is applied to the temperature measurement of moving fluids, thermometers, and heat measurement. It can solve the problems of measurement accuracy and application constraints, the model has no analytical form, and the temperature inversion is unstable. Remote sensing real-time monitoring, improving real-time problems, and satisfying the effect of real-time online data analysis
Active Publication Date: 2020-04-10
EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the model has no analytical form, the mathematical calculation is too complicated, and the environmental parameters in the real remote sensing measurement are unknown, which will bring great instability to the inversion of temperature, resulting in a greater impact on its measurement accuracy and application. constraint
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0054] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0055] A kind of atmospheric temperature measurement method of the embodiment of the present invention, its concrete steps are as follows:
[0056] (1) Theoretical Rayleigh Brillouin linewidth calculation
[0057] Due to the small influence of upper atmospheric aerosols, temperature measurement lidars based on echo signal energy detection are widely used, so the application scope of lidars using spectrum detection is mostly in the lower atmosphere.
[0058] According to the standard atmosphere of the United States, in the typical climate of the northern hemisphere, the atmospheric tempera...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for measuring atmospheric temperature by using a Brillouin laser radar system, comprising: S1 calculating and obtaining spectral line widths under different temperatures and pressures; The relationship between the width and the atmospheric temperature and pressure is fitted to obtain the corresponding relational expression; S3 processes the laser echo signal to obtain the laser echo spectrum signal, and processes the laser echo spectrum signal to obtain the spectral line width; S4, calculate the pressure under the current conditions, and use the obtained pressure and the line width obtained in step S3 to obtain the atmospheric temperature information. The invention also discloses another method for measuring the atmospheric temperature by using the Brillouin laser radar system. The present invention utilizes the relationship between atmospheric temperature, pressure and Rayleigh Brillouin line width, significantly improves the real-time problem of atmospheric temperature measurement on the basis of ensuring that the measurement error of atmospheric temperature is small, and can obtain atmospheric temperature simply and directly .
Description
technical field [0001] The invention relates to the field of atmospheric temperature measurement, in particular to an atmospheric temperature measurement method based on a Brillouin laser radar system. Background technique [0002] Atmospheric vertical temperature monitoring has always been an important research work in the fields of meteorology, environmental protection, and space engineering, and it is also an important field of lidar applications. Among them, the detection of Raman scattering echo signals through spectral signals is widely used in low-altitude atmosphere. [0003] However, from the perspective of scattering mechanism, the Raman scattering cross section is much smaller than that of Rayleigh Brillouin, and the echo signal is very weak. This will require high-power laser emitting equipment and high-sensitivity receiving equipment, and the cost is relatively high, and the cost of large-scale network deployment big. At the same time, the Raman scattering echo...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/95G01K13/02G01K11/322
CPCG01K13/028G01S17/95Y02A90/10
Inventor 梁琨周波
Owner EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH