A Method for Obtaining Scattering Characteristics of River Ice in Infrared Band
A technology of scattering characteristics and infrared band, applied in the research field of infrared radiation scattering characteristics of targets and environments, can solve the problem of low calculation accuracy of scattering models, no consideration of the characteristics of strong directional scattering and strong scattering radiance of river ice, and poor practicability. and other problems, to achieve the effect of easy understanding, enhanced practicability, and small calculation errors
Active Publication Date: 2020-02-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0012] The purpose of the present invention is to solve the problem that the scattering model in the prior art does not take into account the characteristics of strong directional scattering and strong scattering radiation brightness of the river ice when calculating the scattered radiation of the river ice, resulting in low calculation accuracy of the scattering model. For the problem of poor practicability in engineering, a calculation method for the scattering characteristics of river ice in the infrared band is provided
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
[0060] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.
[0061] In the prior art, when dealing with the scattering problem of the underlying surface including river ice, the underlying surface is usually regarded as the Lambertian underlying surface, and the scattering intensity in all directions is considered to be the same, which is a diffuse reflection model. The diffuse reflection calculation formula is used to calculate the scattered radiance. In this method, the fact that river ice has strong specular reflection is ignored. Therefore, the calculation result will have a large error, and the directional scattered radiation brightness of river ice...
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 obtaining the scattering characteristics of river ice in the infrared band, which solves the problem that the scattering model in the prior art does not take into account the strong directional scattering and strong scattering radiation brightness of river ice when calculating the scattered radiation of river ice The characteristics of the scattering model lead to low calculation accuracy and poor practicability in engineering, which belongs to the research field of target and environment infrared radiation scattering characteristics. The present invention divides the BRDF of the river ice surface into diffuse reflection BRDF diff and specular BRDF spec Two parts, respectively calculate the diffuse reflection BRDF diff and specular BRDF spec Obtain the BRDF of the river ice surface; calculate the radiance after scattering by the river ice according to the BRDF of the river ice surface, the wavelength of the incident solar radiation, the incident direction and the observation direction; calculate the scattered radiance of the river ice through the observation direction according to the radiance The brightness of diffuse radiance after absorption by the atmosphere. The invention is used for calculating the scattered radiance brightness of river icicles illuminated by solar radiation during earth observation.
Description
Technical field [0001] A method for obtaining the scattering characteristics of river ice in the infrared band is used to calculate the scattering radiance of river ice under solar radiation during earth observation, and belongs to the research field of infrared radiation scattering characteristics of the target and the environment. Background technique [0002] The infrared scattering characteristics of river ice under solar radiation play a very important role in remote sensing target detection and recognition. [0003] After researching and analyzing the remote sensing data of river ice measured by the FY-3A satellite, it is found that the scattered radiation brightness of the river ice on the solar radiation is very strong, far exceeding the scattered radiation brightness of some surrounding ground objects, and the scattered radiation of river ice Brightness has strong directional characteristics, and it has strong directional scattering. [0004] River ice is a typical non-Lamb...
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): G01N21/49G01N21/55
CPCG01N21/49G01N21/55
Inventor 杨春平周鑫万重涛彭真明
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap