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Infrared rough sea surface dynamic simulation method based on texture

A rough sea surface, dynamic simulation technology, applied in the field of computer simulation, can solve the problems of physical authenticity of the sea surface and poor real-time simulation, and achieve the effect of meeting real-time requirements and running fast.

Inactive Publication Date: 2013-05-29
XIDIAN UNIV
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Problems solved by technology

A lot of sea surface simulation work that people have done before is to use texture maps to map the model, and the obtained sea surface physical authenticity and simulation real-time performance are poor

Method used

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  • Infrared rough sea surface dynamic simulation method based on texture
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  • Infrared rough sea surface dynamic simulation method based on texture

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Embodiment Construction

[0030] refer to figure 1 , the detailed implementation steps of the texture-based infrared rough sea surface dynamic simulation method of the present invention are as follows:

[0031] Step 1: Build the infrared radiation model of the sea surface:

[0032] 1a) Calculate the emissivity of the sea surface

[0033] There are many achievements in the research of sea surface emissivity, mainly there are three kinds of sea surface emissivity models: gray body model, empirical model and theoretical model, the present invention uses the empirical model to calculate the emissivity of the sea surface, and stores it as a single-channel R single-line texture , the empirical model can be approximated according to the Wilson equation as:

[0034] ε(ω)=0.98[1-(1-cosω) 5 ]

[0035] Among them, ω is the angle between the radiation direction and the water surface normal;

[0036] 1b) Calculate the albedo of the sea surface

[0037] The sea surface is a better reflector. The calm sea surfa...

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Abstract

The invention discloses an infrared rough sea surface dynamic simulation method based on texture, and mainly solves the problems that in the prior art, the truthfulness and the real-time performance of infrared rough sea surface simulation are low. The implementation procedures of the infrared rough sea surface dynamic simulation method based on the texture include that a Torrance-Sparrow illumination model is used for establishing a sea surface infrared radiation brightness formula; atmosphere circulation software, namely Atmosphere, is used for calculating the emissivity of a sea surface, the micro surface element distribution probability, the sun radiation brightness, the sky radiation brightness, the atmospheric path radiation brightness and the atmospheric transmissivity; calculated results are stored as a digital dynamics simulator (DDS) texture map, and the Cg programming language is used for writing the DDS texture map into a material script; and a graphic processing unit (GPU) is used for finishing the parsing and the compiling of the material script, and a video memory is loaded so that execution codes are formed; and the execution codes are used for finishing real-time simulation of the infrared rough sea surface. The infrared rough sea surface dynamic simulation method based on the texture has the advantages of high physical truthfulness and real-time performance and the like, can be applied to full-view simulation of the background of the sea surface, and provides an infrared radiation main background for infrared feature recognition of targets on the sea surface.

Description

technical field [0001] The invention belongs to the technical field of computer simulation, and specifically relates to texture-based infrared sea surface dynamic simulation, which can be used for panoramic simulation of sea surface background, and provides infrared radiation main background for infrared feature recognition of sea surface targets. Background technique [0002] With the continuous development of infrared technology, infrared imaging systems are widely used in the military field. Weapon systems using infrared imaging technology have the characteristics of high precision, strong anti-interference ability, and flexible use. Therefore, they have been valued by various countries and have been vigorously developed. The development of a new imaging system often requires continuous testing and evaluation of various performance indicators of the system. Simple laboratory tests cannot truly reflect the actual situation. If the field test method is used, it will consume...

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Application Information

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IPC IPC(8): G06F19/00
Inventor 黄曦吴鑫张俭郭晨光刘冬冬张建奇
Owner XIDIAN UNIV
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