Insect dimension measurement method based on Rayleigh region analysis scattering modeling

A measurement method and technology for insects, applied in the field of insect radar, which can solve problems such as ambiguity

Active Publication Date: 2016-09-07
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

Even if the species of insects are the same, the difference in individual mass is relatively obvious, so there is great ambiguity in the classification only by mass, and insects can only be distinguished in large categories

Method used

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  • Insect dimension measurement method based on Rayleigh region analysis scattering modeling
  • Insect dimension measurement method based on Rayleigh region analysis scattering modeling
  • Insect dimension measurement method based on Rayleigh region analysis scattering modeling

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Experimental program
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Embodiment

[0110] The CST simulation results are compared with the theoretical formula calculation results to verify the modeling accuracy and parameter inversion effect. The simulator is the method of moments. Insects are modeled with a rotationally symmetric medium ellipsoid model. The semi-axis lengths of typical migratory insects (such as planthoppers) are a=1.5mm, b=0.5mm. The CST simulation model is as follows: Figure 6 shown.

[0111] The coordinates of the three radars are (500,0,0), (0,500,0), (-500,0,0), the coordinates of the insect are (100,100,)9, where 0 is in meters, and the axis of the insect is oriented at The angle parameter in the global coordinate system is θ=60°, The geometric relationship is shown as Figure 7 .

[0112] The full-polarization RCS pattern (red dotted line) of the three radars simulated by CST is compared with the full-polarization RCS pattern (blue solid line) calculated according to the full-polarization RCS formula, as shown in Figure 8 ~ Fi...

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Abstract

The invention discloses an insect dimension measurement method based on Rayleigh region analysis scattering modeling, and the method comprises the steps: carrying out the Rayleigh region scattering modeling of an insect through employing a rotational symmetry dielectric ellipsoid; measuring the three-dimensional axon direction, body length and width of the insect through at least two radars, thereby achieving the further inversion of the mass and the body length to body width ratio of the insect. Compared with a conventional insect radar dimension inversion method, the method can greatly increase the amount of obtained information, so the method can improve the insect type recognition capability of the insect radars.

Description

technical field [0001] The invention belongs to the technical field of insect radar, and in particular relates to an insect size measurement method based on Rayleigh zone analytical scattering modeling. Background technique [0002] Insect radar emits a beam of electromagnetic waves to shoot insects flying in the air. The body of the insect (which has properties similar to raindrops) will cause the electromagnetic signal to reflect to the surroundings. Part of the reflected signal returns to the direction of the radar and is received by the radar. Using the orientation and The distance measurement property can calculate the parameters of insect migratory azimuth, height, moving direction and density, etc., which provides a new research method for obtaining the behavioral parameters of insect high-altitude flight, and promotes migratory entomology from qualitative research to quantitative analysis. The great-leap-forward development of insects has gained a new understanding o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/02G01S13/88
CPCG01B7/02G01S13/88
Inventor 龙腾胡程刘长江曾涛王锐
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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