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A Body Width Retrieval Method of Insects Based on the Eigenvalues ​​of Fully Polarized Radar Power Matrix

A power matrix and eigenvalue technology, applied in the field of insect radar, can solve problems such as inversion of insect body width, and achieve the effect of improving species recognition ability and measurement ability

Active Publication Date: 2021-09-17
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

Patent "A Inversion Method of Insect Characteristic Parameters Based on Polarization Power Matrix Eigenvalues" (Patent Application No. 201710671464.9) proposed inversion methods for insect body length parameters based on polarization power matrix eigenvalues ​​and polarization power matrix eigenvalues, but they cannot be used for inversion of insect body width
There is currently no insect body width inversion method

Method used

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  • A Body Width Retrieval Method of Insects Based on the Eigenvalues ​​of Fully Polarized Radar Power Matrix
  • A Body Width Retrieval Method of Insects Based on the Eigenvalues ​​of Fully Polarized Radar Power Matrix
  • A Body Width Retrieval Method of Insects Based on the Eigenvalues ​​of Fully Polarized Radar Power Matrix

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Embodiment Construction

[0023] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] The full polarization radar directly measures the full polarization echo of the target by transmitting the horizontal and vertical polarization signals at the same time or time-sharing, and receiving the horizontal and vertical polarization signals at the same time, that is, the HH, HV, VH and VV polarization echoes. Wave (H means horizontal, V means vertical; the first letter indicates the polarization mode of the received signal, and the second letter indicates the polarization mode of the transmitted signal). After post-processing the signals, the four kinds of polarization echoes directly correspond to the four elements of the target PSM, so as to obtain the target PSM. With the patent "A Inversion Method of Insect Characteristic Parameters Based on the Eigenvalues ​​of the Polarization Power Matrix" (patent application number 201710671461.5) an...

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Abstract

The invention discloses an insect body width inversion method based on the eigenvalue of the full-polarization radar power matrix, which uses the full-polarization radar to measure different insect samples, obtains the polarization scattering matrix of each sample, and calculates the Graves power matrix of the scattering matrix , and then obtain the two eigenvalues ​​λ of the power matrix 1 and lambda 2 ;Divide the insect samples into large and small insect groups according to their body length; 1 And the eigenvalue λ corresponding to each insect in the small insect group 2 As its characteristic parameter υ; with υ as an independent variable and insect body width W as a dependent variable, the fitting formula between υ and W is obtained by curve fitting; for the insect to be tested, its υ is obtained, and according to the fitting formula, Corresponding to the body width of the insect to be tested. The invention realizes the measurement of insect body width parameters for the first time, significantly improves the measurement ability of VLR to insect biological parameters, and will greatly improve the ability to identify species of migratory insects, which is of great significance for the research of aerial ecosystems and the control of pests .

Description

technical field [0001] The invention belongs to the technical field of insect radar, and in particular relates to an insect body width inversion method based on the eigenvalues ​​of a fully polarized radar power matrix. Background technique [0002] Insect migration is an important cause of pest outbreaks and disease pandemics, which seriously threatens the safety of food production in my country. If the effective monitoring of migratory insects can be realized, and a new system for early and accurate early warning of insect pests can be established, it can provide necessary decision-making information and intelligence support for the realization of "source" governance, and fundamentally guarantee the safety of food production in my country. Radar is one of the most effective means of monitoring insect migration in the air. Since the appearance of the first dedicated insect radar in the 1960s, it has been discovered that insects are co-orientated, clustered into layers and o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/88G01S7/02G01S7/41G01B7/02
CPCG01B7/02G01S7/024G01S7/418G01S13/88
Inventor 胡程李卫东王锐龙腾曾涛
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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