Insect body width inversion method based on full-polarization radar power matrix determinant
A power matrix and determinant technology, applied in the field of insect radar, can solve the problem that the body width of insects cannot be used for inversion, and achieve the effect of improving the ability of species identification and measurement.
Active Publication Date: 2020-04-14
BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent "A Inversion Method of Insect Characteristic Parameters Based on Polarization Power Matrix Eigenvalues" (Patent Application No. For 201710671464.9), the insect body length parameter inversion method based on the eigenvalue of the polarization power matrix and the determinant of the polarization power matrix was proposed, but it cannot be used for the inversion of the insect body width
There is currently no insect body width inversion method
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[0021] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0022] 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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The invention discloses an insect body width inversion method based on a full-polarization radar power matrix determinant, and the method comprises the steps: firstly measuring different insect samples through a full-polarization radar, and obtaining a polarization scattering matrix of each sample; obtaining a Graves power matrix of each insect sample according to the scattering matrix, and then obtaining a determinant value; taking the determinant value of each insect sample as an independent variable, taking the body width of the insect sample as a dependent variable, and obtaining a fittingformula between the insect determinant value and the body width through curve fitting; obtaining a determinant value corresponding to a to-be-detected insect according to the to-be-detected insect, and correspondingly obtaining the body width of the to-be-detected insect according to the fitting formula. According to the invention, measurement for the insect body width parameter is realized for the first time, the measurement capability of VLR on the insect biological parameter is significantly improved, the identification capability on the species of migratory insects is greatly improved, and the method has important significance in research on an air ecosystem and the treatment 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 determinant 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 oth...
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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