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A method and device for reconstructing target electromagnetic scattering characteristic data

A technology of target electromagnetic scattering and characteristic data, applied in radio wave measurement systems, instruments, etc., can solve the problems of unrealizable and low reconstruction accuracy of complex targets, and achieve high efficiency, high-efficiency compression and real-time loading, and guaranteed reconstruction The effect of precision

Active Publication Date: 2020-09-25
BEIJING INST OF ENVIRONMENTAL FEATURES
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problem of low reconstruction accuracy of complex targets and the inability to achieve efficient compression and real-time loading of target full-space target characteristic data existing in existing target electromagnetic scattering characteristic data reconstruction methods

Method used

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  • A method and device for reconstructing target electromagnetic scattering characteristic data
  • A method and device for reconstructing target electromagnetic scattering characteristic data
  • A method and device for reconstructing target electromagnetic scattering characteristic data

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Embodiment 1

[0036] Such as figure 1 As shown, the method for reconstructing target electromagnetic scattering characteristic data provided by the embodiment of the present invention includes:

[0037] Step S101: Construct a three-dimensional echo signal model of the target, and convert the three-dimensional echo signal model into a state space equation.

[0038] Step S102: Construct a generalized Hankel matrix according to the scattered echo data of the target, and solve the state space equation based on the generalized Hankel matrix to determine the parameter estimation value of the target scattering center.

[0039] Wherein, the parameter estimation value of the target scattering center may include: the scattering center position coordinate estimation value, the scattering center type parameter estimation value, and the scattering center intensity estimation value.

[0040] Further, before step S102, the following step may be further included: obtaining the scattered echo data of the target base...

Embodiment 2

[0095] Such as Figure 8 As shown, the device 800 for reconstructing target electromagnetic scattering characteristic data provided by the embodiment of the present invention includes: a construction module 801, a determination module 802, and a reconstruction module 803.

[0096] The construction module 801 is used to construct a three-dimensional echo signal model of the target, and convert the three-dimensional echo signal model into a state space equation.

[0097] Exemplarily, the construction module 801 constructs a three-dimensional echo signal model of the target, and converts the three-dimensional echo signal model into a state space equation includes: the construction module 801 constructs a three-dimensional continuous echo signal model of the target according to the GTD model; 801 discretizes the three-dimensional continuous echo signal model based on the principle of small-angle imaging to obtain a three-dimensional discretized echo signal model; the construction module...

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Abstract

The invention discloses a reconstruction method and device for target electromagnetic-scattering-characteristic data, and relates to the technical field of radar imaging. The method includes the stepsthat a three-dimensional echo signal model of a target is built, and the three-dimensional echo signal model is converted into a state-space equation; according to scattering echo data of the target,a generalized Hankel matrix is built, and the state-space equation is solved based on the Hankel matrix to determine a parameter estimating value of the target scattering center; according to the parameter estimating value of the target scattering center, electromagnetic-scattering-characteristic data of the target is reconstructed. Through the steps, the reconstruction accuracy of the target electromagnetic-scattering-characteristic data is guaranteed, and efficient compression and real-time loading of the full-space target electromagnetic-scattering-characteristic data can also be achieved.

Description

Technical field [0001] The invention relates to the technical field of radar imaging, in particular to a method and device for reconstructing target electromagnetic scattering characteristic data. Background technique [0002] With the continuous development of modern radar technology and the ever-increasing demand for electromagnetic scattering characteristic data of full-space and fully polarized targets, the pressure to store and utilize these massive target electromagnetic scattering characteristic data is also increasing. So far, some progress has been made in the reconstruction of target electromagnetic scattering characteristic data based on electromagnetic models, but there are still some problems: [0003] First, the reconstruction of target electromagnetic scattering characteristic data based on one-dimensional or two-dimensional electromagnetic model has the following defects: the number of scattering centers extracted in the whole space is large, so it is impossible to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 陈轩赵涛董纯柱张向阳
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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