Full-polarization target identification and classification method based on rotary single-polarization ground penetrating radar

Abstract

The invention discloses a full-polarization target identification and classification method based on a rotary single-polarization ground penetrating radar, and belongs to the field of engineering geological prospecting. The method comprises the following steps: obtaining full-polarization scattering matrix data of a target body through the single-polarization ground penetrating radar with a rotary single-polarization antenna; performing feature extraction on the complete polarization scattering matrix data by using an H-alpha decomposition method to obtain a scattering feature parameter scattering entropy H and an average scattering angle alpha for identifying a target body; and comparing the scattering entropy H and the average scattering angle alpha value of the target body with the existing H-alpha identification graph, and determining the type of the target body according to the distribution positions of the scattering entropy H and the average scattering angle alpha value in the H-alpha identification graph. According to the invention, the existing commercial single-polarization ground penetrating radar can be directly upgraded into the full-polarization ground penetrating radar under the condition that the existing ground penetrating radar equipment is not changed or the equipment cost is not increased, so that the efficiency and the accuracy of the ground penetrating radar for detecting, positioning, identifying and classifying pipeline type linear targets are improved.

Description

technical field [0001] The invention belongs to the field of engineering geological exploration, and in particular relates to a full-polarization target identification and classification method based on a rotary single-polarization ground-penetrating radar. Background technique [0002] At present, the ground penetrating radar system has been widely used in the non-destructive detection and identification of underground targets. However, due to the complex and diverse urban underground environment, there are still great challenges for the existing ground penetrating radar system to accurately locate, identify and classify underground pipelines. . Generally speaking, commercial ground penetrating radar systems are mostly single-polarization radar systems, which can only obtain single-polarization data. To separate linear targets such as pipelines from other nonlinear targets (such as culverts and formations, etc.), we can only rely on different detection methods. Intensity d...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a rotary single-polarization ground-penetrating radar based The full-polarization target identification and classification method can use single-polarization commercial ground-penetrating radar to obtain full-polarization radar data, and effectively identify and classify underground pipeline targets.

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