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Underground non-metallic pipeline detection device and method based on polarization chaotic radar

A non-metallic and chaotic technology, applied in the field of underground non-metallic pipeline detection, can solve the problem of low detection sensitivity, and achieve the effects of improving anti-interference ability, improving detection sensitivity and improving signal-to-noise ratio.

Active Publication Date: 2019-02-05
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0007] The purpose of the present invention is to provide an underground non-metallic pipeline detection device and its positioning method based on polarization chaotic radar, so as to solve the problem of low detection sensitivity of non-metallic buried objects in the prior art

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  • Underground non-metallic pipeline detection device and method based on polarization chaotic radar

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Embodiment Construction

[0017] The specific mode of the present invention will be further described below in conjunction with the accompanying drawings.

[0018] Implement a kind of underground non-metal pipeline detection device based on polarization chaotic radar of the present invention, as figure 1 As shown, it includes: chaotic signal generating device 1, power divider 2 (bandwidth: 20MHz-3GHz), first amplifier 3 (bandwidth: 85KHz-10GHz), polarization switching device 4, broadband vertically polarized transmitting antenna 5a, broadband Horizontally polarized transmitting antenna 5b, broadband vertically polarized receiving antenna 6a, broadband horizontally polarized receiving antenna 6b, second amplifier 7 (bandwidth: 9KHz-1GHz, gain: 32.5dB), third amplifier 8 (bandwidth: 9KHz-1GHz , Gain: 32.5dB), signal acquisition device 9, signal processing device 10, vertical emission and vertical reception signal identification channel 11, vertical emission and horizontal reception signal identification ...

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Abstract

The invention relates to the technical field of underground nonmetal pipe detection, specifically an underground nonmetal pipe high-sensitivity detection technology based on a polarizing chaotic radar. The invention solves a problem that a conventional ground penetrating radar is low in detectivity and sensitivity for the nonmetal pipe. An underground nonmetal pipe detection device based on the polarizing chaotic radar comprises a chaotic signal generation device, a power divider, an amplifier, a polarization switching device, a broadband polarization transmitting / receiving antenna, an adjustable electric delay line, a signal collection device, a signal processing device, a polarization recognition channel, and a display device. The device is suitable for the detection fields of underground middle and shallow nonmetal weak targets.

Description

technical field [0001] The invention relates to the technical field of underground non-metallic pipeline detection, in particular to a high-sensitivity detection technology for underground non-metallic pipelines based on polarization chaotic radar. Background technique [0002] With the construction and development of urbanization, the types and quantities of underground pipelines are increasing rapidly, and various pipelines overlap and crisscross. However, due to the influence of errors, leaks and large deviations in the data of underground pipelines, etc., the misjudgment of the distribution of underground pipelines was caused, which led to frequent accidents during the construction process. Therefore, the detection of underground pipelines has become an indispensable link in the construction of urban underground projects. [0003] A variety of geophysical methods can be used to detect underground pipelines. However, the traditional pipeline detection methods (such as: ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/12
CPCG01V3/12
Inventor 李静霞徐航刘丽王冰洁张建国王云才
Owner TAIYUAN UNIV OF TECH