Research on application of ground penetrating radar array method based on plane beam signal in diferent geological models

• Autorzy: Cui Fan , Chen Yi , Zhang Yongqi , Du Yunfei

Identyfikatory

DOI

10.1007/s11600-021-00684-5

• Języki publikacji: EN

Abstrakty

EN

The traditional common-offset ground penetrating radar method measures point by point along the survey line with a single transmitter and a single receiver. Due to the influence of the antenna radiation power and the low-pass filtering function of the earth medium, an intense amplitude gain cannot be obtained when the signal is intercepted. This article addresses a plane beam signal ground penetrating radar array observation method based on high radiation power gain. The transmitting antenna array simultaneously excites the pulse signal with the same center frequency. All the transmitted signals interfere with each other at the near surface to form a plane beam signal, and the electromagnetic energy is superimposed mutually to increase the radiation power. We applied the plane beam signal ground penetrating radar array method to different geological models constructed by the finite difference time-domain (FDTD) algorithm for numerical simulation in this research. Since there are various offsets in the array ground penetrating radar observation method, we introduce a composite frequency shift-perfect matching layer (CFS-PML) based on the recursive convolution method as the absorbing boundary condition. It eliminates the problem of secondary refection caused by the angle variation of the incident wave. The research result shows that the plane beam signal illuminates the target uniformly in space, can eliminate the discontinuity in profile data caused by the directivity of the antenna, improve the stability and quality of the echo signal, and enrich the target response parameters.

Słowa kluczowe

EN

plane beam signals; ground penetrating radar array; GPR array; finite difference time domain; FDTD; recursive convolution; complex frequency shift-perfect matching layer

PL

sygnały wiązki samolotu; radar penetrujący ziemię; tablica georadarowa; domena czasowa różnic skończonych; FDTD; rekurencyjne algorytmy splotowe; CFS-PML

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2021
• Tom: Vol. 69, no. 6
• Strony: 2241--2260
• Opis fizyczny: Bibliogr. 31 poz.

Twórcy

autor

Cui Fan

• School of Geosciences and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing, China
• State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing, China
• Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, Beijing, China

autor

Chen Yi

• School of Geosciences and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing, China

autor

Zhang Yongqi

• School of Geosciences and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing, China

autor

Du Yunfei

• School of Geosciences and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing, China

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