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Journal of Electrical and Computer Engineering
Volume 2015, Article ID 864153, 6 pages
Research Article

Design of Wireless Automatic Synchronization for the Low-Frequency Coded Ground Penetrating Radar

1Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190, China
2University of Chinese Academy of Sciences, Beijing 100049, China
3Chinese Academy of Sciences, Beijing 100864, China

Received 5 February 2015; Revised 26 May 2015; Accepted 27 May 2015

Academic Editor: Ahmed El Wakil

Copyright © 2015 Zhenghuan Xia et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Low-frequency coded ground penetrating radar (GPR) with a pair of wire dipole antennas has some advantages for deep detection. Due to the large distance between the two antennas, the synchronization design is a major challenge of implementing the GPR system. This paper proposes a simple and stable wireless automatic synchronization method based on our developed GPR system, which does not need any synchronization chips or modules and reduces the cost of the hardware system. The transmitter omits the synchronization preamble and pseudorandom binary sequence (PRBS) at an appropriate time interval, while receiver automatically estimates the synchronization time and receives the returned signal from the underground targets. All the processes are performed in a single FPGA. The performance of the proposed synchronization method is validated with experiment.