Systems Engineering and Electronics ›› 2020, Vol. 42 ›› Issue (5): 1050-1056.doi: 10.3969/j.issn.1001-506X.2020.05.11

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Golay complementary code radar for high signal-to-clutter ratio detection of underground pipeline

Yang LIU1,2(), Jingxia LI1,2(), Tian GUO1,2(), Bingjie WANG1,2(), Hang XU1,2(), Li LIU1,2()   

  1. 1. Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China
    2. College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China
  • Received:2019-07-04 Online:2020-04-30 Published:2020-04-30
  • Supported by:
    国家自然科学基金(41604127);国家自然科学基金(61705007);国家自然科学基金(41704147);国家自然科学基金(61601319);山西省自然科学基金(201801D221185);山西省自然科学基金(201701D221114)

Abstract:

Traditional ultra wideband (UWB) impulse radar has to balance the resolution and detection distance. In order to solve this problem, a ground penetrating radar system based on the high-speed Golay complementary code is proposed. A pair of the Golay complementary code is used as the probe signal. By adding the two correlation operation results together, the side lobes of the correlation can be completely eliminated and its peak value is increased by 2 times. The Golay complementary code is applied to underground pipe location. The simulation and experimental results show that the UWB ground penetrating radar based on the high-speed Golay complementary code can effectively locate underground metal or non-metal pipe. Furthermore, compared with the chaotic pulse position modulation signals, under the same experimental conditions, the former can significantly improve the signal-to-clutter ratio (SCR). Thus, it can improve the detection depth while the resolution is still high. Thus, it demonstrates the feasibility and superiority of the proposed method.

Key words: Golay complementary code, sidelobe, pipe detection, chaotic pulse position modulation signal

CLC Number: 

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