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The Design of Pseudo-random Signal Transmitting Electromagnetic Detection System Based on FPGA

  • Shiqiang Li
  • Guoqiang Liu
  • Yanhong Li
  • Zhengwu Xia
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 238)

Abstract

In order to overcome the shortcomings of the single transmission frequency and poor anti-interference ability of traditional geological exploration systems, this article designs a pseudo-random signal transmitting electromagnetic launch system based on the highly integrated, convenient, and flexible design characteristics of field programmable gate array (FPGA). Using linear feedback shift register (LFSR) and technology of direct digital frequency synthesis (DDS), the output signal has a random frequency, and it can effectively avoid the influence of the outside electromagnetic interferences which are difficult to remove in the past, and can increase the noise ratio in a low power to get satisfactory results. At the same time, it can transmit signals of multiple different frequencies in one power supply to improve the detection efficiency. It’s suitable for the exploration and development of our multi-mountain mineral.

Keywords

Field Programmable Gate Array Control Word Phase Accumulator Linear Feedback Shift Register Primitive Polynomial 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

Thanks to National Natural Science Foundation of China (51137004, 50977084, 61002036), Chinese Academy of Sciences innovation fund (CXJJ-11-Q75), Beijing Nova Program (2009B48), and National Science and Technology Support Program (2009BAI71B05).

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Shiqiang Li
    • 1
  • Guoqiang Liu
    • 1
  • Yanhong Li
    • 1
  • Zhengwu Xia
    • 1
  1. 1.Institute of Electrical EngineeringChinese Academy of SciencesBeijingChina

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