Research on the Synthesize of Multi-Frequency Waveform and High Precision Synchronization Technology in Frequency Domain Electromagnetic Transmitter

DOI

10.2991/iceeg-16.2016.108How to use a DOI?

Keywords

frequency domain electromagnetic transmitter,DDS,CPLD,multi-frequency waveform,high precision synchronization transmission

Abstract

As a critical component in electromagnetic exploration device, there are many issues in frequency domain electromagnetic transmitter to be addressed in the aspect of cover range of frequency points, operation efficiency under wild condition and high precision synchronization transmission as well as other aspects. The appli- cation of direct digital frequency synthesize technology (DDS) and the design of complex programmable logic device (CPLD) allow us to adjust the transmitting signal frequency of transmitter to any frequency within the range of 10kHz-0.01Hz; with the powerful logic operation capability of CPLD, a simple, reliable multi-frequency power supply wave shape with balanced power distribution is added in the basis of common frequency sweeping function, which significantly improved the operation efficiency of field electro- magnetic prospecting; the design is equipped with constant temperature crystal oscillator calibration circuit based on GPS, consequently realize the high precision synchronization transmitting and the technological support for the synchronic signal collection. It is approved in a series of sink experiments and wild experiments that the transmitting wave shape synthesized by the transmitter could fully satisfy the requirement of wild electromagnetic exploration, the frequency point is high in precision, with stable frequency and balanced multi-frequency power distribution, the transmitting synchronization error is in nanosecond class, the arrangement of dead time is rational.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Bo Wang
AU  - Ming Deng
AU  - Meng Wang
AU  - Zheng Xiang
AU  - Shuxiang Wang
PY  - 2016/06
DA  - 2016/06
TI  - Research on the Synthesize of Multi-Frequency Waveform and High Precision Synchronization Technology in Frequency Domain Electromagnetic Transmitter
BT  - Proceedings of the 7th International Conference on Environment and Engineering Geophysics & Summit Forum of Chinese Academy of Engineering on Engineering Science and Technology
PB  - Atlantis Press
SP  - 399
EP  - 401
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceeg-16.2016.108
DO  - 10.2991/iceeg-16.2016.108
ID  - Wang2016/06
ER  -