吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (3): 888-894.doi: 10.13229/j.cnki.jdxbgxb201403049

• Orignal Article • Previous Articles     Next Articles

Development of sensor used for grounded electrical source air-ground transient electromagnetic detection

LIN Jun1,FU Lei2,WANG Yan-zhang1,2,XU Jiang2,JI Yan-ju2,YANG Meng-meng2   

  1. 1. Key Lab of Geo-Information Exploration & Instrmentation, Jilin University, Changchun 130026, China;
    2.College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China
  • Received:2012-11-13 Online:2014-03-01 Published:2014-03-01

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Abstract: Based on one-dimensional layer model, the signal characteristics of the detection with probing depth of 1000 m were analyzed using the forward modeling. Furthermore, the basic performance parameters of the receiver sensor were determined. The physical model of the sensor was built, the sensor frequency characteristics under different matching conditions and their impacts on sensitivity were analyzed. On the basis of constructing the equivalent model of noise sources, the variations of noise sources with frequency characteristics were given. At the same time, the solution to inhibit high source impedance was given. An anomaly coil was used in field experiment in order to test the output characteristic of the sensor. Experiment results agree with theoretical calculation, and noise characteristic of the sensor can effectively meet the detection need.

Key words: information processing technology, induction coil sensor, equivalent model, noise analysis, frequency characteristics

CLC Number: 

  • TM937.1
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