Transmitting oscillation suppression of low-Tc SQUID TEM system based on RC serial and multi-parallel capacity snubber circuit

Ji, Yanju; Li, Zongwei; Liu, Rong; Xie, Lijun; Xie, Xiaoming; Du, Shangyu; Lin, Jun; Wang, Yuan

doi:10.1007/s11771-018-3897-2

Cited by 1 publication

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For halfsine and triangular wave excitations, the on-time response amplitude does not vary essentially with the detection of different conductivity targets. Simultaneous on-time and off-time measurements with half-sine and triangular waves can be used in ATEM, which helps to improve the signal-to-noise ratio and detection resolution for high resistivity targets [11,12].…”

Section: Introductionmentioning

confidence: 99%

Combined wave emission system based on dual resonance method for airborne transient electromagnetic detection

Zhang

Pang

Liu

et al. 2023

Meas. Sci. Technol.

View full text Add to dashboard Cite

To improve the detection efficiency of airborne transient electromagnetic method (ATEM) and reduce the times of flight experiment, a dual resonance-based combined wave emission circuit is proposed in this paper, which realizes the combined emission of half-sine wave and triangular wave through the selection of different resonant branches. Based on the operating principle of the proposed emission circuit, the model of second-order RLC equivalent circuit is established. Then, the generation process of the combined wave is analyzed, and the segmentation control method is proposed. Finally, the feasibility and effectiveness of the proposed combined wave emission system are verified by simulation model building and prototype testing, and the results show that the emission current is of good quality and high stability. Compared with the traditional emission of single wave current, the combined wave current has the advantages of large magnetic moment of half-sine wave and rich high frequency components of triangular narrow pulse, which can effectively expand the detection range and improve the measurement efficiency of ATEM.

show abstract

Section: Introductionmentioning

confidence: 99%