Processing and Identifying NQR Signals in Explosive Detection

Abstract

Abstract:

The principles of using nuclear quadrupole resonance (NQR) to detect explosive, as well as the methods of signal processing were introduced. The main error sources of NQR signal detection were analyzed. Several methods are proposed to eliminate the errors: correlation accumulation for eliminating thermal noises; single channel adaptive algorithm for eliminate ringing; and correlation detection to hold radiofrequency interference. The experimental results showed that the signal-to-noise ratio of NQR signals can be improved effectively using correlation detection, resulting in improved accuracy of signal detection.

Key words: nuclear quadrupole resonance, signal processing, correlation detection, nitroamine

CLC Number:

TJ51
TH841

MAO Yun-zhi*，GUO Hua-min. Processing and Identifying NQR Signals in Explosive Detection[J]. Chinese Journal of Magnetic Resonance.

References

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