Improved Signal Models for Nuclear Quadrupole Resonance Spectroscopy

One of the applications of nuclear quadrupole resonance spectroscopy is the detection of prohibited substances in security checkpoints. Numerous signal processing and analysis techniques have been proposed over time to improve detection. However, they are based on signal models that do not exactly resemble the spin echo shape obtained in real measurements. This work represents a comparative study of several signal models for obtaining a more realistic representation of a spin echo response, that can be used in the future development and simulation of signal processing and analysis techniques for nuclear quadrupole resonance detection.