Canceling strong and complex interference in NQR-based landmine detection

Abstract

Nuclear Quadrupole Resonance (NQR) signal detection is a promising explosives detection technology with applications to humanitarian demining. NQR works in the radiofrequency range, and one challenge to using it in such an application is coping with radiofrequency interference. We herein present an algorithm that cancels strong and complex radiofrequency interference (either stationary or nonstationary) improving the utility of NQR-based landmine detection in humanitarian demining. The algorithm has been tested on both simulated and measured data, and demonstrates good performance in NQR detection, in the presence of strong and complex interference.