Magnetic dipole signal detection and localization using subspace method

摘要: The likelihood ratio method has been reported for signal processing involving the detection problem (magnetic anomaly detection) of magnetic dipole target (such as a sunken ship) by sensor on board an aircraft. However, observed waveform is not uniquely determined and varies with moment direction target. Therefore, many reference functions are needed detection. It challenge to carry out stable small computational overhead. In this paper, based fact that mathematical model linear combination three types electromagnetically, subspace proposed. Use wavelet transform preliminary process discussed improvement capability in background noise. Further, order estimate source target, extended estimation proposed does require complex nonlinear search. Finally, means computer experiment, it shown effective low S/N robust possible localization method. © 2002 Scripta Technica, Electron Comm Jpn Pt 3, 85(5): 23–34,