Detection of Magnetic Anomaly Signal Based on OBF Decomposition in Wavelet Domain
Zhenyu Yang · Journal of Projectiles.Rockets.Missiles and Guidance · 2011
Considering the bad effect of OBF decomposition algorithm in non-Gaussian noise,a detection algorithm for magnetic anomaly signal based on OBF decomposition in wavelet domain was proposed.First,the raw signal was decomposed by wavelet transform,and the low frequency components in last level were taken out.Then,the low frequency components were decomposed by OBF and the energy signal was taken out for threshold detection.The results of experiment show that the algorithm improves the effect for detecting weak magnetic anomaly signal in non-Gaussian noise environment.