88
L. L. Ting et al.
Fig. 8.10 Comparison of wavelet de-noising and DTCWT-soft threshold
de-noising compared with DWT because DTCWT tends to preserve signal characteristics. However, wavelet de-noising eliminates abundant information and makes
the signals discontinuous.
To ascertain the reliability of the proposed method in leak detection, source localization results had been compared. Figure 8.11 shows it is difficult to identify a
Fig. 8.11 Cross-correlation ona original signalsb wavelet de-noised signalsc DTCWT-decomposed
signalsd DTCWT-soft threshold signals
L. L. Ting et al.
Fig. 8.10 Comparison of wavelet de-noising and DTCWT-soft threshold
de-noising compared with DWT because DTCWT tends to preserve signal characteristics. However, wavelet de-noising eliminates abundant information and makes
the signals discontinuous.
To ascertain the reliability of the proposed method in leak detection, source localization results had been compared. Figure 8.11 shows it is difficult to identify a
Fig. 8.11 Cross-correlation ona original signalsb wavelet de-noised signalsc DTCWT-decomposed
signalsd DTCWT-soft threshold signals