A Novel SNR Enhancement Method for Complex Multimode Signals in ϕ-OTDR Systems Using SVMD and Shifting Window Pearson Correlation Coefficient. - Hao Wu 092; Siqi Jing; Chuandong Jiang; Zhenjun He; Ranhao Zhang; Weiran Wang 004; Zhiqin Liao; Luyao Meng; Fudong Zhang; Liang Wang (IEEE Trans. Instrum. Meas., 2025)