Fig. 1. Flow chart of technology roadmap of the experimental research

Fig. 2. The Xception architecture

Fig. 3. THz absorption coefficient spectrum of RDX in different frequency resolution

Fig. 4. (a) The wavelet transform graph of explosive RDX with different frequency resolutions under 2 mm soil; (b) The wavelet transform graph of explosive RDX under 0.5 mm cardboard, 4 mm plastic and 2 mm soil shade; (c) The wavelet transform graph of explosive TNT under 0.5 mm cardboard, 4 mm plastic and 2 mm soil shade; (d) The wavelet transform graph of starch under 0.5 mm cardboard, 4 mm plastic and 2 mm soil shade