Research on AE Source Location of Linear and Plane Rock Mass

Table 18

Time differences among different sensors determined based on cross-correlation wavelet packet decomposition.

Focal number	Time difference (μs)
	Δt12	Δt13	Δt14	Δt23	Δt24	Δt34
C1	−26	−79.7	−26.7	−53	−0.7	52.3
C2	96	44.3	56.3	48.3	60.7	27
C3	22.3	−10	9.3	−32	1	33.3
C4	24.3	−38.3	−33.3	−82.7	−57.7	5.3
C5	−14.3	−31	33.3	−16	47.7	63.7
C6	57.3	33.3	5.7	−11	−50.7	−34.3