Automated Detection of Microseismic Arrival Based on Convolutional Neural Networks

Table 1

Comparison of precision before and after noise adding.

Method	Error range point	Proportion (%)		Error pickup rate (%)		Average error (μs)
		Raw data	Added noise	Raw data	Added noise	Raw data	Added noise
AIC	0–5	91.96	63.02	2.19	9.51	2.79	12.16
	5–10	1.99	6.47
	10–50	3.86	21.01
	50+	2.19	9.51
U-net	0–5	78.97	73.92	3.34	4.80	6.38	11.64
	5–10	7.65	7.70
	10–50	10.03	13.58
	50+	3.34	4.80
Time window	0–5	47.20	41.00	11.51	28.55	12.63	31.07
	5–10	15.63	8.73
	10–50	25.66	21.72
	50+	11.51	28.55