Algorithm Used to Detect Weak Signals Covered by Noise in PIND

Table 1

The cross-correlation coefficient was received by averaging 100 tests.

No.	Package types	Particle		Result
1	1/5 crystal cover	0.01 mg tin grain	0.0993	Nonexistent
2	1/5 crystal cover	0.01 mg tin grain	0.2952	Nonexistent
3	1/5 crystal cover	0.01 mg tin grain	0.6410	Existent
4	1/5 crystal cover	0.01 mg tin grain	0.5545	Existent
5	1/2 crystal cover	0.01 mg tin grain	0.6716	Existent
6	1/2 crystal cover	0.01 mg tin grain	0.4590	Existent
7	1/2 crystal cover	0.01 mg tin grain	0.0250	Nonexistent
8	TO-5	0.01 mg tin grain	0.5944	Existent
9	TO-5	0.01 mg tin grain	0.6538	Existent
10	TO-5	0.01 mg tin grain	0.4751	Existent
11	TO-3	0.01 mg tin grain	0.5304	Existent
12	TO-3	0.01 mg tin grain	0.5202	Existent
13	TO-3	0.01 mg tin grain	0.2746	Nonexistent
14	TO-3	0.01 mg tin grain	0.4588	Existent