A High-Precision Fatigue Detecting Method for Air Traffic Controllers Based on Revised Fractal Dimension Feature

Table 1

The FDs for some marked voice instructions. Instead of giving the ATCs’ real name in the form, they are replaced by letters from A to N.

Voice instruction	ATC	Sex	Position	FD	State
1	M	M	Area	1.773	Fatigue
2	D	M	Tower	1.792	Fatigue
3	C	M	Tower	1.829	Fatigue
4	L	M	Area	1.849	Fatigue
5	B	M	Tower	1.862	Normal
6	I	M	Approach	1.863	Fatigue
7	N	M	Area	1.876	Normal
8	E	M	Area	1.882	Normal
9	H	M	Approach	1.887	Fatigue
10	J	M	Approach	1.890	Normal
11	K	M	Approach	1.898	Normal
12	F	M	Approach	1.900	Normal
13	A	F	Tower	1.905	Normal
14	G	M	Approach	1.927	Normal