Robust Satellite Scheduling Approach for Dynamic Emergency Tasks

Table 3

The perturbation measurements of different task merging strategies.

Batch	Method		TM	NI	NIR	NID	PM
1	CTM	48	4	42	1	1	4
	TTM	47	1	44	1	1	4
2	CTM	47	4	38	3	2	5
	TTM	46	1	41	2	2	6
3	CTM	42	3	38	1	0	1
	TTM	41	2	38	1	0	2
4	CTM	47	7	36	1	3	4
	TTM	46	1	39	1	4	6
5	CTM	44	3	40	0	1	1
	TTM	42	1	43	0	0	1

Note: : the number of scheduled emergency tasks, PM: the number of adjusted tasks in the schedules, NITM: the number of emergency tasks inserted by task merging, NI: the number of emergency tasks inserted directly, NIR: the number of emergency tasks inserted by rearranging, and NID: the number of emergency tasks inserted by deleting.