Characteristics of Orbit Determination with Short-Arc Observation by an Optical Tracking Network, OWL-Net

Table 2

Number of overlapped events for 11 domestic LEO satellites at the five OWL-Net stations during the selected week for orbit determination test by the number of weekly optical observation overlapped events (2014: 4th week; 2015: 34th week; and 2016: 18th week).

Satellite	Year	Total number of accesses	Number of overlapped events for short-arc optical observation strategy
			Full-arc	250	120	60	10	5
KITSAT-1	2014	160	18	12	6	2	0	0
	2015	114	6	9	6	1	0	0
	2016	106	16	12	3	0	0	0
KITSAT-2	2014	0	0	0	0	0	0	0
	2015	63	11	7	4	1	0	0
	2016	64	17	8	5	1	0	0
KITSAT-3	2014	0	0	0	0	0	0	0
	2015	20	6	2	2	2	0	0
	2016	42	2	2	1	1	0	0
KOMPSAT-1	2014	100	39	25	9	4	1	0
	2015	50	19	4	1	1	0	0
	2016	56	14	7	5	3	0	0
KOMPSAT-2	2014	0	0	0	0	0	0	0
	2015	21	5	2	2	1	0	0
	2016	36	2	1	0	0	0	0
KOMPSAT-3	2014	0	0	0	0	0	0	0
	2015	37	5	4	3	1	0	0
	2016	56	18	13	6	3	0	0
KOMPSAT-3A	2014	0	0	0	0	0	0	0
	2015	15	4	3	2	2	0	0
	2016	33	9	8	4	3	1	1
KOMPSAT-5	2014	104	22	14	7	4	1	1
	2015	32	8	4	2	0	0	0
	2016	20	3	3	2	2	0	0
STSAT-1	2014	100	42	25	13	6	0	0
	2015	62	24	12	3	2	0	0
	2016	60	18	10	8	3	0	0
STSAT-2C	2014	24	6	5	1	1	0	0
	2015	64	35	27	8	3	0	0
	2016	50	17	8	6	4	1	0
STSAT-3	2014	0	0	0	0	0	0	0
	2015	36	9	5	3	1	0	0
	2016	53	0	0	0	0	0	0