●SGLI Missing Data List
Here shows total missing information of GCOM-C/SGLI data during routine observation phase (from March 28, 2018). Initialcheckout period (until March 28) is not included because various operations were carried out. The bottom list (Table 2) shows
update information of observation plan which includes the different resolution observation or tilt operation from plan, etc..
Table 1. Missing Data List
SensorFrom(UT)

To(UT)VNR (POL)VNR (NP)IRS (SWI)
IRS (TIR)VNR (PL-2)
VNR (NP)VNR (POL)
IRS (SWI)
IRS (TIR)VNR (NP-R)
IRS (TIR)VNR (NP-N)
IRS (SWI)
IRS (TIR)VNR (NP-N)
VNR (NP)VNR (POL)
IRS (SWI)
IRS (TIR)VNR (NP-L)
VNR (NP)VNR (POL)VNR (PL-1)
VNR (NP)VNR (POL)VNR (POL)VNR (NP)IRS (SWI)
IRS (TIR)VNR (NP)VNR (POL)VNR (NP)VNR (POL)VNR (NP)IRS (SWI)
IRS (TIR)VNR (POL)VNR (NP)VNR (POL)VNR (NP)VNR (POL)
IRS (SWI)VNR (NP)VNR (POL)VNR (NP)VNR (POL)VNR (NP)VNR (NP)IRS (TIR)VNR (NP)VNR (POL)VNR (POL)VNR (NP)IRS (SWI)VNR (POL)VNR (NP)IRS (SWI)
IRS (TIR)

2024/08/12 00:19:48
2024/08/12 00:19:48
2024/08/12 00:22:54
2024/08/12 00:22:57
2024/04/30 14:23:05
2024/03/22 15:14:10
2024/03/22 15:14:10
2024/03/22 15:14:09
2024/03/22 15:14:09
2024/01/26 14:42:15
2023/08/21 03:16:24
2023/06/22 12:31:19
2023/06/12 07:07:33
2023/06/12 07:07:33
2023/06/05 15:02:16
2023/04/29 14:43:10
2023/04/29 14:43:10
2023/04/29 14:43:10
2023/04/29 14:43:10
2023/04/11 14:21:33
2023/01/30 05:05:45
2023/01/30 05:03:25
2022/12/30 14:21:50
2022/11/17 06:05:46
2022/11/17 06:04:41
2021/11/26 15:16:22
2021/11/26 15:16:22
2021/11/26 15:16:22
2021/11/26 15:16:22
2021/04/12 15:47:23
2020/10/29 07:09:50
2020/06/19 06:15:04
2020/06/19 06:12:52
2020/03/02 11:39:57
2020/03/02 11:39:57
2020/03/02 11:39:57
2020/03/02 10:48:35
2019/12/15 05:40:02
2019/12/15 05:38:26
2019/10/20 05:16:27
2019/10/20 05:16:35
2019/06/19 02:19:06
2019/02/02 08:21:44
2019/02/02 08:19:54
2019/01/12 14:44:43
2019/01/06 00:57:14
2018/12/28 14:35:53
2018/12/28 14:27:22
2018/12/28 14:27:21
2018/08/04 10:06:55
2018/08/04 10:04:39
2018/05/24 00:03:20
2018/05/24 00:03:13
2018/05/24 00:03:09
2018/05/21 13:50:55
2018/05/21 13:50:55
2018/05/21 13:50:55
2018/05/21 13:50:55

2024/08/16 00:56:58
2024/08/16 00:59:42
2024/08/16 00:35:31
2024/08/16 00:15:03
2024/04/30 14:23:05
2024/03/22 16:12:06
2024/03/22 16:12:06
2024/03/22 16:12:05
2024/03/22 16:12:05
2024/01/26 14:42:15
2023/08/21 03:16:24
2023/06/22 12:31:19
2023/06/12 07:07:33
2023/06/12 07:07:33
2023/06/05 15:02:16
2023/04/29 14:43:15
2023/04/29 14:43:15
2023/04/29 14:43:15
2023/04/29 14:43:15
2023/04/11 14:21:33
2023/01/30 11:02:50
2023/01/30 11:07:10
2022/12/30 14:21:50
2022/11/17 08:40:32
2022/11/17 08:43:42
2021/11/27 06:54:45
2021/11/27 06:52:15
2021/11/27 07:32:44
2021/11/27 07:37:33
2021/04/12 15:47:23
2020/10/29 07:09:50
2020/06/19 08:48:56
2020/06/19 08:52:25
2020/03/02 11:47:28
2020/03/02 11:47:28
2020/03/02 11:47:28
2020/03/02 12:29:32
2019/12/15 14:58:10
2019/12/15 15:00:30
2019/10/20 09:35:50
2019/10/20 09:35:42
2019/06/19 02:19:06
2019/02/02 10:55:26
2019/02/02 11:00:50
2019/01/12 14:44:44
2019/01/06 00:57:15
2018/12/28 14:35:54
2018/12/28 14:27:23
2018/12/28 14:27:22
2018/08/04 12:40:28
2018/08/04 12:42:45
2018/05/24 01:01:40
2018/05/24 00:56:59
2018/05/24 00:57:03
2018/05/22 11:07:16
2018/05/22 11:07:16
2018/05/22 11:07:15
2018/05/22 11:07:15

duration
Comments
hh:mm:ss(※ : relationship with Table 2.)
96:37:10 Tentative stop of sensor operation
96:39:54 Tentative stop of sensor operation
96:12:37 Tentative stop of sensor operation
95:52:06 Tentative stop of sensor operation
0:00:01 Checksum Error
0:57:56 Tentative stop of grand station operation
0:57:56 Tentative stop of grand station operation
0:57:56 Tentative stop of grand station operation
0:57:56 Tentative stop of grand station operation
0:00:01 Checksum Error
0:00:01 Checksum Error
0:00:01 Checksum Error
0:00:01 influence of temporary satellite attitude anomalies
0:00:01 influence of temporary satellite attitude anomalies
0:00:01 Checksum Error
0:00:05 Packet loss
0:00:05 Packet loss
0:00:05 Packet loss
0:00:05 Packet loss
0:00:01 Checksum Error
5:57:05 Tentative stop of POL-tilt operation(※7)
6:03:45 Tentative stop of POL-tilt operation(※7)
0:00:01 Checksum Error
2:33:52 Tentative stop of POL-tilt operation(※6)
2:39:01 Tentative stop of POL-tilt operation(※6)
15:38:23 Tentative stop of MDR operation
15:35:53 Tentative stop of MDR operation
16:16:22 Tentative stop of MDR operation
16:21:11 Tentative stop of MDR operation
0:00:01 Packet loss
0:00:01 Packet loss
2:33:52 Tentative stop of POL-tilt operation(※5)
2:39:33 Tentative stop of POL-tilt operation(※5)
0:07:31 Packet loss
0:07:31 Packet loss
0:07:31 Packet loss
1:40:57 Packet loss
9:18:08 Tentative stop of POL-tilt operation(※4)
9:22:04 Tentative stop of POL-tilt operation(※4)
4:19:23 Tentative stop of POL-tilt operation(※3)
4:19:07 Tentative stop of POL-tilt operation(※3)
0:00:01 Packet loss
2:33:42 Tentative stop of POL-tilt operation(※2)
2:40:56 Tentative stop of POL-tilt operation(※2)
0:00:01 Packet loss
0:00:01 Packet loss
0:00:01 X-downlink data decode loss
0:00:01 X-downlink data decode loss
0:00:01 X-downlink data decode loss
2:33:33 Tentative stop of POL-tilt operation(※1)
2:38:06 Tentative stop of POL-tilt operation(※1)
0:58:20 Command operation inconsistency
0:53:47 Command operation inconsistency
0:53:54 Command operation inconsistency
21:16:21 Tentative stop of MDR operation
21:16:21 Tentative stop of MDR operation
21:16:21 Tentative stop of MDR operation
21:16:21 Tentative stop of MDR operation

Table 2. Observation Plan Update
SensorFrom(UT)

To(UT)

duration
hh:mm:ss

Comments(※ : relationship with Table 1.)

VNR (NP)VNR (POL)
IRS (SWI)
IRS (TIR)

2023/05/01 04:19

2023/05/01 04:19

0:00:04

Different observation pitch angle because of
the WDT recovery .

VNR (NP)VNR (POL)

2023/01/30 01:09

2023/01/30 11:12

Different observation sequence because of the10:03:00 POL-tilt recovery operation corresponds tothe missing data .(※7)

VNR (NP)VNR (POL)

2022/11/17 00:26

2022/11/17 08:48

Different observation sequence because of the
8:22:00 POL-tilt recovery operation corresponds tothe missing data .(※6)

VNR (NP)VNR (POL)

2020/06/19 00:35

2020/06/19 08:57

Different observation sequence because of the
8:22:00 POL-tilt recovery operation corresponds tothe missing data .(※5)

VNR (NP)VNR (POL)
IRS (SWI)
IRS (TIR)

2020/03/10 00:36

2020/03/10 00:37

0:00:48

VNR (NP)VNR (POL)

2019/12/15 03:21

2019/12/15 15:07

Different observation sequence because of the
11:46:00 POL-tilt recovery operation corresponds tothe missing data .(※4)

VNR (NP)VNR (POL)

2019/10/20 01:19

2019/10/20 09:41

Different observation sequence because of the
8:22:00 POL-tilt recovery operation corresponds tothe missing data .(※3)

VNR (NP)VNR (POL)

2019/02/01 15:56

2019/02/02 11:41

Different observation sequence because of the
19:45:00 POL-tilt recovery operation corresponds tothe missing data .(※2)

VNR (NP)VNR (POL)
IRS (SWI)
IRS (TIR)

2018/11/22 00:00

2018/11/22 08:33

8:33:00

VNR (NP)VNR (POL)2018/08/04 04:38

2018/08/04 12:52

Different observation sequence because of the
8:14:00 POL-tilt recovery operation corresponds tothe missing data .(※1)

Different observation pitch angle because of
the WDT recovery .

Command operation inconsistency (tiltoperation is stop)

Update：2024/08/16