VLBI Frequency Comparison in 2018 Ver.0

[ Ver.1] [ Ver.2] [ Ver.3] [ Ver.4] [ Ver.5]

1. Experiments List

Experiment information and analysis results is here.

Month	Exp.
2018 Aug.	14Aug.(iv8226), 21Aug.(iv8232), 31Aug.(iv8243)
2018 Oct.	04Oct.(gv8278), 14Oct.(gv8287), 24Oct.(gv8297)
2018 Nov.	04Nov.(gv8308), 14Nov.(gv8318), 24Nov.(gv8328),
2018 Dec.	04Dec.(gv8338), 15Nov.(gv8348), 25Nov.(gv8358)
2019 Jan.	15Jan.(gv9015), 25Jan.(gv9025)
2019 Feb.	04 Feb.(gv9035), 14Feb.(gv9045)

2. Frequency Link

2.1 Summary

Sr-Yb Link

Freq. Link with Single Experiment

LINK	14-15 Feb.2019	25-26 Jan.2019	15-16 Jan.2019	25-26 Dec.2018	15-16 Dec.2018	5-6 Dec.2018	24-25 Nov.2018	14-15 Nov.2018	4-5 Nov.2018	14-15 Oct.2018
VLBI HM3(NICT)-HM(INAF)	+6.990(7)e-13 s/s	7.097(3)e-13 s/s	7.176(3)e-13 s/s	3.787(6)e-13 s/s	3.807(16)e-13 s/s	3.910(21)e-13 s/s	3.933(27)e-13 s/s	3.984(12)e-13 s/s	4.014(15)e-13 s/s	4.106(13)e-13 s/s
IPPP HM3(NICT)-HM(INAF)	--			3.7786(17)e-13 [s/s]	3.814(2)e-13 [s/s]	3.872(2)e-13 [s/s]	3.9358(15)e-13 [s/s]	3.9916(32)e-13 [s/s]	4.0297(23)e-13 [s/s]	--
DMTD HM3(NICT)-HM15(NICT)	1hour interval data: 13.344(1)e-13 s/s 1sec interval data DMTD2:13.33(1)e-13 s/s DMTD3:13.344(5)e-13 s/s DMTD4:13.344(7)e-13 s/s	13.15879(8)e-13 s/s	13.0840(9)e-13 s/s	12.9336(6)e-13 s/s	12.8805(8)e-13 s/s	12.7730(9)e-13 s/s
Sr-HM15,HM3(NICT)	8.3937(6)e-13 s/s	8.2092(6) e-13 s/s	8.1181(6) e-13 s/s	7.9501(6) e-13 s/s	7.880(7) e-13 s/s	7.7733(6) e-13 s/s	-4.9946(6) e-13 s/s	-5.0151(6) e-13 s/s	-5.0109(12) e-13 s/s	-5.0087(6) e-13 s/s
Fiber Link HM(INAF)-HM3(INRiM)	~~7.251(6)e-13 s/s~~ 7.2412(45)e-13 s/s	7.1311(3)e-13 s/s	7.050(6)e-13 s/s	10.369(3)e-13 s/s	10.264(3)e-13 s/s	10.173(8)e-13 s/s	10.1117(43)e-13 s/s	10.028(3)e-13 s/s	9.940(2)e-13 s/s	9.754(4)e-13 s/s
HM3(INRiM)-Yb	-9.2958(15)e-13 s/s	-9.2759(6)e-13 s/s	-9.254(1)e-13 s/s	-9.1348(12)e-13 s/s	-9.0923(21)e-13 s/s	-9.042(4)e-13 s/s	-9.025(1)e-13 s/s	-8.9935(10)e-13 s/s	-8.9643(14)e-13 s/s	-8.8754(13)e-13 s/s
Summary [(Sr/Yb) - 1]	~~-9.1(7) e-16 Err~~ -14.8 (8.5)e-16	0.9(5.8)e-16	8.1(8.6)e-16	VLBI-link:12.8(8)e-16, IPPP-link:4.5(5)e-16	VLBI-link:-22(18)e-16, IPPP-link:-14.3(8)e-16	VLBI-link:41(23)e-16, IPPP-link:3.4(9)e-16	VLBI-link:25(27)e-16, IPPP-link:28(5)e-16	VLBI-link:3(12)e-16, IPPP-link:11(4.5)e-16	VLBI-link:-21(12)e-16, IPPP-link:-5(3.6)e-16	VLBI-link:-24(13)e-16

Link Summary
[xlsx]

14 Oct - 24 Nov.	14 Oct - 04 Dec.	14 Oct - 15 Dec.	14 Oct - 25 Dec.
			In case using limiting period to 21Sep-22Nov for HM3-Sr Link,
		Nov24-Dec25	Dec04-Dec25

3 Individual Link

3.1 Yb-HM(INRiM)

Period	Plot	Polynomial
2018/270 10:17-341 17:58 2018/9/27-12/7		F(x)=-0.2885x - 900.3830 [fs/s]

3.2 HM(INAF)-HM(INRiM)

Period	Plot	Polynomial
2018/288-355 2018/10/15 - 12/21		F(x)=+0.8256x+1002.03 [fs/s]

3.3 HM(NICT HM3)-Sr

Period	Plot	Polynomial
2018/263-2019/009 (2018/9/21 - 2019/1/9) 2018/263-2018/361 (2018/9/21 - 2018/12/27) 2018/263-2018/326 (2018/9/21 - 2018/11/22)		F(x)=-3.6861e-6 X³ -5.1830e-4 X² -2.1911e-2 X + 500.7976 [fs/s] F(x)=-2.9125e-6 X³ -4.9183e-4 X² -2.2659e-2 X + 500.7907 [fs/s] F(x)= -2.2412e-4 X² -1.6286e-2 X + 500.8007 [fs/s]

3.4 HM3-HM15 Freq Link

Period	Plot	Polynomial
2018/285-2019/010 (2018/10/12 - 2019/1/10)		F(x)=-2.7955e-3 X² +0.96548 X + 1258.9883 (0.036) [fs/s]

3.5 VLBI: H-Maser(Medicina)-H-Maser#3 (NICT) in 14 Oct. - (Stations:Kashima34, MBL1, MBL2)

Exp.Date	Single Session	Comment	Multi Session	PolyFit	Misc
14-15 Feb.		Data:VLBI-Feb14/	Oct14-Feb14	Polynomial Fit Residual	Alan Std.
04-05 Feb.		Data:VLBI-Feb04/	Oct14-Feb04	Polynomial Fit Residual	Alan Std.
25-26 Jan.		Data:VLBI-Jan25/	Oct14-Jan25	Polynomial Fit Residual	Alan Std.
15 Jan.		Data:VLBI-Jan15/	Oct14-Jan15	Polynomial Fit Residual	Alan Std.
25 Dec.		Data:VLBI-Dec25/	Oct14-Dec25	Polynomial Fit Residual
15 Dec.		Data:VLBI-Dec15/	Oct14-Dec15	Polynomial Fit Residual
04 Dec.		Data:VLBI-Dec04/	Oct14-Dec04	Polynomial Fit Residual
24 Nov.		Data:VLBI-Nov24/	Oct14-Nov24	Polynomial Fit Residual HM(NICT)-Yb(Including VLBI-link), HM(NICT)-Sr
14 Nov.		Data:VLBI-Nov14/	Oct14-Nov14
04 Nov.		Data:VLBI-Nov04/	Oct.14-Nov.04
24 Oct.
14 Oct.		Data:VLBI-Oct14/

3.6 IPPP H-Maser(Medicina)-UTC(NICT)+ UTC(NICT)-HM3(NICT) by BPIM

4. (Pre Exp.) H-Maser(Medicina)-UTC(NICT) in 14 Aug. - 06 Oct.

Exp.Date	Single Band	WBWS	Comment
04 Oct.			Kashima34, MBL1, MBL2
31 Aug.			Ishioka13, MBL1, MBL2
21 Aug.			Ishioka13, MBL1, MBL2
14 Aug.			Ishioka13, MBL1, MBL2

NICT HMaser#3, #15 - Sr Monitor

All Span	Nov

INRIM HMaser - INRIM Yb Monitor

All Span	Nov5-6