SIMT(INTI) versus SIMT(CNM) via Common-View GPS
1 Day Averages 1 Hour Averages 10 Minute Averages Next Date Last Date Flip    

Laboratory 1Instituto Nacional de Tecnologia Industrial, Buenos Aires, Argentina ID Number014End Date2021-04-23
Latitude 34° 34 min 35.819 s SCounter Delay -0.04 nsReference SourceSIMT(INTI)
Longitude 58° 30 min 56.613 s WREF Delay 5 nsMask Angle10°
Altitude43.59 mReceiver Delay124.6 nsReceiver Temp.25 °C
Laboratory 2Centro Nacional de MetrologiaID Number007Baseline7098.025 km
Latitude 20° 32 min 13.284 s NCounter Delay 2.11 nsReference SourceSIMT(CNM)
Longitude100° 15 min 16.831 s WREF Delay 8.6 nsMask Angle10°
Altitude1928.65 mReceiver Delay140.3 nsReceiver Temp.32° C

Hours in
Common-View		 Mean Time
Offset (ns)		 Range (ns) Frequency Offset Confidence (r)
24 -115.62 23.80 -1.67 x 10-13 -0.67




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 140 8.05 x 10-12
0 h, 20 min 138 4.96 x 10-12
0 h, 40 min 134 2.83 x 10-12
1 h, 20 min 126 1.63 x 10-12
2 h, 40 min 110 8.28 x 10-13
5 h, 20 min 78 3.77 x 10-13


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 140 2.79
0 h, 20 min 137 2.69
0 h, 40 min 131 2.58
1 h, 20 min 119 2.75
2 h, 40 min 95 2.50
5 h, 20 min 47 3.70


SIMT(INTI) - SIMT(CNM)
(common-view tracks from individual GPS satellites)
GPS
PRN		 Minutes
(In-View)		 Minutes
(Common-View)		 Range (ns) Time
Deviation		 Frequency Offset Confidence (r) View
Detail
1 340 110 15.40 1.86 -1.63 x 10-12 -0.59 View
2 360 40 5.16 0.09 +2.82 x 10-12 +1.00 View
3 380 80 3.64 1.25 -6.15 x 10-13 -0.64 View
4 380 110 21.25 2.07 +2.89 x 10-12 +0.75 View
5 380 80 4.01 1.28 -6.15 x 10-13 -0.67 View
6 310 90 9.18 1.55 -1.17 x 10-12 -0.78 View
7 330 130 15.04 0.77 +1.90 x 10-12 +0.82 View
8 330 170 31.04 1.78 -2.85 x 10-12 -0.83 View
9 360 80 4.95 0.54 +6.26 x 10-13 +0.45 View
10 330 110 30.69 0.97 +4.12 x 10-12 +0.81 View
11 --- --- ---------- ------- -------------- ------ ----
12 400 100 12.71 1.52 +2.70 x 10-12 +0.96 View
13 310 160 26.09 2.52 -2.32 x 10-13 -0.66 View
14 350 140 17.46 4.91 +1.98 x 10-13 +0.10 View
15 320 150 14.71 2.68 -1.20 x 10-12 -0.65 View
16 320 130 14.27 1.72 -1.22 x 10-12 -0.67 View
17 240 60 10.16 1.67 +1.32 x 10-13 +0.48 View
18 360 140 27.31 1.64 +3.47 x 10-12 +0.92 View
19 270 60 12.91 1.09 +1.31 x 10-14 +0.10 View
20 320 100 33.17 0.93 -3.40 x 10-13 -0.77 View
21 320 130 14.09 3.19 -7.11 x 10-13 -0.71 View
22 300 120 11.94 2.97 -7.90 x 10-13 -0.53 View
23 270 90 14.05 3.85 +1.41 x 10-12 +0.47 View
24 240 100 11.22 1.50 -4.83 x 10-13 -0.28 View
25 380 160 23.10 3.47 +1.16 x 10-13 +0.20 View
26 280 70 28.99 5.00 -3.19 x 10-12 -0.93 View
27 280 140 18.48 1.38 -2.47 x 10-12 -0.94 View
28 250 100 16.29 1.33 +1.82 x 10-12 +0.63 View
29 310 70 15.24 0.35 +2.02 x 10-12 +0.96 View
30 370 140 19.20 2.99 +9.91 x 10-13 +0.47 View
31 370 120 21.55 1.84 -2.78 x 10-12 -0.95 View
32 360 70 24.49 2.96 +7.81 x 10-13 +0.91 View


Legend
GPS PRNThe unique pseudo random noise (PRN) code (1 to 32) used to identify each satellite. If no satellite is assigned to a given PRN code, then no data are shown.
Minutes
(In-View)		The number of minutes when the satellite was visible at laboratory 1. During this period, the time difference between the satellite clock and the laboratory reference is measured every second, and 10 minute averages are stored. Since data is recorded in 10 minute segments, the values are even multiples of 10 minutes.
Minutes
(Common-View)		The number of minutes when the satellite was visible at both sites involved in the common-view comparison.
RangeThe difference between the maximum and minimum time offset values (nanoseconds).
Time
Deviation		The time deviation (TDEV) of the 10-minute averages (nanoseconds).
Frequency
Offset		The estimated frequency offset of laboratory 1 relative to laboratory 2 based on a common-view observation of the satellite. This estimate is obtained by fitting a least squares line to all of the recorded data.
Confidence
Level (r)		The confidence level of the estimated frequency offset. The confidence level is the correlation coefficient (r) of the least squares line fitted to the data.
View
Track		Clicking on the View link displays a common-view track from the selected satellite. The number of previous days shown equals the number of previous days shown on this page, up to a maximum of 30 days.