SIMT(INTI) versus SIMT(ICE) 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 2Instituto Costarricense de Electridad (ICE), Costa RicaID Number011Baseline5434.135 km
Latitude 9° 55 min 52.809 s NCounter Delay 0.28 nsReference SourceSIMT(ICE)
Longitude 84° 3 min 22.568 s WREF Delay 30.7 nsMask Angle10°
Altitude1247.76 mReceiver Delay238.2 nsReceiver Temp.27 °C

Hours in
Common-View		 Mean Time
Offset (ns)		 Range (ns) Frequency Offset Confidence (r)
24 -35.15 25.44 -2.58 x 10-13 -0.77




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 142 7.60 x 10-12
0 h, 20 min 140 4.16 x 10-12
0 h, 40 min 136 2.28 x 10-12
1 h, 20 min 128 9.79 x 10-13
2 h, 40 min 112 5.41 x 10-13
5 h, 20 min 80 3.34 x 10-13


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 142 2.63
0 h, 20 min 139 2.18
0 h, 40 min 133 1.94
1 h, 20 min 121 1.34
2 h, 40 min 97 1.80
5 h, 20 min 49 4.25


SIMT(INTI) - SIMT(ICE)
(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
1 340 170 21.28 2.23 -1.06 x 10-12 -0.60 View
2 360 160 44.27 1.99 -5.84 x 10-13 -0.97 View
3 380 210 27.49 1.46 -8.44 x 10-13 -0.89 View
4 380 160 31.20 8.85 -1.74 x 10-14 -0.01 View
5 380 110 21.67 1.58 +3.63 x 10-12 +0.94 View
6 310 100 15.95 1.60 +1.88 x 10-12 +0.91 View
7 330 180 33.32 4.25 -1.98 x 10-12 -0.72 View
8 330 200 15.28 2.14 -3.72 x 10-13 -0.30 View
9 360 120 29.77 1.42 -3.32 x 10-12 -0.98 View
10 330 170 23.45 1.46 +1.57 x 10-12 +0.70 View
11 --- --- ---------- ------- -------------- ------ ----
12 400 160 10.16 2.13 -1.55 x 10-13 -0.57 View
13 310 200 36.39 2.84 -2.83 x 10-13 -0.89 View
14 350 180 25.17 4.06 -8.09 x 10-13 -0.44 View
15 320 180 30.07 3.33 -2.19 x 10-13 -0.62 View
16 320 180 10.10 1.65 -1.78 x 10-13 -0.20 View
17 240 80 8.27 2.05 -4.28 x 10-14 -0.17 View
18 360 170 14.78 1.54 +2.05 x 10-13 +0.15 View
19 270 70 9.85 2.70 -6.60 x 10-14 -0.83 View
20 320 170 46.58 1.28 -6.63 x 10-13 -0.97 View
21 320 180 13.41 2.03 +4.00 x 10-13 +0.42 View
22 300 100 23.18 1.96 -2.34 x 10-12 -0.93 View
23 270 140 9.35 1.22 +6.14 x 10-13 +0.53 View
24 240 140 17.57 1.74 +9.26 x 10-14 +0.09 View
25 380 310 18.78 2.29 +1.23 x 10-14 +0.02 View
26 280 140 16.66 2.97 -1.07 x 10-12 -0.75 View
27 280 110 10.76 1.25 -1.80 x 10-13 -0.24 View
28 250 150 15.65 3.40 -2.78 x 10-13 -0.18 View
29 310 160 10.08 1.11 +1.11 x 10-13 +0.13 View
30 370 160 39.43 8.04 -2.31 x 10-12 -0.61 View
31 370 110 10.74 1.69 -1.31 x 10-12 -0.80 View
32 360 130 10.32 0.87 -1.23 x 10-12 -0.88 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.