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

Laboratory 1National Research CouncilID Number008End Date2021-04-24
Latitude 45° 27 min 14.853 s NCounter Delay 0.57 nsReference SourceSIMT(NRC)
Longitude 75° 37 min 25.777 s WREF Delay 38 nsMask Angle10°
Altitude82.59 mReceiver Delay229.3 nsReceiver Temp.33 °C
Laboratory 2INTN, Asuncion-ParaguayID Number018Baseline7513.011 km
Latitude 25° 15 min 13.417 s SCounter Delay 0.78 nsReference SourceSIMT(INTN)
Longitude 57° 35 min 4.426 s WREF Delay 2.5 nsMask Angle10°
Altitude104.49 mReceiver Delay20.6 nsReceiver Temp.37 °C

Hours in
Common-View		 Mean Time
Offset (ns)		 Range (ns) Frequency Offset Confidence (r)
24 -5495472.80 22895.00 +3.02 x 10-10 +1.00




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 139 7.45 x 10-11
0 h, 20 min 137 7.34 x 10-11
0 h, 40 min 133 7.11 x 10-11
1 h, 20 min 125 8.66 x 10-11
2 h, 40 min 109 6.69 x 10-11
5 h, 20 min 77 4.41 x 10-11


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 139 25.82
0 h, 20 min 136 42.39
0 h, 40 min 130 90.39
1 h, 20 min 118 211.95
2 h, 40 min 94 335.80
5 h, 20 min 46 274.51


SIMT(NRC) - SIMT(INTN)
(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
1 350 130 1461.37 6.07 +2.01 x 10-10 +1.00 View
2 380 100 976.38 6.25 +1.79 x 10-10 +1.00 View
3 420 100 7655.44 22.56 +3.05 x 10-10 +1.00 View
4 350 120 3240.46 57.22 +5.17 x 10-10 +0.98 View
5 320 70 23409.18 15.91 +2.79 x 10-10 +1.00 View
6 350 80 20755.55 1.11 +3.01 x 10-10 +1.00 View
7 320 90 899.63 4.22 +1.85 x 10-10 +1.00 View
8 300 140 3513.05 51.35 +4.59 x 10-10 +0.97 View
9 420 100 6558.33 70.55 +2.15 x 10-10 +0.98 View
10 350 130 2671.77 18.80 +3.69 x 10-10 +1.00 View
11 --- --- ---------- ------- -------------- ------ ----
12 430 90 6745.38 25.72 +2.70 x 10-10 +1.00 View
13 390 140 1446.46 8.47 +1.83 x 10-10 +1.00 View
14 340 130 1117.29 7.30 +1.54 x 10-10 +1.00 View
15 330 140 1812.59 10.98 +2.25 x 10-10 +0.99 View
16 340 130 2398.08 14.69 +3.37 x 10-10 +1.00 View
17 290 30 745.79 0.00 +1.55 x 10-10 +1.00 View
18 340 130 2249.36 35.54 +3.14 x 10-10 +1.00 View
19 350 90 23409.71 1.04 +2.75 x 10-10 +1.00 View
20 360 120 2091.32 36.45 +3.18 x 10-10 +0.99 View
21 330 70 2108.45 76.02 +2.87 x 10-10 +0.97 View
22 310 40 7358.62 0.00 +3.07 x 10-10 +1.00 View
23 260 130 2679.10 25.10 +3.77 x 10-10 +1.00 View
24 360 70 927.94 10.56 +2.50 x 10-10 +1.00 View
25 350 70 2414.15 22.31 +4.10 x 10-10 +1.00 View
26 330 130 2393.18 20.80 +3.22 x 10-10 +1.00 View
27 360 120 1608.61 25.53 +2.20 x 10-10 +0.99 View
28 180 40 924.75 0.00 +1.53 x 10-10 +1.00 View
29 420 70 8616.33 14.38 +3.33 x 10-10 +1.00 View
30 340 70 958.78 27.01 +2.26 x 10-10 +1.00 View
31 370 30 6882.20 0.00 +3.17 x 10-10 +1.00 View
32 360 90 1881.12 21.69 +3.16 x 10-10 +1.00 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.