SIMT(INTI) versus SIMT(IBM) 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 Date2021-09-13
Latitude 34° 34 min 35.819 s SCounter Delay -0.05 nsReference SourceSIMT(INTI)
Longitude 58° 30 min 56.613 s WREF Delay 5 nsMask Angle10°
Altitude43.59 mReceiver Delay124.6 nsReceiver Temp.29 °C
Laboratory 2IBMETRO Bolivia ID Number025Baseline2209.983 km
Latitude 16° 30 min 1.070 s SCounter Delay 0.01 nsReference SourceSIMT(IBM)
Longitude 68° 7 min 56.998 s WREF Delay 2.9 nsMask Angle10°
Altitude3648.75 mReceiver Delay103.0 nsReceiver Temp.41 °C

Hours in
Common-View		 Mean Time
Offset (ns)		 Range (ns) Frequency Offset Confidence (r)
24 -113.07 19.40 +1.72 x 10-13 +0.73




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 142 5.36 x 10-12
0 h, 20 min 140 3.28 x 10-12
0 h, 40 min 136 1.88 x 10-12
1 h, 20 min 128 9.81 x 10-13
2 h, 40 min 112 4.76 x 10-13
5 h, 20 min 80 2.90 x 10-13


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 142 1.86
0 h, 20 min 139 1.78
0 h, 40 min 133 1.65
1 h, 20 min 121 1.61
2 h, 40 min 97 1.69
5 h, 20 min 49 3.22


SIMT(INTI) - SIMT(IBM)
(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
1 310 280 21.48 1.64 +3.17 x 10-14 +0.03 View
2 350 190 19.49 2.50 +1.14 x 10-13 +0.27 View
3 330 220 20.60 2.38 +7.61 x 10-13 +0.84 View
4 360 250 41.02 3.65 +1.67 x 10-12 +0.81 View
5 390 240 39.67 3.82 +2.04 x 10-13 +0.40 View
6 330 180 19.69 2.21 +2.64 x 10-13 +0.69 View
7 360 300 28.71 2.25 +1.48 x 10-12 +0.92 View
8 350 280 34.75 3.11 +3.73 x 10-13 +0.26 View
9 350 290 25.33 2.74 +1.40 x 10-12 +0.93 View
10 320 250 18.63 1.98 +1.03 x 10-13 +0.65 View
11 --- --- ---------- ------- -------------- ------ ----
12 340 230 22.52 3.13 +5.11 x 10-13 +0.54 View
13 300 260 20.96 1.60 -2.93 x 10-13 -0.24 View
14 330 260 19.12 3.18 +8.04 x 10-13 +0.62 View
15 380 240 49.20 2.38 +1.31 x 10-13 +0.06 View
16 410 220 38.74 2.74 +3.13 x 10-13 +0.95 View
17 370 140 42.43 7.08 +5.66 x 10-13 +0.74 View
18 350 290 35.64 4.47 +1.54 x 10-14 +0.05 View
19 250 120 14.97 2.73 +1.37 x 10-12 +0.77 View
20 350 200 27.40 2.29 -1.85 x 10-14 -0.02 View
21 330 310 23.00 1.90 +2.24 x 10-13 +0.24 View
22 310 80 10.19 3.12 +7.60 x 10-13 +0.73 View
23 280 220 15.37 1.42 +8.10 x 10-14 +0.74 View
24 360 280 18.50 2.00 -2.51 x 10-13 -0.28 View
25 370 330 19.15 1.40 -2.56 x 10-13 -0.29 View
26 310 230 28.11 5.13 +1.80 x 10-13 +0.74 View
27 300 260 25.93 1.92 +2.13 x 10-13 +0.77 View
28 --- --- ---------- ------- -------------- ------ ----
29 370 320 52.38 2.18 +7.77 x 10-13 +0.41 View
30 360 230 29.40 4.17 +1.18 x 10-12 +0.75 View
31 380 210 17.17 2.99 +3.80 x 10-14 +0.22 View
32 380 230 39.39 3.60 +5.52 x 10-15 +0.01 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.