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

Laboratory 1CMEE EcuadorID Number024End Date2021-04-24
Latitude 0° 8 min 9.394 s SCounter Delay 0.38 nsReference SourceSIMT(CMEE)
Longitude 78° 28 min 31.972 s WREF Delay 0 nsMask Angle10°
Altitude2905.04 mReceiver Delay58.7 nsReceiver Temp.28 °C
Laboratory 2Instituto Nacional de Tecnologia Industrial, Buenos Aires, Argentina ID Number014Baseline4259.114 km
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

Hours in
Common-View		 Mean Time
Offset (ns)		 Range (ns) Frequency Offset Confidence (r)
24 125.73 23.60 +1.60 x 10-13 +0.74




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 141 7.27 x 10-12
0 h, 20 min 139 3.48 x 10-12
0 h, 40 min 135 2.49 x 10-12
1 h, 20 min 127 1.57 x 10-12
2 h, 40 min 111 7.00 x 10-13
5 h, 20 min 79 3.50 x 10-13


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 141 2.52
0 h, 20 min 138 1.88
0 h, 40 min 132 2.42
1 h, 20 min 120 2.80
2 h, 40 min 96 2.78
5 h, 20 min 48 2.65


SIMT(CMEE) - SIMT(INTI)
(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
1 330 280 21.23 2.26 +9.85 x 10-13 +0.82 View
2 530 180 41.95 3.38 +5.54 x 10-13 +0.97 View
3 530 380 14.67 2.15 -2.42 x 10-14 -0.04 View
4 260 150 15.29 2.95 +1.38 x 10-13 +0.08 View
5 280 110 6.80 2.71 +2.58 x 10-13 +0.28 View
6 270 110 18.51 2.87 +2.85 x 10-12 +0.92 View
7 280 180 19.56 2.27 -1.16 x 10-12 -0.63 View
8 250 150 23.98 2.13 +1.45 x 10-12 +0.89 View
9 400 260 28.91 1.97 -1.17 x 10-12 -0.90 View
10 310 200 23.14 2.03 -1.40 x 10-12 -0.81 View
11 --- --- ---------- ------- -------------- ------ ----
12 560 400 20.88 2.71 -3.00 x 10-13 -0.42 View
13 330 230 23.48 2.66 +1.09 x 10-13 +0.71 View
14 310 210 24.41 2.40 -1.39 x 10-12 -0.90 View
15 330 200 25.22 4.69 +6.08 x 10-14 +0.25 View
16 320 190 31.05 1.62 +9.84 x 10-13 +0.36 View
17 480 110 34.29 4.71 +2.88 x 10-13 +0.67 View
18 330 230 24.24 2.27 -1.29 x 10-12 -0.77 View
19 400 140 17.18 3.42 +7.72 x 10-14 +0.63 View
20 460 160 25.45 2.20 +2.50 x 10-13 +0.80 View
21 340 220 15.35 2.49 +7.68 x 10-13 +0.79 View
22 390 210 12.26 2.85 -1.18 x 10-13 -0.21 View
23 400 170 28.30 2.43 -1.66 x 10-12 -0.74 View
24 310 220 25.34 3.02 +1.01 x 10-12 +0.74 View
25 330 220 20.97 2.96 +9.27 x 10-13 +0.79 View
26 300 200 21.74 1.94 +1.41 x 10-12 +0.82 View
27 240 170 12.93 1.57 +3.13 x 10-13 +0.39 View
28 180 140 19.67 2.78 -1.35 x 10-12 -0.65 View
29 320 230 20.52 2.61 -1.04 x 10-12 -0.75 View
30 300 220 26.49 2.83 -1.86 x 10-12 -0.90 View
31 320 140 18.46 3.19 -2.61 x 10-13 -0.57 View
32 410 180 16.99 2.07 -2.66 x 10-13 -0.64 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.