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 Date2021-04-25
Latitude 0° 8 min 9.394 s SCounter Delay 0.35 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 -0.02 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)
24 129.79 17.32 +2.52 x 10-14 +0.14




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 142 6.82 x 10-12
0 h, 20 min 140 3.31 x 10-12
0 h, 40 min 136 2.00 x 10-12
1 h, 20 min 128 1.21 x 10-12
2 h, 40 min 112 8.50 x 10-13
5 h, 20 min 80 4.88 x 10-13


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 142 2.36
0 h, 20 min 139 1.74
0 h, 40 min 133 1.90
1 h, 20 min 121 2.18
2 h, 40 min 97 3.88
5 h, 20 min 49 5.10


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
1 240 200 15.80 2.34 +5.12 x 10-13 +0.64 View
2 540 180 26.29 1.20 +2.33 x 10-13 +0.85 View
3 530 390 31.04 3.09 +7.19 x 10-13 +0.79 View
4 270 160 17.09 3.08 +3.03 x 10-13 +0.21 View
5 280 110 10.55 4.49 +1.01 x 10-12 +0.56 View
6 280 120 15.16 2.59 +1.27 x 10-12 +0.75 View
7 280 180 14.28 2.39 -9.06 x 10-13 -0.77 View
8 260 160 19.52 2.49 +4.95 x 10-13 +0.38 View
9 410 280 20.64 3.27 -3.01 x 10-14 -0.04 View
10 300 190 27.23 3.19 -2.05 x 10-12 -0.84 View
11 --- --- ---------- ------- -------------- ------ ----
12 560 400 21.61 2.79 -4.79 x 10-13 -0.60 View
13 340 190 15.74 2.11 -1.96 x 10-14 -0.15 View
14 300 210 19.22 2.33 -1.18 x 10-12 -0.77 View
15 340 210 17.82 2.67 -9.68 x 10-14 -0.60 View
16 310 170 21.07 2.44 +1.48 x 10-12 +0.67 View
17 460 150 29.43 3.05 +1.03 x 10-13 +0.32 View
18 330 220 19.17 2.46 -8.74 x 10-13 -0.62 View
19 410 140 18.86 1.73 +5.99 x 10-14 +0.55 View
20 460 170 24.59 2.20 +2.13 x 10-13 +0.81 View
21 450 300 20.54 1.82 +6.58 x 10-13 +0.65 View
22 380 210 7.56 1.77 +2.80 x 10-13 +0.69 View
23 390 180 29.40 2.29 -1.79 x 10-12 -0.74 View
24 330 250 25.93 2.77 +1.17 x 10-12 +0.81 View
25 320 220 21.01 2.91 +1.20 x 10-12 +0.88 View
26 290 210 21.98 3.85 +1.42 x 10-12 +0.80 View
27 250 210 16.88 2.55 -2.32 x 10-13 -0.29 View
28 190 150 20.38 1.95 -1.68 x 10-12 -0.75 View
29 330 230 22.66 2.52 -1.59 x 10-12 -0.92 View
30 290 220 25.47 2.45 -1.81 x 10-12 -0.88 View
31 330 140 24.71 1.61 -5.96 x 10-13 -0.82 View
32 410 170 28.93 1.89 -8.02 x 10-13 -0.97 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.