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 Date2021-04-23
Latitude 0° 8 min 9.394 s SCounter Delay 2.59 nsReference SourceSIMT(CMEE)
Longitude 78° 28 min 31.972 s WREF Delay 0 nsMask Angle10°
Altitude2905.04 mReceiver Delay58.7 nsReceiver Temp.27 °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)
24 116.74 14.92 +7.94 x 10-14 +0.50




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 141 6.35 x 10-12
0 h, 20 min 139 3.31 x 10-12
0 h, 40 min 135 1.75 x 10-12
1 h, 20 min 127 1.17 x 10-12
2 h, 40 min 111 7.50 x 10-13
5 h, 20 min 79 3.41 x 10-13


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 141 2.20
0 h, 20 min 138 1.69
0 h, 40 min 132 1.50
1 h, 20 min 120 2.11
2 h, 40 min 96 3.00
5 h, 20 min 48 3.10


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
1 320 280 20.06 2.22 +5.11 x 10-13 +0.53 View
2 550 200 30.88 2.24 +3.37 x 10-13 +0.93 View
3 520 370 14.40 2.31 -2.20 x 10-14 -0.04 View
4 260 150 19.83 2.10 -9.52 x 10-13 -0.54 View
5 290 110 9.26 3.52 +1.64 x 10-13 +0.11 View
6 270 110 19.84 1.98 +2.22 x 10-12 +0.90 View
7 270 180 14.31 1.84 -1.10 x 10-12 -0.75 View
8 250 160 28.36 2.63 +1.25 x 10-12 +0.76 View
9 370 240 23.39 2.40 -4.43 x 10-13 -0.53 View
10 310 190 31.36 1.83 -2.28 x 10-12 -0.87 View
11 --- --- ---------- ------- -------------- ------ ----
12 560 400 17.17 3.25 -2.49 x 10-13 -0.44 View
13 350 260 17.00 2.15 +2.94 x 10-15 +0.03 View
14 300 210 31.88 2.94 -1.62 x 10-12 -0.78 View
15 340 200 17.81 2.70 -1.23 x 10-13 -0.70 View
16 310 180 19.96 1.76 +8.03 x 10-13 +0.48 View
17 490 100 28.34 2.87 +1.96 x 10-13 +0.55 View
18 330 220 22.06 2.49 -9.37 x 10-13 -0.65 View
19 400 130 9.82 2.66 -1.52 x 10-14 -0.22 View
20 470 190 16.56 4.10 +5.42 x 10-14 +0.25 View
21 360 210 12.12 1.84 +6.70 x 10-13 +0.66 View
22 380 210 14.70 1.78 +6.85 x 10-14 +0.12 View
23 400 180 29.75 1.65 -2.27 x 10-12 -0.85 View
24 320 230 15.30 1.50 +5.89 x 10-13 +0.67 View
25 320 220 28.56 3.03 +1.08 x 10-12 +0.82 View
26 280 170 20.16 3.05 +1.03 x 10-12 +0.71 View
27 250 190 11.81 1.50 +3.42 x 10-13 +0.58 View
28 170 140 23.62 3.16 -1.76 x 10-12 -0.85 View
29 340 230 20.10 3.69 -8.63 x 10-13 -0.68 View
30 290 230 27.03 2.13 -1.82 x 10-12 -0.89 View
31 340 140 21.69 4.06 -4.83 x 10-13 -0.76 View
32 400 170 14.72 1.18 -2.69 x 10-13 -0.73 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.