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

Laboratory 1Instituto Nacional de Metrologia (INM)ID Number012End Date2021-04-24
Latitude 4° 38 min 34.643 s NCounter Delay 0.17 nsReference SourceSIMT(INM)
Longitude 74° 5 min 32.593 s WREF Delay 60.9 nsMask Angle10°
Altitude2611.11 mReceiver Delay128.2 nsReceiver Temp.29 °C
Laboratory 2INTN, Asuncion-ParaguayID Number018Baseline3704.715 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 -5495621.52 22924.43 +3.02 x 10-10 +1.00




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 142 6.94 x 10-11
0 h, 20 min 140 7.15 x 10-11
0 h, 40 min 136 6.93 x 10-11
1 h, 20 min 128 8.55 x 10-11
2 h, 40 min 112 6.71 x 10-11
5 h, 20 min 80 4.72 x 10-11


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 142 24.05
0 h, 20 min 139 41.28
0 h, 40 min 133 88.53
1 h, 20 min 121 209.63
2 h, 40 min 97 333.97
5 h, 20 min 49 314.65


SIMT(INM) - 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
1 240 190 5264.74 24.28 +3.50 x 10-10 +0.96 View
2 530 240 20577.16 15.26 +3.11 x 10-10 +1.00 View
3 560 410 7647.22 37.30 +3.19 x 10-10 +0.98 View
4 220 190 4532.94 53.94 +4.89 x 10-10 +0.99 View
5 350 110 23416.78 0.83 +2.76 x 10-10 +1.00 View
6 430 160 20786.63 15.77 +3.03 x 10-10 +1.00 View
7 330 210 2366.64 12.79 +2.04 x 10-10 +1.00 View
8 230 230 4882.09 38.53 +3.28 x 10-10 +0.96 View
9 390 320 6530.52 32.64 +2.08 x 10-10 +0.99 View
10 350 230 4530.12 20.25 +3.35 x 10-10 +1.00 View
11 --- --- ---------- ------- -------------- ------ ----
12 470 310 6735.16 25.62 +2.67 x 10-10 +1.00 View
13 310 260 23410.06 8.75 +2.81 x 10-10 +1.00 View
14 310 230 2046.69 0.81 +1.54 x 10-10 +1.00 View
15 350 230 23408.11 13.27 +2.78 x 10-10 +1.00 View
16 320 230 4340.33 18.62 +3.27 x 10-10 +1.00 View
17 390 140 23132.39 24.30 +2.87 x 10-10 +0.99 View
18 330 250 5030.70 29.26 +3.51 x 10-10 +1.00 View
19 320 60 23414.66 1.03 +2.75 x 10-10 +1.00 View
20 430 210 4167.92 31.60 +3.46 x 10-10 +1.00 View
21 280 220 5445.16 50.91 +4.40 x 10-10 +0.98 View
22 380 160 5755.76 70.72 +3.73 x 10-10 +1.00 View
23 380 230 4637.26 24.25 +3.66 x 10-10 +1.00 View
24 300 210 3238.25 14.02 +2.88 x 10-10 +0.99 View
25 450 320 7612.15 28.56 +3.31 x 10-10 +1.00 View
26 300 200 3850.30 20.87 +3.28 x 10-10 +1.00 View
27 280 230 3597.17 13.18 +2.68 x 10-10 +0.99 View
28 220 160 1567.93 0.52 +1.54 x 10-10 +1.00 View
29 370 210 8591.49 17.22 +3.21 x 10-10 +1.00 View
30 300 220 2602.91 12.29 +1.78 x 10-10 +1.00 View
31 430 90 9553.46 40.33 +3.19 x 10-10 +1.00 View
32 360 160 3056.24 16.01 +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.