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

Laboratory 1Instituto Costarricense de Electridad (ICE), Costa RicaID Number011End Date2021-04-24
Latitude 9° 55 min 52.809 s NCounter Delay 0.25 nsReference SourceSIMT(ICE)
Longitude 84° 3 min 22.568 s WREF Delay 30.7 nsMask Angle10°
Altitude1247.76 mReceiver Delay238.2 nsReceiver Temp.26 °C
Laboratory 2INTN, Asuncion-ParaguayID Number018Baseline4721.256 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 -5495526.00 22925.47 +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 7.17 x 10-11
0 h, 40 min 136 6.95 x 10-11
1 h, 20 min 128 8.59 x 10-11
2 h, 40 min 112 6.72 x 10-11
5 h, 20 min 80 4.71 x 10-11


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 142 24.03
0 h, 20 min 139 41.41
0 h, 40 min 133 88.84
1 h, 20 min 121 210.52
2 h, 40 min 97 334.09
5 h, 20 min 49 313.02


SIMT(ICE) - 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
1 280 210 4470.82 29.97 +3.03 x 10-10 +0.96 View
2 480 230 20577.23 10.68 +3.12 x 10-10 +1.00 View
3 410 270 7654.37 45.44 +3.16 x 10-10 +1.00 View
4 310 190 4705.41 55.47 +4.78 x 10-10 +0.99 View
5 320 150 23412.14 1.96 +2.77 x 10-10 +1.00 View
6 370 160 1788.57 15.01 +2.04 x 10-10 +1.00 View
7 330 190 2224.24 14.09 +2.11 x 10-10 +1.00 View
8 320 240 5065.77 37.57 +3.22 x 10-10 +0.96 View
9 280 180 3477.03 44.15 +3.01 x 10-10 +0.96 View
10 420 210 4167.57 19.48 +3.40 x 10-10 +1.00 View
11 --- --- ---------- ------- -------------- ------ ----
12 300 190 6745.70 12.64 +2.76 x 10-10 +1.00 View
13 310 250 23404.44 9.49 +2.81 x 10-10 +1.00 View
14 360 200 1804.43 1.66 +1.58 x 10-10 +1.00 View
15 340 220 23406.35 9.33 +2.76 x 10-10 +1.00 View
16 330 220 4072.17 18.22 +3.24 x 10-10 +1.00 View
17 440 160 5476.27 7.05 +1.85 x 10-10 +1.00 View
18 300 200 4361.93 33.35 +3.46 x 10-10 +1.00 View
19 420 100 22915.52 1.39 +2.80 x 10-10 +1.00 View
20 470 180 3423.42 32.70 +3.35 x 10-10 +1.00 View
21 430 190 5307.76 59.03 +4.33 x 10-10 +0.99 View
22 220 100 1726.26 14.05 +2.08 x 10-10 +1.00 View
23 450 200 4173.37 22.63 +3.76 x 10-10 +1.00 View
24 350 130 2877.72 20.75 +2.99 x 10-10 +1.00 View
25 450 350 6923.67 25.82 +3.29 x 10-10 +1.00 View
26 310 220 4322.39 20.54 +3.32 x 10-10 +1.00 View
27 230 160 3689.47 22.57 +2.67 x 10-10 +1.00 View
28 300 160 1599.26 3.58 +1.57 x 10-10 +1.00 View
29 250 170 2799.64 14.77 +2.90 x 10-10 +1.00 View
30 250 190 2102.53 13.15 +1.96 x 10-10 +1.00 View
31 360 90 1665.10 28.16 +3.42 x 10-10 +1.00 View
32 370 140 2840.00 16.76 +3.25 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.