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

Laboratory 1Instituto Nacional de Tecnologia Industrial, Buenos Aires, Argentina ID Number014End Date2021-09-13
Latitude 34° 34 min 35.819 s SCounter Delay -0.05 nsReference SourceSIMT(INTI)
Longitude 58° 30 min 56.613 s WREF Delay 5 nsMask Angle10°
Altitude43.59 mReceiver Delay124.6 nsReceiver Temp.29 °C
Laboratory 2Observatorio NacionalID Number010Baseline1964.336 km
Latitude 22° 53 min 44.563 s SCounter Delay 0.07 nsReference SourceSIMT(ONRJ)
Longitude 43° 13 min 27.407 s WREF Delay 54.2 nsMask Angle10°
Altitude35.82 mReceiver Delay146.7 nsReceiver Temp.28 °C

Hours in
Common-View		 Mean Time
Offset (ns)		 Range (ns) Frequency Offset Confidence (r)
24 -202.82 12.33 +1.01 x 10-13 +0.82




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 142 3.21 x 10-12
0 h, 20 min 140 1.91 x 10-12
0 h, 40 min 136 1.27 x 10-12
1 h, 20 min 128 6.37 x 10-13
2 h, 40 min 112 3.33 x 10-13
5 h, 20 min 80 1.47 x 10-13


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 142 1.11
0 h, 20 min 139 1.00
0 h, 40 min 133 1.19
1 h, 20 min 121 0.95
2 h, 40 min 97 1.26
5 h, 20 min 49 0.66


SIMT(INTI) - SIMT(ONRJ)
(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
1 310 260 12.47 1.61 -1.74 x 10-13 -0.25 View
2 350 260 11.14 1.83 +1.09 x 10-14 +0.02 View
3 330 260 10.11 1.58 -2.73 x 10-13 -0.56 View
4 360 350 14.54 1.57 +1.99 x 10-13 +0.34 View
5 390 310 15.30 2.75 -2.29 x 10-13 -0.69 View
6 330 230 13.64 1.57 +9.57 x 10-14 +0.33 View
7 360 360 12.14 2.08 -7.17 x 10-14 -0.14 View
8 350 300 28.78 3.33 -3.16 x 10-14 -0.07 View
9 350 340 14.36 1.57 +1.87 x 10-13 +0.32 View
10 320 320 25.47 2.95 +1.08 x 10-13 +0.71 View
11 --- --- ---------- ------- -------------- ------ ----
12 340 260 10.84 1.04 -3.85 x 10-13 -0.66 View
13 300 250 14.13 1.54 -1.82 x 10-13 -0.24 View
14 330 330 17.76 1.39 -4.46 x 10-13 -0.66 View
15 380 320 41.94 1.77 +1.26 x 10-13 +0.38 View
16 410 330 30.31 2.61 +2.26 x 10-13 +0.83 View
17 370 250 11.02 2.01 -1.13 x 10-13 -0.21 View
18 350 350 18.75 1.40 +1.39 x 10-13 +0.87 View
19 250 250 18.01 2.00 +7.28 x 10-13 +0.72 View
20 350 290 15.69 2.05 +1.83 x 10-14 +0.08 View
21 330 260 13.90 1.62 -3.58 x 10-13 -0.51 View
22 310 260 7.32 1.18 -1.03 x 10-13 -0.28 View
23 280 280 16.81 1.56 +7.10 x 10-14 +0.67 View
24 360 230 11.43 1.96 -1.46 x 10-13 -0.26 View
25 370 310 14.68 0.96 -6.29 x 10-13 -0.81 View
26 310 260 25.56 2.95 +1.36 x 10-13 +0.74 View
27 300 210 9.50 2.26 +3.34 x 10-14 +0.04 View
28 --- --- ---------- ------- -------------- ------ ----
29 370 310 11.51 1.35 -1.83 x 10-13 -0.37 View
30 360 210 14.27 1.42 +8.78 x 10-14 +0.16 View
31 380 260 26.00 1.31 +2.20 x 10-13 +0.81 View
32 380 280 18.55 1.65 +5.06 x 10-13 +0.66 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.