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 Date2021-09-14
Latitude 34° 34 min 35.819 s SCounter Delay 0.08 nsReference SourceSIMT(INTI)
Longitude 58° 30 min 56.613 s WREF Delay 5 nsMask Angle10°
Altitude43.59 mReceiver Delay124.6 nsReceiver Temp.27 °C
Laboratory 2Observatorio NacionalID Number010Baseline1964.336 km
Latitude 22° 53 min 44.563 s SCounter Delay 0.09 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 -196.47 8.18 +2.16 x 10-14 +0.26




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 142 2.97 x 10-12
0 h, 20 min 140 1.77 x 10-12
0 h, 40 min 136 1.01 x 10-12
1 h, 20 min 128 6.15 x 10-13
2 h, 40 min 112 3.91 x 10-13
5 h, 20 min 80 2.32 x 10-13


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 142 1.03
0 h, 20 min 139 0.92
0 h, 40 min 133 0.87
1 h, 20 min 121 1.17
2 h, 40 min 97 1.77
5 h, 20 min 49 1.84


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
1 320 260 13.53 2.10 -1.79 x 10-13 -0.26 View
2 350 260 15.36 2.60 +9.20 x 10-14 +0.13 View
3 330 270 10.68 1.23 -3.74 x 10-13 -0.79 View
4 380 360 10.86 2.13 -6.62 x 10-15 -0.02 View
5 400 300 15.72 1.57 -2.83 x 10-13 -0.84 View
6 350 240 12.80 2.09 -1.17 x 10-13 -0.44 View
7 360 360 13.82 1.68 +3.54 x 10-13 +0.67 View
8 350 290 18.03 2.26 +2.22 x 10-14 +0.06 View
9 360 360 6.43 1.15 +5.44 x 10-14 +0.21 View
10 320 320 17.80 2.39 +2.65 x 10-14 +0.26 View
11 --- --- ---------- ------- -------------- ------ ----
12 350 270 8.54 1.19 +1.79 x 10-13 +0.41 View
13 310 250 17.61 2.01 -6.95 x 10-13 -0.69 View
14 330 330 16.14 1.67 -2.12 x 10-13 -0.29 View
15 350 290 22.85 3.89 -9.79 x 10-14 -0.31 View
16 400 310 24.42 2.86 +1.16 x 10-13 +0.65 View
17 360 250 11.10 2.09 -5.33 x 10-13 -0.78 View
18 360 360 14.64 1.33 +5.82 x 10-14 +0.55 View
19 240 240 8.06 1.19 -9.95 x 10-15 -0.02 View
20 340 310 21.87 2.43 -6.03 x 10-14 -0.24 View
21 330 260 14.90 0.94 -6.53 x 10-13 -0.75 View
22 290 250 11.75 1.41 -4.11 x 10-13 -0.79 View
23 290 290 11.14 1.08 +6.81 x 10-15 +0.11 View
24 350 230 11.69 1.55 -3.50 x 10-13 -0.58 View
25 370 300 5.50 0.87 +1.29 x 10-13 +0.51 View
26 300 250 14.18 1.69 +8.41 x 10-14 +0.68 View
27 270 200 11.35 2.12 +7.37 x 10-15 +0.01 View
28 --- --- ---------- ------- -------------- ------ ----
29 380 320 18.58 1.67 +3.04 x 10-13 +0.35 View
30 360 190 11.57 2.01 +2.62 x 10-13 +0.51 View
31 370 250 19.67 2.45 +2.00 x 10-13 +0.85 View
32 380 280 9.36 1.52 +1.01 x 10-13 +0.20 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.