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 Date2021-09-12
Latitude 34° 34 min 35.819 s SCounter Delay 0.18 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 0.17 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 -207.81 7.03 -7.82 x 10-15 -0.12




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 142 3.20 x 10-12
0 h, 20 min 140 1.87 x 10-12
0 h, 40 min 136 1.04 x 10-12
1 h, 20 min 128 6.39 x 10-13
2 h, 40 min 112 3.72 x 10-13
5 h, 20 min 80 1.51 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 0.96
0 h, 40 min 133 0.92
1 h, 20 min 121 1.09
2 h, 40 min 97 1.35
5 h, 20 min 49 1.12


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 12.42 1.46 -3.11 x 10-13 -0.46 View
2 360 260 22.06 1.88 -1.94 x 10-13 -0.21 View
3 320 260 16.87 0.76 -9.26 x 10-13 -0.92 View
4 380 360 18.39 1.75 -3.01 x 10-13 -0.49 View
5 400 310 21.76 3.36 -1.40 x 10-13 -0.45 View
6 340 240 11.72 2.42 +9.15 x 10-14 +0.40 View
7 360 360 11.57 1.72 -1.09 x 10-13 -0.21 View
8 350 300 16.29 2.10 -1.72 x 10-13 -0.54 View
9 380 370 12.61 1.20 -1.43 x 10-13 -0.36 View
10 320 320 14.83 2.31 -2.65 x 10-14 -0.22 View
11 --- --- ---------- ------- -------------- ------ ----
12 340 270 11.14 1.68 -2.31 x 10-13 -0.48 View
13 300 240 15.08 2.14 +2.03 x 10-13 +0.25 View
14 330 330 25.51 2.94 -1.60 x 10-13 -0.21 View
15 350 290 19.46 2.80 -2.25 x 10-14 -0.10 View
16 410 320 22.55 3.31 +6.03 x 10-14 +0.38 View
17 360 250 17.60 2.16 +9.42 x 10-14 +0.11 View
18 360 360 15.83 1.58 +1.47 x 10-14 +0.14 View
19 240 240 11.54 1.40 +2.12 x 10-13 +0.27 View
20 350 310 12.79 2.07 -5.61 x 10-16 0.00 View
21 340 260 10.77 1.09 -1.91 x 10-13 -0.33 View
22 300 250 16.00 1.35 -4.15 x 10-13 -0.60 View
23 280 280 11.22 1.30 -3.37 x 10-14 -0.47 View
24 350 230 16.14 2.01 -4.73 x 10-13 -0.58 View
25 370 310 8.73 0.90 -3.81 x 10-13 -0.77 View
26 300 250 15.40 2.38 +6.57 x 10-14 +0.56 View
27 290 210 18.48 3.04 -5.03 x 10-13 -0.46 View
28 --- --- ---------- ------- -------------- ------ ----
29 390 320 14.95 1.69 -1.77 x 10-13 -0.23 View
30 370 210 18.21 2.58 +2.07 x 10-13 +0.33 View
31 370 250 19.39 2.25 +1.38 x 10-13 +0.72 View
32 380 280 13.38 1.47 +1.57 x 10-13 +0.28 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.