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

Laboratory 1INACAL PeruID Number019End Date2021-04-24
Latitude 12° 5 min 7.520 s SCounter Delay 0.30 nsReference SourceSIMT(INCP)
Longitude 77° 0 min 26.262 s WREF Delay 7.7 nsMask Angle10°
Altitude198.84 mReceiver Delay100.9 nsReceiver Temp.30 °C
Laboratory 2Instituto Nacional de Tecnologia Industrial, Buenos Aires, Argentina ID Number014Baseline3084.281 km
Latitude 34° 34 min 35.819 s SCounter Delay 0.04 nsReference SourceSIMT(INTI)
Longitude 58° 30 min 56.613 s WREF Delay 5 nsMask Angle10°
Altitude43.59 mReceiver Delay124.6 nsReceiver Temp.25 °C

Hours in
Common-View		 Mean Time
Offset (ns)		 Range (ns) Frequency Offset Confidence (r)
24 279.64 15.21 +9.39 x 10-14 +0.53




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 142 3.91 x 10-12
0 h, 20 min 140 2.56 x 10-12
0 h, 40 min 136 1.70 x 10-12
1 h, 20 min 128 9.03 x 10-13
2 h, 40 min 112 5.71 x 10-13
5 h, 20 min 80 3.53 x 10-13


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 142 1.36
0 h, 20 min 139 1.39
0 h, 40 min 133 1.63
1 h, 20 min 121 1.61
2 h, 40 min 97 2.25
5 h, 20 min 49 3.55


SIMT(INCP) - SIMT(INTI)
(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
1 350 310 40.59 1.95 +1.56 x 10-12 +0.87 View
2 460 270 23.53 2.97 +1.20 x 10-13 +0.49 View
3 430 380 12.22 1.12 +2.09 x 10-13 +0.63 View
4 350 270 37.90 1.97 -1.88 x 10-12 -0.88 View
5 260 140 11.11 1.24 +8.45 x 10-13 +0.68 View
6 290 150 20.53 0.82 +2.46 x 10-13 +0.77 View
7 330 240 39.25 1.17 -2.74 x 10-12 -0.94 View
8 310 240 41.32 1.65 +2.87 x 10-12 +0.92 View
9 400 350 30.99 1.09 -1.32 x 10-12 -0.81 View
10 300 230 27.84 1.19 -1.83 x 10-12 -0.87 View
11 --- --- ---------- ------- -------------- ------ ----
12 500 410 16.76 1.23 -2.19 x 10-13 -0.41 View
13 330 260 21.49 2.40 -6.80 x 10-14 -0.52 View
14 280 210 31.71 1.59 -2.13 x 10-12 -0.92 View
15 340 250 40.64 3.98 -1.87 x 10-13 -0.72 View
16 250 160 22.43 1.70 +4.27 x 10-13 +0.16 View
17 420 150 19.36 2.70 +1.85 x 10-13 +0.83 View
18 270 230 31.26 1.47 -1.80 x 10-12 -0.88 View
19 320 200 16.55 1.51 +3.20 x 10-14 +0.26 View
20 450 160 21.99 0.90 -7.44 x 10-14 -0.18 View
21 160 160 37.09 1.44 +2.79 x 10-12 +0.97 View
22 370 240 15.12 0.86 +1.96 x 10-13 +0.24 View
23 280 200 32.51 1.53 -2.50 x 10-12 -0.89 View
24 360 280 30.02 1.44 +1.71 x 10-13 +0.34 View
25 390 340 15.70 1.38 +4.68 x 10-13 +0.68 View
26 320 210 30.31 2.67 +1.85 x 10-12 +0.83 View
27 290 210 42.89 1.28 +2.74 x 10-12 +0.98 View
28 190 130 20.57 1.56 -1.50 x 10-12 -0.61 View
29 310 280 27.57 0.96 -1.70 x 10-12 -0.95 View
30 290 220 36.69 1.35 -2.62 x 10-12 -0.97 View
31 400 250 23.41 2.16 +2.86 x 10-13 +0.66 View
32 400 220 13.78 0.83 +2.20 x 10-13 +0.65 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.