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

Laboratory 1Centro Nacional de Metrologia de Panama AIPID Number009End Date2021-04-25
Latitude 9° 0 min 3.590 s NCounter Delay -0.01 nsReference SourceSIMT(CNMP)
Longitude 79° 35 min 5.880 s WREF Delay 45.66 nsMask Angle10°
Altitude47.23 mReceiver Delay122.1 nsReceiver Temp.27 °C
Laboratory 2Observatorio NacionalID Number010Baseline5152.964 km
Latitude 22° 53 min 44.563 s SCounter Delay 0.13 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 -27.13 24.86 +1.24 x 10-13 +0.42




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 142 4.69 x 10-12
0 h, 20 min 140 2.93 x 10-12
0 h, 40 min 136 1.84 x 10-12
1 h, 20 min 128 1.05 x 10-12
2 h, 40 min 112 7.15 x 10-13
5 h, 20 min 80 3.88 x 10-13


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 142 1.63
0 h, 20 min 139 1.58
0 h, 40 min 133 1.76
1 h, 20 min 121 2.09
2 h, 40 min 97 3.09
5 h, 20 min 49 4.93


SIMT(CNMP) - 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
1 300 250 26.93 0.98 -1.18 x 10-12 -0.91 View
2 530 160 16.91 1.31 -1.80 x 10-12 -0.95 View
3 480 270 21.30 1.60 -7.56 x 10-13 -0.77 View
4 200 120 14.73 2.73 +5.46 x 10-13 +0.36 View
5 380 160 36.11 1.19 +2.31 x 10-13 +0.70 View
6 360 120 18.85 1.30 +1.41 x 10-13 +0.78 View
7 330 190 32.78 0.84 +2.47 x 10-12 +0.93 View
8 300 230 20.16 1.56 +1.04 x 10-12 +0.80 View
9 270 130 31.25 1.64 +1.40 x 10-12 +0.96 View
10 340 200 10.40 0.95 -7.08 x 10-13 -0.86 View
11 --- --- ---------- ------- -------------- ------ ----
12 400 180 36.42 1.86 -1.65 x 10-12 -0.94 View
13 330 270 40.77 1.88 +3.32 x 10-13 +0.90 View
14 380 220 37.31 1.01 +1.74 x 10-12 +0.88 View
15 350 210 17.23 1.89 -1.02 x 10-12 -0.81 View
16 340 200 10.59 1.81 -6.50 x 10-13 -0.71 View
17 420 100 8.74 1.93 +1.85 x 10-13 +0.12 View
18 330 210 22.04 2.17 -1.07 x 10-12 -0.79 View
19 250 60 11.16 0.45 +1.14 x 10-13 +0.94 View
20 340 200 13.69 1.71 -1.14 x 10-12 -0.90 View
21 330 170 10.06 1.94 -8.40 x 10-13 -0.87 View
22 190 60 9.82 3.33 +1.81 x 10-12 +0.57 View
23 370 220 21.52 1.13 -1.30 x 10-12 -0.88 View
24 360 200 18.42 1.44 -6.84 x 10-13 -0.59 View
25 310 180 33.87 1.25 -1.79 x 10-12 -0.93 View
26 310 150 14.22 2.04 -5.08 x 10-13 -0.61 View
27 330 270 14.32 1.53 +6.56 x 10-13 +0.77 View
28 260 190 24.91 1.26 +1.20 x 10-12 +0.71 View
29 300 170 13.44 1.84 +9.99 x 10-13 +0.76 View
30 240 140 38.88 1.56 +3.10 x 10-12 +0.97 View
31 430 140 18.82 2.36 -4.38 x 10-13 -0.86 View
32 520 170 17.39 1.86 +8.86 x 10-13 +0.78 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.