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

Laboratory 1INDOCAL Dominican RepublicID Number029End Date2021-09-13
Latitude 18° 27 min 57.917 s NCounter Delay 0.40 nsReference SourceSIMT(INDC)
Longitude 69° 53 min 44.116 s WREF Delay 0 nsMask Angle10°
Altitude1.44 mReceiver Delay11.3 nsReceiver Temp.28 °C
Laboratory 2Observatorio NacionalID Number010Baseline5254.796 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 -37.50 221.73 -4.85 x 10-13 -0.22




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 142 1.20 x 10-11
0 h, 20 min 140 1.22 x 10-11
0 h, 40 min 136 1.13 x 10-11
1 h, 20 min 128 1.15 x 10-11
2 h, 40 min 112 1.05 x 10-11
5 h, 20 min 80 4.88 x 10-12


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 142 4.16
0 h, 20 min 139 7.14
0 h, 40 min 133 13.37
1 h, 20 min 121 28.00
2 h, 40 min 97 52.06
5 h, 20 min 49 47.50


SIMT(INDC) - 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
1 320 220 68.42 1.41 +5.25 x 10-12 +0.84 View
2 480 140 221.04 3.18 -2.90 x 10-11 -0.96 View
3 430 160 39.17 1.53 -4.55 x 10-12 -0.95 View
4 280 130 19.59 1.15 +2.60 x 10-12 +0.86 View
5 410 170 236.60 2.92 -7.41 x 10-12 -0.82 View
6 450 200 119.55 3.15 +3.91 x 10-12 +0.80 View
7 310 170 76.26 1.58 -9.14 x 10-12 -0.98 View
8 290 150 21.52 1.66 -2.72 x 10-12 -0.94 View
9 390 230 140.12 3.06 +1.92 x 10-12 +0.44 View
10 370 200 91.85 2.21 -9.23 x 10-14 -0.13 View
11 --- --- ---------- ------- -------------- ------ ----
12 420 130 126.01 7.26 -2.34 x 10-12 -0.54 View
13 290 190 194.76 3.42 -1.52 x 10-11 -0.80 View
14 330 210 129.39 1.84 +9.91 x 10-12 +0.91 View
15 380 190 228.22 3.31 -2.10 x 10-11 -0.91 View
16 330 130 55.04 2.49 +8.51 x 10-12 +0.93 View
17 380 170 128.06 10.72 +4.73 x 10-12 +0.34 View
18 330 200 119.23 2.13 +8.06 x 10-12 +0.81 View
19 370 110 115.04 14.65 -9.76 x 10-12 -0.51 View
20 410 180 302.72 10.30 -1.17 x 10-11 -0.89 View
21 280 180 60.94 1.15 +6.50 x 10-12 +0.92 View
22 470 210 51.38 2.28 -8.86 x 10-14 -0.04 View
23 340 200 120.22 2.08 -2.67 x 10-13 -0.11 View
24 320 210 102.34 2.06 +4.83 x 10-12 +0.57 View
25 380 180 67.71 1.81 -1.92 x 10-12 -0.30 View
26 390 210 90.99 2.38 -5.59 x 10-13 -0.75 View
27 310 170 35.77 1.72 -1.93 x 10-12 -0.67 View
28 --- --- ---------- ------- -------------- ------ ----
29 310 200 111.77 2.35 -1.04 x 10-12 -0.88 View
30 200 90 20.58 1.63 -9.79 x 10-13 -0.51 View
31 470 190 55.71 1.69 +3.58 x 10-13 +0.54 View
32 480 200 85.99 2.21 -7.69 x 10-13 -0.76 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.