 |
 |
 |
|
ILRS Home  Stations Site Information Data Correction Stanford Counter Corrections
|
|
 |
|
 |
| Data Correction |
| Data Correction Free Format |
| System Configuration and CoM Corrections for LAGEOS |
| Corrections for Stanford Counters |
Stanford Counter Corrections
(as of 10-Jun-2008)
| ILRS Code |
Site Name |
Pad ID |
LEO Correction |
LAGEOS Correction |
GPS Correction |
Start Date |
End Date |
|---|---|---|---|---|---|---|---|
BEIL |
Beijing |
7249 |
-2 |
-2 |
- 3 |
01/20/2001 |
- |
BORL |
Borowiec |
7811 |
-9 |
-9 |
0 |
05/07/2002 |
- |
BREF |
Brest |
7604 |
0 |
0 |
- 1 |
07/01/2001 |
- |
GLSV |
Kiev |
1824 |
+ 4 |
+ 4 |
+ 3 |
11/10/1999 |
- |
HELW |
Helwan |
7831 |
+10 |
+10 |
+ 9 |
05/15/1999 |
- |
HERL |
Herstmonceux |
7840 |
+ 2 |
+ 2 |
+ 2 |
10/01/1994 |
01/31/2002 |
HERL |
Herstmonceux |
7840 |
-6 |
-6 |
- 6 |
01/02/2002 |
02/10/2007 |
KTZL |
Katzively |
1893 |
+10 |
+10 |
+ 9 |
06/20/1998 |
- |
KUNL |
Kunming |
7820 |
+ 1 |
+ 1 |
0 |
05/20/1998 |
- |
POT3 |
Potsdam |
7841 |
+ 5 |
+ 5 |
+ 5 |
07/20/2001 |
02/19/2004 |
POTL |
Potsdam |
7836 |
+ 3 |
+ 3 |
+ 3 |
05/08/1992 |
- |
SFEL |
San Fernando |
7824 |
+ 8 |
+ 8 |
+ 8 |
08/10/2001 |
- |
SISL |
Simosato |
7838 |
+11 |
+11 |
+10 |
07/01/2004 |
- |
SJUL |
San Juan |
7406 |
+10 |
+10 |
+ 9 |
01/20/2006 |
- |
WUHL |
Wuhan |
7231 |
+10 |
+10 |
+ 9 |
01/01/1999 |
- |
ZIML |
Zimmerwald |
7810 |
-3 |
-3 |
-3 |
01/01/1997 |
- |
GRSL |
Grasse |
7835 |
+ 9 |
+ 9 |
+ 8 |
09/01/1995 |
- |
The table above gives estimates of corrections in mm to be added to one-way range measurements from each station for the time period shown and as a function of satellite distance broadly given at LEO, LAGEOS and GPS heights. The stations and data given in bold refer to estimates of Stanford counter errors that have been determined using high-precision linear event timers at the Space Geodesy Facility, Herstmonceux. Results for the other stations have been estimated from the known characteristics of Stanford counters, along with knowledge of calibration-board distances and calibration values reported in the site logs and in the stations’ ILRS data. These results should be taken as estimates only of the probable range errors for each station; the complex error-functions of the counters impose 2-3mm periodic errors, the exact magnitudes of which vary according to individual installation details, including cable lengths, etc., that will not be re-created on the test bench. The counters from San Juan and Beijing will be tested at Herstmonceux during early summer 2008.
A PDF document of the correction table is also available. For further information contact Graham Appleby.
Responsible Government Official: Carey Noll
NASA's Privacy Policy and Important Notices
Send us your comments
