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Bernese GPS Software Version 5.0 - Bernese GNSS Software

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22. Data Structure<br />

EGM96<br />

EGM96, VERSION : November 1996<br />

AE GM<br />

6378136.3 3986004.415E+08<br />

REFERENCE DATE : 1986.00<br />

MAXIMAL DEGREE : 360<br />

L M DOT CBAR SBAR SIGMA C SIGMA S<br />

2 0DOT 1.1627553400E-11 0.000000000000E+00 0.00000000E+00 0.00000000E+00<br />

2 1DOT-0.3200000000E-11 1.620000000000E-11 0.00000000E+00 0.00000000E+00<br />

2 0 -0.484165371736E-03 0.000000000000E+00 0.35610635E-10 0.00000000E+00<br />

2 1 -0.186987635955E-09 0.119528012031E-08 0.10000000E-29 0.10000000E-29<br />

2 2 0.243914352398E-05 -0.140016683654E-05 0.53739154E-10 0.54353269E-10<br />

3 0 0.957254173792E-06 0.000000000000E+00 0.18094237E-10 0.00000000E+00<br />

3 1 0.202998882184E-05 0.248513158716E-06 0.13965165E-09 0.13645882E-09<br />

.....<br />

360 357 -0.628042366728E-11 0.106635915741E-09 0.50033977E-10 0.50033977E-10<br />

360 358 0.709604781531E-10 0.691761006753E-10 0.50033977E-10 0.50033977E-10<br />

360 359 0.183971631467E-10 -0.310123632209E-10 0.50033977E-10 0.50033977E-10<br />

360 360 -0.447516389678E-24 -0.830224945525E-10 0.50033977E-10 0.50033977E-10<br />

Figure 22.13: The geopotential file EGM96.<br />

The distribution of <strong>Version</strong> <strong>5.0</strong> includes the old models GEMT3 and GEM10N, the models<br />

JGM3 and EGM96 recommended by the IERS Conventions 2003 [McCarthy and Petit, 2004],<br />

and the new models EIGEN2 and TEG4. Geopotential model files are read by the subroutine<br />

${LG}/GETPOT.f with their respective format. For each model a flag indicating ‘tide-free’<br />

or ‘zero-tide’ is defined.<br />

22.4.12 Ocean Tides Model File<br />

Type: ASCII<br />

Directory: ${X}/GEN (UNIX) or %X%\GEN (Windows)<br />

Extension: TID<br />

Content: Ocean tides model coefficients.<br />

Created by: User-defined.<br />

Used by: ORBGEN (”Menu>Orbits/EOP>Create standard orbits”).<br />

Example: Figure 22.14.<br />

UTCSR OCEAN TIDE MODEL FROM SCHWIDERSKI AND INTERPOLATION/EXTRAPOLATION (PLUS TEG-2B)<br />

117 767 20 20<br />

0<br />

0.63781450000000E+07 0.10250000000000E+04 0.59742300000000E+25 0.43440000000000E+03-0.12300..<br />

0.00000000000000E+00-0.30750000000000E+00-0.19500000000000E+00-0.13200000000000E+00-0.10320..<br />

-0.81400000000000E-01-0.75500000000000E-01-0.71400000000000E-01-0.68200000000000E-01-0.65100..<br />

-0.60300000000000E-01-0.58400000000000E-01-0.56700000000000E-01-0.55300000000000E-01-0.54000..<br />

-0.51200000000000E-01-0.49700000000000E-01<br />

55.565LP 20 0.27930000000000E-01 0.14709399847621E-03 0.18000000000000E+03 0.299000..<br />

55.575LP A 9 -0.28000000000000E-03 0.29418799695241E-03 0.00000000000000E+00 0.299000..<br />

55.765LP B 1 0.40000000000000E-04 0.76600359860474E-03 0.18000000000000E+03 0.299000..<br />

56.544SA A 1 -0.40000000000000E-04 0.25906843923209E-02 0.00000000000000E+00 0.299000..<br />

56.554SA 11 -0.49200000000000E-02 0.27377783907971E-02 0.00000000000000E+00 0.299000..<br />

56.556SA B 2 0.26000000000000E-03 0.27380399907945E-02 0.18000000000000E+03 0.299000..<br />

56.564SA C 1 0.50000000000000E-04 0.28848723892733E-02 0.18000000000000E+03 0.299000..<br />

57.355SSAB 8 -0.32000000000000E-03 0.48569087814630E-02 0.00000000000000E+00 0.299000..<br />

57.553SSAD 1 -0.12000000000000E-03 0.54755567815941E-02 0.00000000000000E+00 0.299000..<br />

....<br />

Figure 22.14: Ocean tides file (TID).<br />

Page 494 AIUB

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