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Bernese GPS Software Version 5.0 - Bernese GNSS Software

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TABULAR EPHEMERIS DERIVED FROM PREC. EPH: PR2004. 6 SYSTEM J2000.0<br />

CELESTIAL POLE OFFSET: IAU80 SUBDAILY POLE MODEL: IERS2000<br />

1 6 2004 0.000000000000D+00 0.000000000000D+00 0.000000000000D+00<br />

1 6 2004 0.230000000000D+02 0.450000000000D+02 0.209540641867D-06<br />

0.900000000000D+03 96<br />

-0.390592916107D+00 0.187917856810D-01 0.155273619621D+00<br />

38<br />

SVN 1<br />

... ..<br />

SVN 124<br />

22.7 Orbit Related Files<br />

1 -0.133523047097537D+05 0.671876755934849D+04 0.221249776236694D+05<br />

2 -0.251715229898754D+05 -0.329767345053296D+04 0.886157743828107D+04<br />

3 -0.199030234194768D+05 -0.140239394493945D+05 -0.104360944553931D+05<br />

4 0.248063838069284D+04 0.201877116851523D+05 0.172729998678100D+05<br />

....<br />

22.7.3 Tabular Orbits<br />

Type: ASCII<br />

Figure 22.20: Tabular orbit information (TAB file).<br />

Directory: Campaign-specific directory ORB.<br />

Extension: TAB<br />

Content: Tabular satellite positions in the inertial frame B1950.0 or J2000.0.<br />

Created by: PRETAB (”Menu>Orbits/EOP>Create tabular orbits”), BRDTAB (”Menu>Orbits/EOP<br />

>Broadcast orbits>Create tabular orbits”).<br />

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

Example: Figure 22.20.<br />

The orbit source is specified in the title line from column 44 to 53 (PR2004 in Figure 22.20).<br />

This information is transferred to the standard orbit file by program ORBGEN. The following<br />

line contains information about the subdaily pole and nutation model used. The next two<br />

lines contain start/end time. They are followed by the tabular interval and the (nominal)<br />

number of ephemeris points. The next line contains pole information (which is not used by<br />

the program system). In the following lines the number of satellites and the satellite numbers<br />

(PRN-numbers) are defined. Finally the satellite positions (in system B1950.0 or J2000.0)<br />

are given in km. Satellite and epoch belonging to a specific record are reconstructed from<br />

the record number which is the first item of each record. Records of satellites for which no<br />

positions exist for a certain time interval are not contained in the file to save space.<br />

22.7.4 Standard Orbits<br />

Type: Binary<br />

Directory: Campaign-specific directory ORB.<br />

Extension: STD<br />

Content: Standard orbit (<strong>Bernese</strong> orbit representation using sets of polynomials).<br />

<strong>Bernese</strong> <strong>GPS</strong> <strong>Software</strong> <strong>Version</strong> <strong>5.0</strong> Page 505

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