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Bernese GPS Software Version 5.0 - Bernese GNSS Software

Bernese GPS Software Version 5.0 - Bernese GNSS Software

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22.7 Orbit Related Files<br />

VERSION 2<br />

CODE RAPID 3-DAY SOLUTION, DAY 306, YEAR 2003 03-NOV-03 08:41<br />

------------------------------------------------------------------------------------------------<br />

NUTATION MODEL : IAU80 SUBDAILY POLE MODEL: IERS2000<br />

MJD X-P Y-P UT1UTC LOD S-X S-Y S-UT S-LD NR NF NT X-RT Y-RT ..<br />

E-6" E-6" E-7S E-7S/D E-6" E-6" E-7S E-7S/D E-6"/D ..<br />

52943.00 210899 225409 -3706590 -1087 33 34 1 12 123 0 24 -1606 -1893 ..<br />

52943.50 210096 224463 -3706047 -441 32 32 6 25 123 0 24 -1606 -1893 ..<br />

52944.00 209293 223516 -3705826 34 32 33 11 46 123 0 24 -2082 -1585 ..<br />

52944.50 208252 222724 -3705843 906 32 32 12 51 123 0 24 -2082 -1585 ..<br />

5294<strong>5.0</strong>0 207211 221932 -3706296 2011 32 33 15 66 123 0 24 -2269 -2095 ..<br />

Figure 22.23: Pole file (IEP) in IGS/IERS format.<br />

22.7.8 Earth Rotation Parameters or Pole Coordinates in <strong>Bernese</strong> Format<br />

Type: ASCII<br />

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

Extension: ERP<br />

Content: Pole coordinates, UT1-UTC, UTC-<strong>GPS</strong>, nutation offsets.<br />

Created by: Download from our anonymous account C04 yyyy.ERP in <strong>Bernese</strong> ERP format<br />

or download C04 pole, rapid pole, or IGS pole from different places (see<br />

Section 4.12) and use POLUPD (”Menu>Orbits/EOP>Handle EOP files>Convert IERS to<br />

<strong>Bernese</strong> format”) to transform to <strong>Bernese</strong> ERP format (currently 13 different<br />

pole file formats are supported). The pole file may also be created as a result<br />

of a parameter estimation using programs <strong>GPS</strong>EST (”Menu>Processing>Parameter<br />

estimation”) or ADDNEQ2 (”Menu>Processing>Normal equation stacking”).<br />

Used by: All orbit programs and all processing programs.<br />

Example: Figure 22.24 and ${X}/DOC/EXAMPLE.ERP.<br />

ERP files are input files for most of the programs but they may also be created as output files<br />

from parameter estimation using <strong>GPS</strong>EST or ADDNEQ2. In <strong>Version</strong> <strong>5.0</strong> Nutation models<br />

IAU80 and IAU2000 and subdaily Earth rotation model IERS2000 and RAY 96 are available.<br />

Always use the same pole file together with one and the same orbit file (standard orbit or<br />

tabular).<br />

The pole file is accessed by the subroutine ${LG}/GETPOL.f. It is not important that the<br />

pole positions are given at equidistant time intervals. ${LG}/GETPOL.f checks, however, for<br />

each request that the spacing between the two data points used for interpolation is smaller<br />

than 10 days. The table values are linearly interpolated and a warning is given if a leap<br />

second occurred in the interpolation interval.<br />

IERS C04 POLE 07-JAN-04 18:36<br />

------------------------------------------------------------------------------------------------<br />

NUTATION MODEL : IAU80 SUBDAILY POLE MODEL: IERS2000<br />

DATE TIME X-POLE Y-POLE UT1-UTC <strong>GPS</strong>-UTC RMS XP RMS YP RMS DT DE-CPO DP-C..<br />

YYYY MM DD HH MM (") (") (S) (S) REM (") (") (S) (") (")..<br />

..<br />

2004 1 1 0 0 0.03134 0.15381 -0.389583 13. C04 0.00000 0.00000 0.000000 0.00000 0.00..<br />

2004 1 2 0 0 0.02881 0.15364 -0.390051 13. C04 0.00000 0.00000 0.000000 0.00000 0.00..<br />

2004 1 3 0 0 0.02665 0.15381 -0.390382 13. C04 0.00000 0.00000 0.000000 0.00000 0.00..<br />

2004 1 4 0 0 0.02421 0.15425 -0.390536 13. C04 0.00000 0.00000 0.000000 0.00000 0.00..<br />

2004 1 5 0 0 0.02171 0.15487 -0.390534 13. C04 0.00000 0.00000 0.000000 0.00000 0.00..<br />

Figure 22.24: Pole file (ERP) in <strong>Bernese</strong> Format.<br />

<strong>Bernese</strong> <strong>GPS</strong> <strong>Software</strong> <strong>Version</strong> <strong>5.0</strong> Page 509

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