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Bernese GPS Software Version 5.0 - Bernese GNSS Software

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POLE OFFSET COEFFICIENTS IERS EOP SERIES -- IERS REFERENCE FRAMES 17-MAR-94<br />

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

REFERENCE TIME (YYYY MM DD HH.H): 1988 00 00 00.0<br />

X RMSX Y RMSY UT1 RMSU DPSI RMS DEPSI RMS<br />

MAS MAS MAS MAS 0.1MS 0.1MS MAS MAS MAS MAS<br />

** ***** **** ***** **** ***** **** ***** **** ***** ****<br />

A -0.10 0.40 0.70 0.40 -0.60 0.20 -0.20 0.01 0.30 0.01<br />

A’ 0.08 0.04 0.15 0.04 0.04 0.03 0.00 0.00 0.00 0.00<br />

REF: 1992 IERS ANNUAL REPORT, Table II-3.<br />

22.4 General Files<br />

Figure 22.12: Pole offset file in <strong>Bernese</strong> format. The values are valid for the transformation<br />

of the C04 pole to the ITRF94 realization of the terrestrial reference frame.<br />

22.4.10 Pole Offsets for the C04 and Rapid Pole Series<br />

Type: ASCII<br />

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

Extension: -<br />

Content: Pole Offsets for the C04 combined pole series (the C04 pole series is based on<br />

a reference system different from the ITRF realizations).<br />

Created by: User-defined. Transformation parameters obtained from the IERS annual reports<br />

(usually Table II-3).<br />

Used by: POLUPD (”Menu>Orbits/EOP>Handle EOP files>Convert IERS to <strong>Bernese</strong> format”).<br />

Example: Figure 22.12.<br />

This file contains the pole offset information that is used to transform C04-pole and Rapidpole<br />

information to the actual epoch. Until the revision of the generation of C04-pole and<br />

Rapid-pole information by the IERS in 1997 this file had to be update every year to introduce<br />

the new ”constants” given in the annual report of the IERS. Today the pole offsets are no<br />

longer required because the IERS pole series are kept consistent with the ITRF in nearrealtime<br />

based on measurements provided by the space geodetic techniques.<br />

You do not need this file at all if you use IGS pole information or the C04- or the Rapid-pole<br />

from the anonymous ftp account of AIUB (http://www.aiub.unibe.ch/download/) (see<br />

Section 4.12).<br />

22.4.11 Geopotential Coefficients<br />

Type: ASCII<br />

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

Extension: -<br />

Content: Earth potential coefficients.<br />

Created by: User-defined.<br />

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

Example: Figure 22.13 and ${X}/GEN/EGM96..<br />

<strong>Bernese</strong> <strong>GPS</strong> <strong>Software</strong> <strong>Version</strong> <strong>5.0</strong> Page 493

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