Program: ETRS89
GENERAL DESCRIPTION
This program may be used to perform the (time-dependent) transformation from ITRF coordinates into a realization ETRFyy of the European Terrestrial Reference System 89 (ETRS89) for a specified epoch (19yy or 20yy), or vice versa.
Caution: Be sure not to introduce a resulting ETRF coordinate file into any processing program. Bernese processing programs always expect coordinates in a realization of the ITRS.
GENERAL FILES
Show all general files:
Check this box to get a list of the general input files used by this program
as well as the currently active campaign, session, and session table.
INPUT FILE
Input coordinates: Specify the name of the input file containing the coordinates to be converted.
Example: ${DOC}/EXAMPLE.CRD
RESULT FILE
Output coordinates: Specify the name of the output file containing the converted coordinates.
Caution: Be sure not to introduce a resulting ETRF coordinate file into any processing program. Bernese processing programs always expect coordinates in a realization of the ITRS.
Note:
Potential GNSS system flags in the input coordinate file are ignored and
not transferred into the resulting coordinate file.
GENERAL OUTPUT FILES
Program output:
You can choose to have the program output written to a separate file for each
program run (checkbox marked), or specify a common name for all program runs.
If you mark the checkbox, the filename will correspond to the program name
with an extension containing a counter (Lnn), which is automatically
incremented for each program run. If the counter reaches the maximum value, it
is automatically reset, and existing files will be overwritten.
The maximum value can be set in
Menu > Configure > Program Names, option "Maximum program output
file number".
If the checkbox is unmarked, you have to specify a name for the program
output file. This allows to characterize the program run, e.g., by using the
day and year ($YD+0) in the filename.
Error messages: You can choose to have error messages written into the program's output file (see above), or specify a separate file to which error messages are written.
GENERAL INPUT FILES
General constants: This file contains all the physical and astronomical constants used in the Bernese GNSS Software. Most probably you will never have to modify this file.
Example: ${DOC}/EXAMPLE_CONST.BSW
Geodetic datum: This file contains the definition of the geodetic datum and of the ellipsoid to be used to compute ellipsoidal coordinates. It is used to apply antenna heights and for the printing of coordinates in the local system (north, east, up). You only have to modify this file when you want to introduce a new reference ellipsoid.
Caution: This file has no effect on Cartesian coordinates.
Example: ${DOC}/EXAMPLE_DATUM.BSW
ETRS89 2: Options
TITLE
This title line will be printed as header comment into the program output
to document the program run. The title should characterize the program run by,
e.g., giving the most important options used and the session.
TARGET FRAME:
Select the target frame to which the coordinates should be transferred.
Since this program can be used to convert coordinates from ITRF to ETRF as well
as from ETRF to ITRF according to the datum string in the input coordinate
file only the year of the target frame is displayed.
The frames published in
Boucher et al. (2011) are supported.
Use MANUAL to set own transformation parameters.
Default value: TRF2000
Specify the geodetic datum string that shall appear in the header of the output file.
TRANSLATION AND ROTATION PARAMETERS
Translation/Rotation: Specify the translation and rotation parameters and rates for the transformation from ITRFyy to ETRFxx. The values may be taken from the following example table:
| ITRF | ETRF | Epoch | Tx | Ty | Tz | D | Rx | Ry | Rz |
|---|---|---|---|---|---|---|---|---|---|
| mm | ppb | mas | |||||||
| 2014 | 2000 | 2010.0 | 54.7 | 52.2 | -74.1 | 2.12 | 1.701 | 10.290 | -16.632 |
| 0.1 | 0.1 | -1.9 | 0.11 | 0.081 | 0.490 | -0.792 | |||
| 2014 | 2014 | 2010.0 | 0.0 | 0.0 | 0.0 | 0.00 | 1.785 | 11.151 | -16.170 |
| 0.0 | 0.0 | 0.0 | 0.00 | 0.085 | 0.531 | -0.770 | |||
| 2014 | 2014 | 1989.0 | 0.0 | 0.0 | 0.0 | 0.00 | 0.000 | 0.000 | 0.000 |
| 0.0 | 0.0 | 0.0 | 0.00 | 0.085 | 0.531 | -0.770 | |||
Inverse transformation: If the corresponding checkbox is marked, the inverse transformation is computed. Accordingly, ITRFyy should be specified as LOCAL GEODETIC DATUM.
Default value: unmarked