User manual to Sima
Leonid Petrov
Abstract:
This document describes using Sima -- program for computation of prediction
of the measurements of the Earth orientation parameters using simulated VLBI
observations.
Table of contents:
- 1 Overview
- 2 Usage
- 3 Format of Sima configuration file
-
- 3.1 Descriptions of directives of Sima configuration file
-
-
- 3.2 Example of Sima configuration file
-
- 4 History
1 Overview
Sima is a tool which facilitate obtaining prediction of measurements of
the EOP by VLBI. It assumes that the superfile with simulated VLBI experiment
has been already created. It runs solve with using template control file,
parses spool file, formats results and write them in the output file.
2 Usage
sima -i <Solve_initials> [-c <control file>] -s <superfile_name>
-i -- Solve user initials
-c -- specifies configuration file for Sima. Default is
$MK4_ROOT/local/{Center_label}.sim
-s -- superfile name. Sima digests two forms: without leading dollar
sign and with leading dollar sign. Dollar sign should be masked by
\ in the latter case. NB: the latest version is considered. Sima
doesn't provide the way to analyze not the latest version of the
superfile
3 Format of Sima configuration file
Configuration file contains records of three type:
1) comments: any line which beginning from ##
2) directives for Sima: the line which starts from # and which is
not a comment line.
Directive consists of three or more words separated by one or more
blanks.
Word1 -- symbol # -- directive attribute
Word2 -- keyword
Word3,4... value(s) of the keyword
Configuration file should contain definition of all keywords and all variables
listed in the next subsection.
3.1 Descriptions of directives of Sima configuration file
BATCH_CONTROL_FILE: Template batch Solve control file for running simulated
solution. This control file should have a record
@arc_line@ in the $ARC section. The actual superfile
will replace this record.
TEMP_CONTROL_FILE: Name of the temporary file where the actual batch control
file will be written.
SIMA_OUTPUT_FILE: Name of the output file which will contains summary of
results of solve run.
3.2 Example of Sima configuration file
#############################################################################
## ##
## Configuration file for program Sima at GSFC. ##
## ##
## 02-AUG-2000 12:06:14 ##
## ##
#############################################################################
# BATCH_CONTROL_FILE: /box1/control/sima_06.cnt
# TEMP_CONTROL_FILE: /tmp/sima.cnt
# SIMA_OUTPUT_FILE: /tmp/sima.out
#!
4 History
2000.08.02 L. Petrov Beginning of development.
2000.08.04 L. Petrov Release of 0.2 version
2000.09.19 L. Petrov Release of 0.5 version. Added check of solve status.
2000.10.31 L. Petrov Release of 1.0 version. Changed syntax of template
file. Release of this document.
Questions and comments about this document should be sent to:
Leonid Petrov ( pet@leo.gsfc.nasa.gov )
Last update: 2000.10.31