ANSI-C program: DORIS_vec.c
NAME
DORIS_vec - extract state vectors from DORIS
precision orbit state vector files and copy to the ISP SLC/MLI
image parameter file
SYNOPSIS
DORIS_vec <SLC_par> <DOR>
[nstate]
| <SLC_par> | (input/output) ISP SLC/MLI image parameter file |
| <DOR> | (input) ASAR DORIS data file (DOR_VOR_AXVF) |
| [nstate] | number of state vectors to extract (default=5, ) |
EXAMPLE
DORIS_vec 22331.par
DOR_VOR_AXVF-P20040830_135600_20040720_215528_20040722_002328
DESCRIPTION
DORIS_vec reads state vectors produced from the DORIS instrument
data on Envisat. The state vectors are written into the ISP
SLC/MLI image parameter file along with the start time and time
interval between state vectors. The DORIS file consist of 129
byte text records containing the date, time, offset between UTC
and UT1, orbit, position, and velocity, and data quality
information. State vectors are given on 60 second intervals. The
default number of state vectors is 9 spaced at 60 second
intervals, up to 64 state vectors can be extracted. Format
of the DORIS data file records is described in an ESA
document available from http://envisat.esa.int/dataproducts/asar/CNTR2-9-3.htm.
Access to the DORIS data is via a request to the ESRIN Help
desk State vectors are used for calculation of
interferometric baselines and terrain geocoding of the SAR
data
SEE ALSO
typedef_ISP.h, SLC_par.
© Copyrights for Documentation, Users Guide and Reference Manual by Gamma Remote Sensing, 2004.
UW, CW, last change 15-Nov-2004