Man page - asa_im_decode(1)
Packages contas this manual
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- asa_im_decode(1)
- resamp(1)
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- merge_swath(1)
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apt-get install gmtsar-core
Manual
| ASA_IM_DECODE(1) | User Commands | ASA_IM_DECODE(1) |
NAME
asa_im_decode - asa_im_decode
SYNOPSIS
asa_im_decode <asa_im> <asa_ins> <out> <outType> <near_range>
DESCRIPTION
This program is part of GMTSAR.
*** asa_im_decode v1.1 by smb ***
Decodes Envisat ASAR Image Mode Level 0 data.
- asa_im
- input image file(s) (multiple files if merging along-track)
- asa_ins
- input auxiliary instrument characterization data file
- out
- output raw data file
- outType
- output file type (1=byte,4=float)
- near_range
- near range to which to align all lines (0=use first line near range)
Notes:
out is a complex file with no headers (byte/float I1, byte/float Q1, byte/float I2, byte/float Q2, ...)
if outType is byte, then the decoded floats are multiplied by 127.5, shifted by 127.5, rounded to the nearest integer and limited to the range 0-255
starting range computed as (rank*pri+windowStartTime)*c/2 where rank is the number of pri between transmitted pulse and return echo
calibration/noise lines are replaced with previous echo data line
missing lines within a data set and between adjacent along-track data sets are filled with zeroes in float mode and 0.*127.5+127.5 + .5 = 128 for byte mode
auxiliary data files can be found at http://envisat.esa.int/services/auxiliary_data/asar/
Envisat ASAR Product Handbook, Issue 1.1, 1 December 2002 can be found at http://envisat.esa.int/dataproducts/asar/CNTR6-3-6.htm#eph.asar.asardf.0pASA_IM__0P
*** asa_im_decode v1.1 by smb ***
Decodes Envisat ASAR Image Mode Level 0 data.
Usage: asa_im_decode <asa_im> <asa_ins> <out> <outType> <near_range>
- asa_im
- input image file(s) (multiple files if merging along-track)
- asa_ins
- input auxiliary instrument characterization data file
- out
- output raw data file
- outType
- output file type (1=byte,4=float)
- near_range
- near range to which to align all lines (0=use first line near range)
Notes:
out is a complex file with no headers (byte/float I1, byte/float Q1, byte/float I2, byte/float Q2, ...)
if outType is byte, then the decoded floats are multiplied by 127.5, shifted by 127.5, rounded to the nearest integer and limited to the range 0-255
starting range computed as (rank*pri+windowStartTime)*c/2 where rank is the number of pri between transmitted pulse and return echo
calibration/noise lines are replaced with previous echo data line
missing lines within a data set and between adjacent along-track data sets are filled with zeroes in float mode and 0.*127.5+127.5 + .5 = 128 for byte mode
auxiliary data files can be found at http://envisat.esa.int/services/auxiliary_data/asar/
Envisat ASAR Product Handbook, Issue 1.1, 1 December 2002 can be found at http://envisat.esa.int/dataproducts/asar/CNTR6-3-6.htm#eph.asar.asardf.0pASA_IM__0P
| May 2024 | asa_im_decode |