SYNOPSIS

 use Geo::Format::Envisat;

 # base info solely on filename (fast!)
 my $mph  = envisat_mph_from_name $filename;

 # collect all meta-data from inside the file
 my $meta = envisat_meta_from_file $filename;

 use Data::Dumper;
 print Dumper $meta;   # see the returned structure

 # see examples/ directory!!

DESCRIPTION

Simply transform the meta-data which leads Envisat and ERS imagery into Perl HASHes for easy access. All keys which are upper-case follow the official document. Lower-cased fields are added for each of the official names, which are preprocessed to simplify further processing, like translation of time fields to OS time values and an iso representation. The lower-cased key names will also have blanks stripped from the end and abbreviated codes extended for readability.

The formats are described in various documents available from http://earth.esa.int/pub/ESA_DOC/ENVISAT/

Used are Vol05_Structures_3d_20071122.pdf (Main Product Header description version 2007-11-22) and Vol08_Asar_4B_20071025.pdf (ASAR file format specifics version 2007-10-25).