Information Technology Reference
In-Depth Information
those results which are generated from the same set of IN_parameters and IN_data
through the execution of the following
gdp01_ex {-i -g -b -p} 50714093.lv1
creating the following file
50714093.lv1c
This is a test file Level 1B certified by ESA and the resultant Level 1C product
validated by ESA. The method is based either on a comparison between the two
files obtained by applying the same parameters and on a absolute SysAdmin/Earth
Observation Scientist/expert evaluation based on a personal criteria (inspection by
using an appropriate viewer looking at values that the expert knows correctly).
Parameterised and automatic test were performed using the following main test:
Extract the complete Level 1 Data product in one output file and test the two
files by the diff function:
gdp01_ex 50714093.lv1 new_50714093
The md5sum algorithm certified that the 2 files have same computed and checked
MD5 msg-digest; the diff function states zero differences.
Other subtest procedures were performed and the results compared:
Get the ground pixel geolocation information of the Level 1 Data product:
gdp01_ex -g 50714093.lv1
Extract only channel 2B of a Level 1 data product:
gdp01_ex -b nnnynn 50714093.lv1 myres
Extract the geolocation and PMD data from the 10th to 12th data packets:
gdp01_ex -b nnnnnn -p 10 10 50714093.lv1 myres
Extract ground pixels between pixel number 500 and 510:
gdp01_ex -p 500 510 50714093.lv1 myres
20.5.2.7 All the Performed Tests Returned the Same Results
Conclusions
The two update test performed on the GOME data ingested into CASPAR have been
very simple but they are representative of more complex scenarios (e.g. changes in
compilers, hardware, etc.). In both cases the System Administrator is able to collect
together all that is needed to recompile, update, link, and notify users of the changes.
The ability to test the new processor on several operative systems accessible directly
through CASPAR and emulated by open source emulators is a significant plus.
By browsing the RepInfo the System Administrator is able to collect the source
code, the compilers, the software environment, the emulators and all the related
instructions in order to perform the critical steps needed to maintain the ability to
process data.
