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Commit 21bd5b38 authored by Carlos H. Brandt's avatar Carlos H. Brandt
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Update mex/hrsc docs

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# Mars Express HRSC DTM imagery
# High Resolution Stereo Camera
[Scholten et al, 2005]: Scholten_etal_2005-HRSC_Data_Processing.pdf
[Neukem et al, 2004]: Neukem_etal-HRSC.pdf
HSRC data are available at different processing levels.
As explained in [Scholten et al., 2005] (hereafter S05):
* Ortho and DTM data: https://pds.nasa.gov/ds-view/pds/viewDataset.jsp?dsid=MEX-M-HRSC-5-REFDR-DTM-V1.0
* PDS node: https://pds-geosciences.wustl.edu/missions/mars_express/hrsc.htm
* HRSC user guide: https://ode.rsl.wustl.edu/mars/pagehelp/quickstartguide/index.html?hrsc.htm
HSRC data are available at different processing levels.
As explained in [Scholten et al, 2005] (hereafter S05) and overviewed in [Neukem et al, 2004]:
* Level-1: conversion of original data stream (transmitted to ground) to de-compressed data;
* Level-2: radiometric correction of the image data;
* Level-3: map projection of all data;
* Level-4: DTMs and orthoimages.
[Level-4 data products are available] at:
We are interested in Level-4 data: DTM/DEM. In particular, data taken from
instrument's Nadir setup; Figure [S05 Fig-1] pictures the different lines fo
sight according to the different CCDs (Nadir represented as `ND`):
![HRSC/SRC technical parameters][S05 Fig-1]
[S05 Fig-1]: Scholten_etal_2005-Fig1_Technical_Params_HRSC_SRC.png
## Data access
The following links have further information about this dataset:
* Ortho and DTM data: https://pds.nasa.gov/ds-view/pds/viewDataset.jsp?dsid=MEX-M-HRSC-5-REFDR-DTM-V1.0
* HRSC user guide: https://ode.rsl.wustl.edu/mars/pagehelp/quickstartguide/index.html?hrsc.htm
* PDS node: https://pds-geosciences.wustl.edu/missions/mars_express/hrsc.htm
* ODE: https://ode.rsl.wustl.edu/mars/indexDatasets.aspx
* ESA Planetary Science Archive (PSA)
* http://www.rssd.esa.int/index.php?project=PSA
* HRSCview - joint site by FU Berlin/DLR
* http://hrscview.fu-berlin.de/
* NASA Planetary Data Science (PDS)
* http://pds-geosciences.wustl.edu/missions/mars_express/
[Level-4 data products are available]: https://sci.esa.int/web/mars-express/-/42328-hrsc-high-level-data-products-available
### Keywords
## ESA
The attached document [hrsc_label.pdf] describes in details what we is the
metadata set for HRSC (REFDR/DTM) data products.
In the table below, the keyword/values particularly of our interest to select
the data we look forward to handle.
ESA provides a search interface at https://archives.esac.esa.int/psa/
and a FTP at ftp://psa.esac.esa.int/pub/mirror/MARS-EXPRESS/HRSC/ .
keyword | value | meaning
--- | --- | ---
`SPACECRAFT_POINTING_MODE` | `NADIR` | spacecraft pointing mode
![HRSC/SRC technical parameters][S05 Fig-1]
## Extra info
[Scholten et al., 2005]: Scholten_etal_2005-HRCS_Data_Processing.pdf
[S05 Fig-1]: Scholten_etal_2005-Fig1_Technical_Params_HRSC_SRC.png
The following link is of a thread in USGS/ISIS forum about HRSC Nadir/DEM
misaligned data. It is a discussion between Matt and Trent on handling data in
ArcMap + GDAL:
* https://isis.astrogeology.usgs.gov/IsisSupport/index.php?topic=2726.0
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