From 27d3be194e62f815a5fadb100f7fc59b675780f7 Mon Sep 17 00:00:00 2001
From: Elena.Budnik <ebudnik@irap.omp.eu>
Date: Fri, 23 Sep 2016 15:26:26 +0200
Subject: [PATCH] marsis
---
Instrument/AMDA/MEX/MARSIS.xml | 27 ++++++++++++++++++++++-----
NumericalData/AMDA/MEX/MARSIS/mex-marsis-ele.xml | 44 ++++++++++++++++++++++++++++++++++++++------
Person/C.Grima | 10 ++++++++++
Person/Giovanni.Picardi | 9 +++++++++
Person/W.Kofman | 11 +++++++++++
5 files changed, 90 insertions(+), 11 deletions(-)
create mode 100644 Person/C.Grima
create mode 100644 Person/Giovanni.Picardi
create mode 100644 Person/W.Kofman
diff --git a/Instrument/AMDA/MEX/MARSIS.xml b/Instrument/AMDA/MEX/MARSIS.xml
index 2a644ba..1d861eb 100644
--- a/Instrument/AMDA/MEX/MARSIS.xml
+++ b/Instrument/AMDA/MEX/MARSIS.xml
@@ -5,15 +5,32 @@
<ResourceID>spase://CDPP/Instrument/AMDA/MEX/MARSIS</ResourceID>
<ResourceHeader>
<ResourceName>MARSIS</ResourceName>
- <ReleaseDate>2012-06-13T00:00:00Z</ReleaseDate>
- <Description>T </Description>
+ <AlternateName>Mars Advanced Radar for Subsurface and Ionosphere Sounding</AlternateName>
+ <ReleaseDate>2016-06-13T00:00:00Z</ReleaseDate>
+ <Description>MARSIS is a low frequency, nadir-looking pulse limited radar sounder
+ and altimeter with ground penetration capabilities, which uses synthetic aperture techniques and a secondary receiving antenna to isolate subsurface reflections.
+
+ The operation altitudes for MARSIS are up to 800 km above the Martian surface for subsurface sounding and up to 1200 km for ionospheric sounding.
+ In its standard operating mode, the instrument is capable of making measurements in 1 MHz wide bands centred at 1.8, 3.0, 4.0 and 5.0 MHz
+
+ This data set contains Total Electron Count data from the MARSIS subsurface sounder on Mars Express. Useful information can be found in the peer-reviewed article:
+ Correction of the ionospheric distortion on the MARSIS surface
+ sounding echoes, by Mouginot et al., Planetary and Space Science, Volume 56, Issue 7, p. 917-926, 2008</Description>
<Contact>
- <PersonID> </PersonID>
+ <PersonID>spase://SMWG/Person/Giovanni.Picardi</PersonID>
<Role>PrincipalInvestigator</Role>
- </Contact>
+ </Contact>
+ <InformationURL>
+ <Name>MARSIS ESA webpage</Name>
+ <URL>http://sci.esa.int/mars-express/34826-design/?fbodylongid=1601</URL>
+ </InformationURL>
</ResourceHeader>
<InstrumentType>Sounder</InstrumentType>
- <InvestigationName> </InvestigationName>
+ <InvestigationName></InvestigationName>
+ <OperatingSpan>
+ <StartDate>2005-06-01T00:00:00.0</StartDate>
+ <!-- Note : if possible note large data gaps; multiple tags -->
+ </OperatingSpan>
<ObservatoryID>spase://CDPP/Observatory/AMDA/MEX</ObservatoryID>
</Instrument>
</Spase>
diff --git a/NumericalData/AMDA/MEX/MARSIS/mex-marsis-ele.xml b/NumericalData/AMDA/MEX/MARSIS/mex-marsis-ele.xml
index 867ee69..0c0ac33 100644
--- a/NumericalData/AMDA/MEX/MARSIS/mex-marsis-ele.xml
+++ b/NumericalData/AMDA/MEX/MARSIS/mex-marsis-ele.xml
@@ -6,11 +6,33 @@
<ResourceHeader>
<ResourceName>total electron content</ResourceName>
<ReleaseDate>2015-10-15T10:14:00</ReleaseDate>
- <Description>Mars Express (MEX) Mars Advanced Radar For Subsurface and Ionosphere Sounding (MARSIS) data (tec)</Description>
- <Contact>
- <PersonID>spase://SMWG/Person/Elena.Budnik</PersonID>
- <Role>GeneralContact</Role>
+ <Description>The level 5 TEC data are derived following a method described in
+ details by Mouginot et al. Planetary Space Science, V56, 2008.
+ The correction method consists in finding the three parameters [ a1 ; a2 ; a3 ]
+ defining the signal distortion phase Δφ induced by the ionosphere.
+ In the time domain, the ionosphere distortion generates a delay and a spreading
+ of the radar pulse. It is clearly visible on MARSIS radargram without correction.
+ A by-product of the ionospheric correction is the TEC, that can be easily obtained
+ from the [ a1 ; a2 ; a3 ] parameters. [ a1 ; a2 ; a3 ] are
+ investigated in ordrer to get Δφ with the best SNR As initial conditions for this
+ optimization, we use the parameters fitting with a simplified Gaussian
+ density-profile of the ionosphere.
+Then the optimization is done by using the following constraints:
+ * A constraint on the vertical position of the surface echo estimated with the digital elevation model MOLA.
+ * A constraint on the SNR. The signal amplitude must be maximal after correction.
+</Description>
+ <Contact>
+ <PersonID>spase://CDPP/Person/W.Kofman</PersonID>
+ <Role>DataProducer</Role>
</Contact>
+ <Contact>
+ <PersonID>spase://CDPP/Person/C.Grima</PersonID>
+ <Role>DataProducer</Role>
+ </Contact>
+ <InformationURL>
+ <Name>MARSIS TEC documentation</Name>
+ <URL>ftp://psa.esac.esa.int/pub/mirror/MARS-EXPRESS/MARSIS/MEX-M-MARSIS-5-DDR-SS-TEC-V1.0/DOCUMENT/MARSIS_EAICD_TEC.PDF</URL>
+ </InformationURL>
</ResourceHeader>
<AccessInformation>
<RepositoryID>spase://SMWG/Repository/CDPP/AMDA</RepositoryID>
@@ -21,9 +43,11 @@
</AccessURL>
<Format>NetCDF</Format>
</AccessInformation>
- <ProviderName>ftp://psa.esac.esa.int/pub/mirror/MARS-EXPRESS/MARSIS/</ProviderName>
+ <ProviderName>PSA</ProviderName>
+ <ProviderResourceName>MEX-M-MARSIS-5-DDR-SS-TEC-[EXT1]-V1.0</ProviderResourceName>
+ <ProviderProcessingLevel>L5</ProviderProcessingLevel>
<InstrumentID>spase://CDPP/Instrument/AMDA/MEX/MARSIS</InstrumentID>
- <MeasurementType>EnergeticParticles</MeasurementType>
+ <MeasurementType>Waves</MeasurementType>
<TemporalDescription>
<TimeSpan>
<StartDate>2005-06-19T04:03:28Z</StartDate>
@@ -32,6 +56,14 @@
<Cadence_Min>PT1S</Cadence_Min>
<Cadence_Max>PT10S</Cadence_Max>
</TemporalDescription>
+ <Caveats>Data Quality Description :
+ * -1: PERCENTAGE OF LOW SNR DATA NOT AVAILABLE
+ * 0: NO LOW SNR DATA
+ * 1: LESS THAN 25% LOW SNR DATA
+ * 2: LESS THAN 50% LOW SNR DATA
+ * 3: LESS THAN 75% LOW SNR DATA
+ * 4: MORE THAN 75% LOW SNR DATA
+ </Caveats>
<ObservedRegion>Mars</ObservedRegion>
<Parameter>
<Name>tec</Name>
diff --git a/Person/C.Grima b/Person/C.Grima
new file mode 100644
index 0000000..3a8d928
--- /dev/null
+++ b/Person/C.Grima
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Spase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.spase-group.org/data/schema" xsi:schemaLocation="http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_2_0.xsd">
+ <Version>2.2.0</Version>
+ <Person>
+ <ResourceID>spase://CDPP/Person/C.Grima</ResourceID>
+ <ReleaseDate>2016-08-05T17:35:45Z</ReleaseDate>
+ <PersonName>Dr. Cyril Grima</PersonName>
+ <OrganizationName>Institute for Geophysics, Austin Tx, USA</OrganizationName>
+ </Person>
+</Spase>
diff --git a/Person/Giovanni.Picardi b/Person/Giovanni.Picardi
new file mode 100644
index 0000000..62a50a0
--- /dev/null
+++ b/Person/Giovanni.Picardi
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Spase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.spase-group.org/data/schema" xsi:schemaLocation="http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_2_0.xsd">
+ <Version>2.2.0</Version>
+ <Person>
+ <ResourceID>spase://SMWG/Person/Giovanni.Picardi</ResourceID>
+ <PersonName>Dr. Giovanni Picardi</PersonName>
+ <OrganizationName>Universita degli Studi di Roma</OrganizationName>
+ </Person>
+</Spase>
diff --git a/Person/W.Kofman b/Person/W.Kofman
new file mode 100644
index 0000000..3bb54bb
--- /dev/null
+++ b/Person/W.Kofman
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Spase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.spase-group.org/data/schema" xsi:schemaLocation="http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_2_0.xsd">
+ <Version>2.2.0</Version>
+ <Person>
+ <ResourceID>spase://CDPP/Person/W.Kofman</ResourceID>
+ <ReleaseDate>2016-08-05T17:35:45Z</ReleaseDate>
+ <PersonName>Dr. Wlodek Kofman</PersonName>
+ <OrganizationName>Laboratoire de Planétologie de Grenoble</OrganizationName>
+ <Email>wlodek.kofman@obs.ujf-grenoble.fr</Email>
+ </Person>
+</Spase>
--
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