<?xml version="1.0" encoding="UTF-8"?>
<?xml-model href="https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1I00.sch"
  schematypens="http://purl.oclc.org/dsdl/schematron"?>

<Product_Collection xmlns="http://pds.nasa.gov/pds4/pds/v1"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://pds.nasa.gov/pds4/pds/v1  https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1I00.xsd">
    <Identification_Area>
        <logical_identifier>urn:nasa:pds:mro_sharad_us_radargrams:data</logical_identifier>
        <version_id>8.0</version_id>
        <title>Mars Reconnaissance Orbiter SHARAD U.S. Radargrams Data Collection</title>
        <information_model_version>1.18.0.0</information_model_version>
        <product_class>Product_Collection</product_class>
        <Citation_Information>
            <publication_year>2024</publication_year>
            <description>Mars Reconnaissance Orbiter SHARAD U.S. Radargrams Data Collection</description>
        </Citation_Information>
        <Modification_History>
            <Modification_Detail>
                <modification_date>2026-02-27</modification_date>
                <version_id>8.0</version_id>
                <description>PDS Release 76</description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2025-12-01</modification_date>
                <version_id>7.0</version_id>
                <description>PDS Release 75</description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2025-08-29</modification_date>
                <version_id>6.0</version_id>
                <description>PDS Release 74</description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2025-05-30</modification_date>
                <version_id>5.0</version_id>
                <description>PDS Release 73</description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2025-02-28</modification_date>
                <version_id>4.0</version_id>
                <description>PDS Release 72</description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2024-12-02</modification_date>
                <version_id>3.0</version_id>
                <description>PDS Release 71</description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2024-08-30</modification_date>
                <version_id>2.0</version_id>
                <description>PDS Release 70</description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2024-07-29</modification_date>
                <version_id>1.0</version_id>
                <description>Initial version</description>
            </Modification_Detail>
        </Modification_History>
    </Identification_Area>
    <Context_Area>
        <Time_Coordinates>
            <start_date_time>2006-12-06T02:08:22.929Z</start_date_time>
            <stop_date_time xsi:nil="true" nilReason="unknown"/>
        </Time_Coordinates>
        <Primary_Result_Summary>
            <purpose>Science</purpose>
            <processing_level>Derived</processing_level>
            <Science_Facets>
                <discipline_name>Geosciences</discipline_name>
            </Science_Facets>
        </Primary_Result_Summary>
        <Investigation_Area>
            <name>MARS RECONNAISSANCE ORBITER</name>
            <type>Mission</type>
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:investigation:mission.mars_reconnaissance_orbiter</lid_reference>
                <reference_type>collection_to_investigation</reference_type>
            </Internal_Reference>
        </Investigation_Area>
        <Observing_System>
            <name>SHARAD</name>
            <Observing_System_Component>
                <name>MARS RECONNAISSANCE ORBITER</name>
                <type>Host</type>
                <Internal_Reference>
                    <lid_reference>urn:nasa:pds:context:instrument_host:spacecraft.mro</lid_reference>
                    <reference_type>is_instrument_host</reference_type>
                </Internal_Reference>
            </Observing_System_Component>
            <Observing_System_Component>
                <name>SHALLOW RADAR</name>
                <type>Instrument</type>
                <Internal_Reference>
                    <lid_reference>urn:nasa:pds:context:instrument:sharad.mro</lid_reference>
                    <reference_type>is_instrument</reference_type>
                </Internal_Reference>
            </Observing_System_Component>
        </Observing_System>
        <Target_Identification>
            <name>Mars</name>
            <type>Planet</type>
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:target:planet.mars</lid_reference>
                <reference_type>collection_to_target</reference_type>
            </Internal_Reference>
        </Target_Identification>
    </Context_Area>
    <Reference_List>
      <Internal_Reference>
         <lid_reference>urn:nasa:pds:context:resource:resource.mro_sharad_us_radargrams_online</lid_reference>
         <reference_type>has_resource</reference_type>
      </Internal_Reference>
    </Reference_List>
    <Collection>
        <collection_type>Data</collection_type>
    </Collection>
    <File_Area_Inventory>
        <File>
            <file_name>collection_data_inventory.csv</file_name>
        </File>
        <Inventory>
            <offset unit="byte">0</offset>
            <parsing_standard_id>PDS DSV 1</parsing_standard_id>
            <records>74286</records>
            <record_delimiter>Carriage-Return Line-Feed</record_delimiter>
            <field_delimiter>Comma</field_delimiter>
            <Record_Delimited>
                <fields>2</fields>
                <groups>0</groups>
                <maximum_record_length unit="byte">256</maximum_record_length>
                <Field_Delimited>
                    <name>Member Status</name>
                    <field_number>1</field_number>
                    <data_type>ASCII_String</data_type>
                    <maximum_field_length unit="byte">1</maximum_field_length>
                    <description>
                        This column specifies the Member Status of the files that comprise the collection.  
                    </description>
                </Field_Delimited>
                <Field_Delimited>
                    <name>LIDVID_LID</name>
                    <field_number>2</field_number>
                    <data_type>ASCII_LIDVID_LID</data_type>
                    <maximum_field_length unit="byte">255</maximum_field_length>
                    <description>
                        This column specifies the LIDVID of the files that comprise the collection.  
                    </description>
                </Field_Delimited>
            </Record_Delimited>
            <reference_type>inventory_has_member_product</reference_type>
        </Inventory>
    </File_Area_Inventory>
</Product_Collection>
