<?xml version="1.0" encoding="UTF-8"?> 
<?xml-model href="https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1A10.sch" schematypens="http://purl.oclc.org/dsdl/schematron"?>
<?xml-model href="https://pds.nasa.gov/pds4/disp/v1/PDS4_DISP_1700.sch" schematypens="http://purl.oclc.org/dsdl/schematron"?>
<?xml-model href="https://pds.nasa.gov/pds4/sp/v1/PDS4_SP_1100.sch" schematypens="http://purl.oclc.org/dsdl/schematron"?>
<?xml-model href="https://pds.nasa.gov/pds4/cart/v1/PDS4_CART_1700.sch" schematypens="http://purl.oclc.org/dsdl/schematron"?>

<Product_Observational xmlns="http://pds.nasa.gov/pds4/pds/v1"
    xmlns:disp="http://pds.nasa.gov/pds4/disp/v1"
    xmlns:sp="http://pds.nasa.gov/pds4/sp/v1"
    xmlns:cart="http://pds.nasa.gov/pds4/cart/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_1A10.xsd
    http://pds.nasa.gov/pds4/disp/v1 https://pds.nasa.gov/pds4/disp/v1/PDS4_DISP_1700.xsd
    http://pds.nasa.gov/pds4/sp/v1 https://pds.nasa.gov/pds4/sp/v1/PDS4_SP_1100.xsd
    http://pds.nasa.gov/pds4/cart/v1 https://pds.nasa.gov/pds4/cart/v1/PDS4_CART_1700.xsd">
    
    <Identification_Area>
        <!-- A product is one multiband image tile. 54 tiles cover the whole planet. -->
        <logical_identifier>urn:nasa:pds:izenberg_pdart14_meap:data_imagecube:uvvs_cube_64ppd_h15sp_fid</logical_identifier>
        <version_id>1.0</version_id>
        <title>UVVS Spectral Footprints IDs Cube of Mercury Tile 15SP</title>
        <information_model_version>1.10.1.0</information_model_version>
        <product_class>Product_Observational</product_class>
    </Identification_Area>
    
    <Observation_Area>
        <Time_Coordinates>
            <start_date_time>2004-08-13Z</start_date_time>
            <stop_date_time>2015-04-30Z</stop_date_time>
        </Time_Coordinates>
        <Investigation_Area>
            <name>MESSENGER</name>
            <type>Mission</type>
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:investigation:mission.messenger</lid_reference>
                <reference_type>data_to_investigation</reference_type>
            </Internal_Reference>
        </Investigation_Area>
        <Observing_System>
            <name>MESSENGER MASCS</name>
            <Observing_System_Component>
                <name>MESSENGER</name>
                <type>Spacecraft</type>
                <Internal_Reference>
                    <lid_reference>urn:nasa:pds:context:instrument_host:spacecraft.mess</lid_reference>
                    <reference_type>is_instrument_host</reference_type>
                </Internal_Reference>
            </Observing_System_Component>
            <Observing_System_Component>
                <name>MASCS</name>
                <type>Instrument</type>
                <Internal_Reference>
                    <lid_reference>urn:nasa:pds:context:instrument:mascs.mess</lid_reference>
                    <reference_type>is_instrument</reference_type>
                </Internal_Reference>
            </Observing_System_Component>
        </Observing_System>
        <Target_Identification>
            <name>Mercury</name>
            <type>Planet</type>
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:target:planet.mercury</lid_reference>
                <reference_type>data_to_target</reference_type>
            </Internal_Reference>
        </Target_Identification>
        
        <Discipline_Area>
        
            <disp:Display_Settings>
                <Local_Internal_Reference>
                    <local_identifier_reference>Spectral_Cube_Object</local_identifier_reference>
                    <local_reference_type>display_settings_to_array</local_reference_type>
                </Local_Internal_Reference>
                <disp:Display_Direction>
                    <disp:horizontal_display_axis>Sample</disp:horizontal_display_axis>
                    <disp:horizontal_display_direction>Left to Right</disp:horizontal_display_direction>
                    <disp:vertical_display_axis>Line</disp:vertical_display_axis>
                    <disp:vertical_display_direction>Top to Bottom</disp:vertical_display_direction>
                </disp:Display_Direction>
            </disp:Display_Settings>

            <sp:Spectral_Characteristics>
                <sp:bin_width_desc>Bin width is an average of spectral pixels of
                    the UVVS DDR (2 DDR pixels of the MUV detector) into 46 channels
                    (~2 nm each) with band centers from 210 to 300 nm.
                    (See UVVS CDR/DDR/DAP SIS).
                </sp:bin_width_desc>
                <sp:Local_Internal_Reference>
                    <sp:local_identifier_reference>Spectral_Cube_Object</sp:local_identifier_reference>
                    <sp:local_reference_type>spectral_characteristics_to_array_object</sp:local_reference_type>
                </sp:Local_Internal_Reference>
                <sp:Spectral_Lookup>
                    <!-- The sp:Internal_Reference class occurs twice here as required by PDS4_SP_1100.xsd -->
                    <sp:Internal_Reference>
                        <lid_reference>urn:nasa:pds:izenberg_pdart14_meap:data_imagecube:uvvs_wavelengths</lid_reference>
                        <reference_type>spectral_characteristics_to_bin_center_values</reference_type>
                    </sp:Internal_Reference>
                    <sp:Internal_Reference>
                        <lid_reference>urn:nasa:pds:izenberg_pdart14_meap:data_imagecube:uvvs_wavelengths</lid_reference>
                        <reference_type>spectral_characteristics_to_bin_center_values</reference_type>
                    </sp:Internal_Reference>
                </sp:Spectral_Lookup>
            </sp:Spectral_Characteristics>
            
            <cart:Cartography>
                <cart:Spatial_Domain>
                    <cart:Bounding_Coordinates>
                        <cart:west_bounding_coordinate unit="deg">-180.000000</cart:west_bounding_coordinate>
                        <cart:east_bounding_coordinate unit="deg">180.000000</cart:east_bounding_coordinate>
                        <cart:north_bounding_coordinate unit="deg">-64.000000</cart:north_bounding_coordinate>
                        <cart:south_bounding_coordinate unit="deg">-90.000000</cart:south_bounding_coordinate>
                    </cart:Bounding_Coordinates>
                </cart:Spatial_Domain>
                <cart:Spatial_Reference_Information>
                    <cart:Horizontal_Coordinate_System_Definition>
                        <cart:Planar>
                            <cart:Map_Projection>
                                <cart:map_projection_name>Polar Stereographic</cart:map_projection_name>
                                <cart:Equirectangular>
                                    <cart:standard_parallel_1 unit="deg">-90</cart:standard_parallel_1>
                                    <cart:longitude_of_central_meridian unit="deg">0.00</cart:longitude_of_central_meridian>
                                    <cart:latitude_of_projection_origin unit="deg">0.0</cart:latitude_of_projection_origin>
                                </cart:Equirectangular>
                            </cart:Map_Projection>
                            <cart:Planar_Coordinate_Information>
                                <cart:planar_coordinate_encoding_method>Coordinate Pair</cart:planar_coordinate_encoding_method>
                                <cart:Coordinate_Representation>
                                    <cart:pixel_resolution_x unit="m/pixel">665.107606</cart:pixel_resolution_x>
                                    <cart:pixel_resolution_y unit="m/pixel">665.107606</cart:pixel_resolution_y>
                                    <cart:pixel_scale_x unit="pixel/deg">64.013043</cart:pixel_scale_x>
                                    <cart:pixel_scale_y unit="pixel/deg">64.013043</cart:pixel_scale_y>
                                </cart:Coordinate_Representation>
                            </cart:Planar_Coordinate_Information>                            
                            <cart:Geo_Transformation>
                                <cart:upperleft_corner_x unit="m">-1126359.730863</cart:upperleft_corner_x>
                                <cart:upperleft_corner_y unit="m">1126359.730863</cart:upperleft_corner_y>
                            </cart:Geo_Transformation>
                        </cart:Planar>
                        <cart:Geodetic_Model>
                            <cart:latitude_type>planetocentric</cart:latitude_type>
                            <cart:spheroid_name>Mercury</cart:spheroid_name>
                            <cart:semi_major_radius unit="km">2439.4</cart:semi_major_radius>
                            <cart:semi_minor_radius unit="km">2439.4</cart:semi_minor_radius>
                            <cart:polar_radius unit="km">2439.4</cart:polar_radius>
                            <cart:longitude_direction>Positive East</cart:longitude_direction>
                        </cart:Geodetic_Model>
                    </cart:Horizontal_Coordinate_System_Definition>
                </cart:Spatial_Reference_Information>
            </cart:Cartography>
            
        </Discipline_Area>
    </Observation_Area>
    
    <File_Area_Observational>
        <File>
            <file_name>uvvs_cube_64ppd_h15sp_fid.img</file_name>
            <creation_date_time>2017-10-26T11:23:31</creation_date_time>
            <file_size unit="byte">1055402748</file_size>
            <comment>UVVS Spectral Footprint ID Image Cube Tile 15SP in standard PDS4 IMG format.
                     The image cube has 46 spectral bands.</comment>
        </File>
        
        <!-- Image Cube Core -->
        <Array_3D_Spectrum>
            <name>UVVS Footprint ID Image Cube Tile 15SP</name>
            <local_identifier>Spectral_Cube_Object</local_identifier>            
            <offset unit="byte">0</offset>
            <axes>3</axes>
            <axis_index_order>Last Index Fastest</axis_index_order>
            <description>The core of the image cube has 46 spectral footprint ID bands with center
                wavelengths from 210 to 300 nanometers. Wavelengths are given
                in the UVVS Wavelength file. Bands have 3387 lines and 3387
                2-byte signed LSB integer pixels per line. Bands are stored
                sequentially in the cube.</description>
            <Element_Array>
                <!-- Pixels are integer, 2-byte, LSB ("Intel") values -->
                <data_type>SignedLSB2</data_type>
            </Element_Array>
            <Axis_Array>
                <axis_name>Band</axis_name>
                <elements>46</elements>
                <sequence_number>1</sequence_number>
            </Axis_Array>
            <Axis_Array>
                <axis_name>Line</axis_name>
                <elements>3387</elements>
                <sequence_number>2</sequence_number>
            </Axis_Array>
            <Axis_Array>
                <axis_name>Sample</axis_name>
                <elements>3387</elements>
                <sequence_number>3</sequence_number>
            </Axis_Array>
            <Special_Constants>
                <missing_constant>-999.0</missing_constant>
            </Special_Constants>
        </Array_3D_Spectrum>

    </File_Area_Observational>
    
    <File_Area_Observational_Supplemental>
        <File>
            <file_name>uvvs_cube_64ppd_h15sp_fid.hdr</file_name>
            <comment>Supplemental information used to display image with ENVI commercial software</comment>
        </File>
        <Stream_Text>
            <offset unit="byte">0</offset>
            <parsing_standard_id>7-Bit ASCII Text</parsing_standard_id>
            <record_delimiter>Carriage-Return Line-Feed</record_delimiter>
        </Stream_Text>
    </File_Area_Observational_Supplemental>
    
</Product_Observational>