PDS4_MSN_IngestLDD.xml

<?xml version="1.0" encoding="UTF-8"?>
<?xml-model 
    href="http://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1E00.sch"
    schematypens="http://purl.oclc.org/dsdl/schematron"?>

<Ingest_LDD 
    xmlns="http://pds.nasa.gov/pds4/pds/v1"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:msn="http://pds.nasa.gov/pds4/msn/v1" 
    xmlns:pds="http://pds.nasa.gov/pds4/pds/v1"
    xsi:schemaLocation="https://pds.nasa.gov/pds4/pds/v1 
    https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1E00.xsd">
  
    <name>Mission Information Commons</name>
    <ldd_version_id>1.3.1.0</ldd_version_id>
    <dictionary_type>Discipline</dictionary_type>
    <full_name>Trent Hare</full_name>
    <steward_id>img</steward_id>
    <namespace_id>msn</namespace_id>
    <comment>
      ## CHANGE LOG ##
      1.0.0.0
      - Initial version
      
      1.1.0.0
      - Upgraded to v1B00 of the IM.
      - Re-classified this dictionary as a Discipline Dictionary, instead of Mission Dictionary.
      - Renamed Orbital_Mission_Information to Orbital_Mission, Surface_Mission_Information to Surface_Mission
      
      1.2.0.0
      - Upgraded to v1D00 of the IM.
      - Add instrument_clock_start and allow helicopter use case.
      - Add instrument_start_time. This is instrument_clock_start converted to UTC.
      - Updated the definition for start_sol_number to allow a primary sol to be 
        defined for mosaic products inplace of the actual starting sol value.
       
      1.3.0.0
      - Upgraded to v1E00 of the IM
      - Add year_number, year_number_reference attributes to Surface_Mission
      - Added Observation_Context class and attrbitues active_flight_computer, active_flight_imu under Mission_Information

      1.3.0.2
      - add instrument_clock_stop and instrument_stop_time
      - mission_phase_name and mission_phase_identifier to unbounded (multi)

     1.3.0.3
     - add ephemeris_start_time and ephemeris_stop_time to have available at the mission level.
         We do understand et_start and et_stop are also available from the nucspec dictionary but
         this is required by THEMIS which is not a nucspec instrument.

     1.3.1.0
     - add orbit_identifier to Orbital_Mission class.

    </comment>
    <last_modification_date_time>2024-09-07T09:00:00Z</last_modification_date_time>
  
  <!-- Begin attribute definitions -->
  
  <!-- Begin attribute definitions for the Mission_Information class --> 
  <DD_Attribute>
    <name>mission_phase_name</name>
    <version_id>1.0</version_id>
    <local_identifier>mission_phase_name</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <definition>The mission_phase_name identifies a time period within the mission.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Preserved</value_data_type>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>mission_phase_identifier</name>
    <version_id>1.0</version_id>
    <local_identifier>mission_phase_identifier</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Cristina De Cesare</submitter_name>
    <definition>The mission_phase_identifier attribute provides
      an identifier for a mission phase.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
    </DD_Value_Domain>
  </DD_Attribute> 
  <DD_Attribute>
    <name>release_number</name>
    <version_id>1.0</version_id>
    <local_identifier>release_number</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <definition>Release_number is the number of a scheduled release of data from the provider to PDS. The
      first data release is typically Release 1. The release_number for a given product is always the
      first release in which it appears, and does not change if the product is revised
      later.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Integer</value_data_type>
      <minimum_value>1</minimum_value>
    </DD_Value_Domain>
  </DD_Attribute> 
  
  <DD_Attribute>
    <name>product_type_name</name>
    <version_id>1.0</version_id>
    <local_identifier>product_type_name</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <definition>The product_type_name identifies a group of data products within a collection that have
      some property in common, such as processing level, resolution, or instrument-specific setting.
    </definition>
    <DD_Value_Domain>
      <enumeration_flag>true</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
    </DD_Value_Domain>
  </DD_Attribute>

  <DD_Attribute>
    <name>spacecraft_clock_start</name>
    <version_id>1.0</version_id>
    <local_identifier>spacecraft_clock_start</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <!-- TODO finesse definition -->
    <definition>The spacecraft_clock_start is the value of the spacecraft clock at the beginning of the observation.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <formation_rule>Value should be of the form: nnnnnnnnn.mmm</formation_rule>
      <minimum_characters>1</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>spacecraft_clock_stop</name>
    <version_id>1.0</version_id>
    <local_identifier>spacecraft_clock_stop</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <!-- TODO finesse definition -->
    <definition>The spacecraft_clock_stop is the value of the spacecraft clock at the end of the observation.
      spacecraft_clock_stop should only be used if there's also a spacecraft_clock_start value.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <formation_rule>Value should be of the form: nnnnnnnnn.mmm</formation_rule>
      <minimum_characters>1</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>spacecraft_clock_partition</name>
    <version_id>1.0</version_id>
    <local_identifier>spacecraft_clock_partition</local_identifier>
    <nillable_flag>false</nillable_flag>
    <submitter_name>Amy Culver</submitter_name>
    <definition>The spacecraft_clock_partition provides the clock partition active for the
      spacecraft_clock attribute.</definition>
    <comment>Definition taken from PDS3 dictionary; may need updating. -- EDR</comment>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Integer</value_data_type>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>instrument_clock_start</name>
    <version_id>1.0</version_id>
    <local_identifier>instrument_clock_start</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Trent Hare</submitter_name>
    <definition>The value of the clock returned by the instrument at the beginning of 
      the observation. This may differ from the spacecraft clock due to several factors 
      such as clock drift, or differences in definition of start time (for example, 
      spacecraft clock might be when an image was commanded, but instrument clock might 
      be after autoexpoure or autofocus processes), or differences in the time epoch 
      between the instrument and the main spacecraft.
    </definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <formation_rule>Value should be of the form: nnnnnnnnn.mmm</formation_rule>
      <minimum_characters>1</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>instrument_clock_stop</name>
    <version_id>1.0</version_id>
    <local_identifier>instrument_clock_stop</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Trent Hare</submitter_name>
    <definition>The value of the clock returned by the instrument at the end of 
      the observation. This may differ from the spacecraft clock due to several factors 
      such as clock drift, or differences in definition of stop time, or differences 
      in the time epoch between the instrument and the main spacecraft.
    </definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <formation_rule>Value should be of the form: nnnnnnnnn.mmm</formation_rule>
      <minimum_characters>1</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>
 
  <DD_Attribute>
    <name>instrument_start_time</name>
    <version_id>1.0</version_id>
    <local_identifier>instrument_start_time</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Trent Hare</submitter_name>
    <definition>This is instrument_clock_start converted to UTC</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Date_Time_YMD_UTC</value_data_type>
      <formation_rule>yyyy-mm-ddThh:mm:ss.sssZ</formation_rule>
      <unit_of_measure_type>Units_of_None</unit_of_measure_type>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>instrument_stop_time</name>
    <version_id>1.0</version_id>
    <local_identifier>instrument_stop_time</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Trent Hare</submitter_name>
    <definition>This is instrument_clock_stop converted to UTC</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Date_Time_YMD_UTC</value_data_type>
      <formation_rule>yyyy-mm-ddThh:mm:ss.sssZ</formation_rule>
      <unit_of_measure_type>Units_of_None</unit_of_measure_type>
    </DD_Value_Domain>
  </DD_Attribute>
  
  <DD_Attribute>
    <name>ephemeris_start_time</name>
    <version_id>1.0</version_id>
    <local_identifier>ephemeris_start_time</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Trent Hare</submitter_name>
    <definition>
      The time of data acquisition of the leading edge of the detector array.  
      Value given in spacecraft event time (SCET), ET format. 
    </definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Real</value_data_type>
      <unit_of_measure_type>Units_of_Time</unit_of_measure_type>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>ephemeris_stop_time</name>
    <version_id>1.0</version_id>
    <local_identifier>ephemeris_stop_time</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Trent Hare</submitter_name>
    <definition>The time of the end of data acquisition. This is often calculated from the start time and image duration. 
      Value given in spacecraft event time (SCET), ET format. </definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Real</value_data_type>
      <unit_of_measure_type>Units_of_Time</unit_of_measure_type>
    </DD_Value_Domain>
  </DD_Attribute>


  <!-- End attribute definitions for the Mission_Information class -->
  
  <!-- Start attribute definitions for Orbital_Mission class -->
  <DD_Attribute>
    <name>start_orbit_number</name>
    <version_id>1.0</version_id>
    <local_identifier>start_orbit_number</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <definition>The start_orbit_number attribute provides the
      first in a series of numbers that represent a set of orbital
      revolutions of one body around another.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <minimum_characters>1</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>stop_orbit_number</name>
    <version_id>1.0</version_id>
    <local_identifier>stop_orbit_number</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <definition>The stop_orbit_number attribute provides the
      last in a series of numbers that represent s set of orbital
      revolutions of one body around another.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <minimum_characters>1</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>orbit_identifier</name>
    <version_id>1.0</version_id>
    <local_identifier>orbit_identifier</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>T. Hare</submitter_name>
    <definition>Missions such as Cassini, JUNO and MRO, include an attribute orbit identifier whihch is 
      more grainular then mission phase. This can be skipped or has been set to N/A for cruise images.
    </definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <minimum_characters>1</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>
  <!-- End attribute definitions for Orbital_Mission class -->
  
  <!-- Start attribute definitions for Surface_Mission class -->
  
  <DD_Attribute>
    <name>start_sol_number</name>
    <version_id>1.0</version_id>
    <local_identifier>start_sol_number</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <definition>The start_sol_number is the number of the Mars day on which an observation began.
      Landing day is Sol 0. For multi-sol observations, such as mosaics, if start_sol_number is 
      given but stop_sol_number is not, the start_sol_number may instead be interpreted as the 
      primary, or most important, sol for this observation.</definition>
    <comment>See comment for start_sol_number.</comment>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Integer</value_data_type>
      <minimum_value>0</minimum_value>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>stop_sol_number</name>
    <version_id>1.0</version_id>
    <local_identifier>stop_sol_number</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <definition>The stop_sol_number is the number of the Mars day on which an observation ended.
      Landing day is Sol 0. The stop_sol_number should only be used if there's also a start_sol_number.</definition>
    <comment>See comment for start_sol_number.</comment>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Integer</value_data_type>
      <minimum_value>0</minimum_value>
    </DD_Value_Domain>
  </DD_Attribute>
  
  <DD_Attribute>
    <name>start_local_mean_solar_time</name>
    <version_id>1.0</version_id>
    <local_identifier>start_local_mean_solar_time</local_identifier>
    <nillable_flag>false</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <!-- TODO fix definition -->
    <definition>start_local_mean_solar_time is the local mean solar time, as defined in the main
      PDS4 data dictionary.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <minimum_characters>8</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>stop_local_mean_solar_time</name>
    <version_id>1.0</version_id>
    <local_identifier>stop_local_mean_solar_time</local_identifier>
    <nillable_flag>false</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <!-- TODO fix definition -->
    <definition>stop_local_mean_solar_time is the local mean solar time, as defined in the main
      PDS4 data dictionary.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <minimum_characters>8</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>start_local_true_solar_time</name>
    <version_id>1.0</version_id>
    <local_identifier>start_local_true_solar_time</local_identifier>
    <nillable_flag>false</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <!-- TODO fix definition -->
    <definition>start_local_true_solar_time is the local true solar time, as defined in the main
      PDS4 data dictionary.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <minimum_characters>8</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>stop_local_true_solar_time</name>
    <version_id>1.0</version_id>
    <local_identifier>stop_local_true_solar_time</local_identifier>
    <nillable_flag>false</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <!-- TODO fix definition -->
    <definition>stop_local_true_solar_time is the local true solar time, as defined in the main
      PDS4 data dictionary.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <minimum_characters>8</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>solar_longitude</name>
    <version_id>1.0</version_id>
    <local_identifier>solar_longitude</local_identifier>
    <nillable_flag>false</nillable_flag>
    <submitter_name>Susan Slavney</submitter_name>
    <definition>solar_longitude is the solar longitude, as defined in the main PDS4 data
      dictionary.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Real</value_data_type>
      <minimum_value>0</minimum_value>
      <maximum_value>360</maximum_value>
      <unit_of_measure_type>Units_of_Angle</unit_of_measure_type>
    </DD_Value_Domain>
  </DD_Attribute>
  
  <DD_Attribute>
    <name>start_local_mean_solar_time_sol</name>
    <version_id>1.0</version_id>
    <local_identifier>start_local_mean_solar_time_sol</local_identifier>
    <nillable_flag>false</nillable_flag>
    <submitter_name>Amy Culver</submitter_name>
    <definition>The start_local_mean_solar_time_sol element specifies the number of solar days elapsed
      since a reference day (e.g. the day on which a landing vehicle set down) for local mean solar
      time (LMST). Days are measured in rotations of the planet in question from midnight to
      midnight. The reference day is '0', as Landing day is Sol 0. If before Landing day, then value
      will be less than or equal to '0'and can be negative.</definition>
    <comment>Definition was adapted from PDS3 PSDD definition for msl:local_true_solar_time_sol and
      needs to be verified. -- EDR</comment>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Integer</value_data_type>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>stop_local_mean_solar_time_sol</name>
    <version_id>1.0</version_id>
    <local_identifier>stop_local_mean_solar_time_sol</local_identifier>
    <nillable_flag>false</nillable_flag>
    <submitter_name>Amy Culver</submitter_name>
    <definition>The stop_local_mean_solar_time_sol element specifies the number of solar days elapsed
      since a reference day (e.g. the day on which a landing vehicle set down) for local mean solar
      time (LMST). Days are measured in rotations of the planet in question from midnight to
      midnight. The reference day is '0', as Landing day is Sol 0. If before Landing day, then value
      will be less than or equal to '0'and can be negative. 
      The stop_local_mean_solar_time_sol should only be used if there's also a start_local_mean_solar_time_sol.</definition>
    <comment>Definition was adapted from PDS3 PSDD definition for msl:local_true_solar_time_sol and
      needs to be verified. -- EDR</comment>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Integer</value_data_type>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>start_local_true_solar_time_sol</name>
    <version_id>1.0</version_id>
    <local_identifier>start_local_true_solar_time_sol</local_identifier>
    <nillable_flag>false</nillable_flag>
    <submitter_name>Amy Culver</submitter_name>
    <definition>The start_local_true_solar_time_sol element specifies the number of solar days elapsed
      since a reference day (e.g. the day on which a landing vehicle set down) for local true solar
      time (LTST). Days are measured in rotations of the planet in question from midnight to
      midnight. The reference day is '0', as Landing day is Sol 0. If before Landing day, then value
      will be less than or equal to '0'and can be negative.</definition>
    <comment>Definition taken from PDS3 PSDD (msl:local_true_solar_time_sol) and may need updating.
      (Particularly need to verify reference day.) -- EDR</comment>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Integer</value_data_type>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>stop_local_true_solar_time_sol</name>
    <version_id>1.0</version_id>
    <local_identifier>stop_local_true_solar_time_sol</local_identifier>
    <nillable_flag>false</nillable_flag>
    <submitter_name>Amy Culver</submitter_name>
    <definition>The stop_local_true_solar_time_sol element specifies the number of solar days elapsed
      since a reference day (e.g. the day on which a landing vehicle set down) for local true solar
      time (LTST). Days are measured in rotations of the planet in question from midnight to
      midnight. The reference day is '0', as Landing day is Sol 0. If before Landing day, then value
      will be less than or equal to '0'and can be negative.
      The stop_local_true_solar_time_sol should only be used if there is also a start_local_true_solar_time_sol.</definition>
    <comment>Definition taken from PDS3 PSDD (msl:local_true_solar_time_sol) and may need updating.
      (Particularly need to verify reference day.) -- EDR</comment>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Integer</value_data_type>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>year_number</name>
    <version_id>1.0</version_id>
    <local_identifier>year_number</local_identifier>
    <nillable_flag>false</nillable_flag>
    <submitter_name>Trent Hare</submitter_name>
    <definition>Identifies the year of the observation, using the definition for year 
      specified in year_number_reference.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Integer</value_data_type>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>year_number_reference</name>
    <version_id>1.0</version_id>
    <local_identifier>year_number_reference</local_identifier>
    <nillable_flag>false</nillable_flag>
    <submitter_name>Trent Hare</submitter_name>
    <definition>Identifies the system used to measure year_number. Current values 
      include: Mars Year: Mars year as defined by Piqueaux et al (2015), extending 
      Clancy et al (2000). Mars Year 1 started on April 11, 1955 at Ls 
      (areocentric solar longitude) = 0, with subsequent years starting at 
      Ls=0. Reference: https://doi.org/10.1016/j.icarus.2014.12.014</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <minimum_characters>1</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>

  <!-- End attribute definitions for Surface_Mission class -->

  <!-- Start attribute definitions for Observation_Context class -->
  
  <DD_Attribute>
    <name>active_flight_computer</name>
    <version_id>1.0</version_id>
    <local_identifier>active_flight_computer</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Trent Hare</submitter_name>
    <definition>Identifies which of potentially several flight computers were 
      used for this observation.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <minimum_characters>1</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>
  <DD_Attribute>
    <name>active_flight_imu</name>
    <version_id>1.0</version_id>
    <local_identifier>active_flight_imu</local_identifier>
    <nillable_flag>true</nillable_flag>
    <submitter_name>Trent Hare</submitter_name>
    <definition>Identifies which of potentially several inertial measurement 
      units (IMUs) were used for this observation.</definition>
    <DD_Value_Domain>
      <enumeration_flag>false</enumeration_flag>
      <value_data_type>ASCII_Short_String_Collapsed</value_data_type>
      <minimum_characters>1</minimum_characters>
      <maximum_characters>255</maximum_characters>
    </DD_Value_Domain>
  </DD_Attribute>
  
  <!-- End attribute definitions for Observation_Context class -->

  <!-- End attribute definitions --> 



  <!-- Begin class definitions -->
  
  <!--  Mission_Information Class Definition -->
  <DD_Class>
    <name>Mission_Information</name>
    <version_id>1.0</version_id>
    <local_identifier>Mission_Information</local_identifier>
    <submitter_name>Susan Slavney</submitter_name>
    <!-- TODO improve definition -->
    <definition>The Mission_Information class provides information about a mission.</definition>
    <abstract_flag>false</abstract_flag>
    <element_flag>true</element_flag>
    <DD_Association>
      <identifier_reference>mission_phase_name</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>*</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>mission_phase_identifier</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>*</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>release_number</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>product_type_name</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>spacecraft_clock_start</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>spacecraft_clock_stop</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>spacecraft_clock_partition</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>instrument_clock_start</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>instrument_clock_stop</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>instrument_start_time</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>instrument_stop_time</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>ephemeris_start_time</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>ephemeris_stop_time</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>Orbital_Mission</identifier_reference>
      <reference_type>component_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>Surface_Mission</identifier_reference>
      <reference_type>component_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>Observation_Context</identifier_reference>
      <reference_type>component_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
  </DD_Class>
  <!--  End of Mission_Information Class Definition -->
  
  
  <DD_Class>
    <name>Orbital_Mission</name>
    <version_id>1.0</version_id>
    <local_identifier>Orbital_Mission</local_identifier>
    <submitter_name>Cristina De Cesare</submitter_name>
    <!-- TODO improve definition -->
    <definition>The Orbital_Mission class provides information about an orbital mission.</definition>
    <abstract_flag>false</abstract_flag>
    <DD_Association>
      <identifier_reference>start_orbit_number</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>stop_orbit_number</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>orbit_identifier</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
  </DD_Class>
  
  <DD_Class>
    <name>Surface_Mission</name>
    <version_id>1.0</version_id>
    <local_identifier>Surface_Mission</local_identifier>
    <submitter_name>Cristina De Cesare</submitter_name>
    <!-- TODO improve definition -->
    <definition>The Surface_Mission class provides information about a surface mission.</definition>
    <abstract_flag>false</abstract_flag>
    <DD_Association>
      <identifier_reference>start_sol_number</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>stop_sol_number</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>start_local_mean_solar_time</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>stop_local_mean_solar_time</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>start_local_mean_solar_time_sol</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>stop_local_mean_solar_time_sol</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>start_local_true_solar_time</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>stop_local_true_solar_time</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>start_local_true_solar_time_sol</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>stop_local_true_solar_time_sol</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>solar_longitude</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>year_number</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>year_number_reference</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
  </DD_Class>

  <DD_Class>
    <name>Observation_Context</name>
    <version_id>1.0</version_id>
    <local_identifier>Observation_Context</local_identifier>
    <submitter_name>Trent Hare</submitter_name>
    <definition>Describes the vehicle context at the time the observation was taken.</definition>
    <abstract_flag>false</abstract_flag>
    <DD_Association>
      <identifier_reference>active_flight_computer</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
    <DD_Association>
      <identifier_reference>active_flight_imu</identifier_reference>
      <reference_type>attribute_of</reference_type>
      <minimum_occurrences>0</minimum_occurrences>
      <maximum_occurrences>1</maximum_occurrences>
    </DD_Association>
  </DD_Class>

  <!-- End class definitions -->
  
  
  <!-- Begin rule definitions -->
  
  <!-- TODO make this specific to InSight? 
    Is there some way to have this rule only trigger when some attribute from another namespace is "InSight"? -->
  <!--
  <DD_Rule>
    <local_identifier>product_type_name_value_check</local_identifier>
    <rule_context>//msn:Mission_Information</rule_context>
    <DD_Rule_Statement>
      <rule_type>Assert</rule_type>
      <rule_test>msn:product_type_name = ('EDR', 'EJP', 'ERP', 'LIN', 'BAY', 'ILC', 'ILM', 'ILP', 'ILT', 'MSK', 'IOF', 'IOI', 'RAD', 'RAF', 'RAS', 'RDM',
        'RIE', 'RIF', 'RSM', 'DDD', 'DDL', 'DDS', 'DSE', 'DSG', 'DSL', 'DSP', 'DSR', 'DSS', 'MDS', 'RUF', 'DFF', 'DFL', 'DFS', 'MXY', 'XYE', 'XYR', 'XYZ',
        'XRM', 'XYM', 'XYF', 'XYO', 'DEM', 'XXX', 'YYY', 'ZZZ', 'XXF', 'YYF', 'ZZF', 'UVF', 'UVO', 'UVP', 'UVS', 'UVT', 'UVW', 'UUU', 'VVV', 'WWW', 'UUF',
        'VVF', 'WWF', 'RNE', 'RNF', 'RNG', 'RNM', 'RNO', 'RNR', 'ARK', 'ARM', 'ARO', 'MAR', 'SEN', 'SHD', 'SHO', 'SLO', 'SLP', 'SMG', 'SMO', 'SNO', 'SNT',
        'SRD', 'IEF', 'IEP', 'GUH', 'GUS', 'RUH', 'RUS', 'RUW', 'RUK', 'TDS', 'TFH', 'TFS', 'TFW', 'WSH', 'WSS', 'UIH', 'UIS', 'UIW', 'UPH', 'UPS', 'UPW',
        'ZIH', 'ZIS', 'ZIW', 'XIH', 'XIS', 'XIW', 'TAU', 'TEN', 'TER', 'CNR', 'CNS', 'CNF', 'CNB', 'CNG', 'CSR', 'CSS', 'CSF', 'CSB', 'CSG', 'CPR', 'CPS',
        'CPF', 'CPB', 'CPG', 'CWR', 'CWS', 'CWF', 'CWB', 'CWG', 'MNR', 'MNS', 'MNF', 'MNB', 'MNG', 'MSR', 'MSS', 'MSF', 'MSB', 'MSG', 'MPR', 'MPS', 'MPF',
        'MPB', 'MPG', 'MWR', 'MWS', 'MWF', 'MWB', 'MWG')</rule_test>
      <rule_message>MSN:error:product_type_name_value_check: The attribute msn:product_type_name must be equal to one of the following values: .</rule_message>
    </DD_Rule_Statement>
  </DD_Rule>
  -->
  
  <!-- End rule defintions -->
  
</Ingest_LDD>