This is an Ingest LDD file for the Voyager 1 mission. The Voyager1 class is the container for Voyager 1 mission-specific metadata elements. This section contains the simpleTypes that provide more constraints than those at the base data type level. The simpleTypes defined here build on the base data types. This is another component of the common dictionary and therefore falls within the common namespace. The mission_phase_name attribute provides the mission-defined name of a mission phase. The spacecraft_clock_start_count attribute provides the value of the spacecraft clock at the beginning of a time period of interest. The spacecraft_clock_stop_count attribute provides the value of the spacecraft clock at the end of a time period of interest.