stc:dopplerDefinitionType 

The Doppler definition used: optical, radio, or pseudo-relativistic (i.e., how is a redshift converted to a velocity); the most common is optical, except when the reference is LSR (usually radio)

Simple Type Information

Used By

Element stc:redshiftFrameType/stc:DopplerDefinition

Source 

<xs:simpleType name="dopplerDefinitionType">
  <xs:annotation>
    <xs:documentation>The Doppler definition used: optical, radio, or pseudo-relativistic (i.e., how is a redshift converted to a velocity); the most common is optical, except when the reference is LSR (usually radio)</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:string">
    <xs:enumeration value="OPTICAL"/>
    <xs:enumeration value="RADIO"/>
    <xs:enumeration value="RELATIVISTIC"/>
  </xs:restriction>
</xs:simpleType>