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!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!
! SDDL Name:	WGDEAD_ZONES.SDDL
!
! Purpose:      This SDDL file defines the wgdead_zones relation.
!
! Modification History:
!
!   Date       PR      Who                       Reason
! --------   -------   ---   -------------------------------------------------
! 11/15/94   27329     SSS   Original implementation
! 05/13/96   31421     MRB   Wildcard fields for related_fields
! 05/08/98   36870     MRB   Add C output
! 10/01/01   44572     sss   Added index
!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!

LANGUAGE  C, FORTRAN, SQL

INCLUDE  ZSPSS_USER_TYPES.SDDL

RECORD  DEADZO_TYPE

    DESCRIPTION       "This relation contains a table of dead zones for
                       each TDRS satellite and each type of TDRS service.  
                       The dead zones are time periods for which the 
                       specified TDRS service is unavailable.   This relation 
                       is queried during orbit file creation and orbit file 
                       updating (ORBFILE/CREATE, and ORBFILE/UPDATE).  The 
                       time periods for any dead zones intersecting the orbit 
                       file time period are copied into the HST orbit file."


    FIELD  tdrs_id
        TYPE            C1
        DESCRIPTION     "This is the geographic location of the TDRS space-
                         craft.  'E' indicates the East satellite.  'W'
                         indicates the West satellite."
        DISCRETE        "E", "W"
    END_FIELD


    FIELD  st_maret
        TYPE SOGS_INT_TIME_TYPE
        DESCRIPTION     "This is the start time of a dead zone for the 
                         Multiple Access Return (MAR) service."
    END_FIELD


    FIELD  end_maret
        TYPE SOGS_INT_TIME_TYPE
        DESCRIPTION     "This is the end time of a dead zone for the 
                         Multiple Access Return (MAR) service."
    END_FIELD


    FIELD  st_mafwd
        TYPE SOGS_INT_TIME_TYPE
        DESCRIPTION     "This is the start time of a dead zone for the 
                         Multiple Access Forward (MAF) service."
    END_FIELD


    FIELD  end_mafwd
        TYPE SOGS_INT_TIME_TYPE
        DESCRIPTION     "This is the end time of a dead zone for the 
                         Multiple Access Forward (MAF) service."
    END_FIELD


    FIELD  st_ssaret
        TYPE SOGS_INT_TIME_TYPE
        DESCRIPTION     "This is the start time of a dead zone for the 
                         S-Band Single Access Return (SSAR) service."
    END_FIELD


    FIELD  end_ssaret
        TYPE SOGS_INT_TIME_TYPE
        DESCRIPTION     "This is the end time of a dead zone for the 
                         S-Band Single Access Return (SSAR) service."
    END_FIELD


    FIELD  st_ssafwd
        TYPE SOGS_INT_TIME_TYPE
        DESCRIPTION     "This is the start time of a dead zone for the 
                         S-Band Single Access Forward (SSAF) service."
    END_FIELD


    FIELD  end_ssafwd
        TYPE SOGS_INT_TIME_TYPE
        DESCRIPTION     "This is the end time of a dead zone for the 
                         S-Band Single Access Forward (SSAF) service."
    END_FIELD

END_RECORD


RELATION  wgdead_zones
    TYPE             DEADZO_TYPE
    DESCRIPTION      "TDRS Dead Zones Relation"
    SUBSYSTEM_USING  "SPSS"
    RELATED_FIELDS  "TDRS_USAGE.*" "TDRSS_TABLE.*" "WTDRS_LINK.*"

    INDEX  wgdead_zones_1
        TYPE         clustered
        FIELDS       tdrs_id
    END_INDEX
END_RELATION


INSTANCE  wgdead_zones
    GLOBAL
    TYPE        DEADZO_TYPE
END_INSTANCE

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