COORDINATE DEFINITION RECORDS

These records (codes 4,5,6,7,14,24) are used to enter coordinate values for a station.

Note: Only the first value encountered is saved with the exception of the junction definition where a code 6 will overwrite a code 4 or 5 and a code 5 will overwrite a code 4

Sample records

Establish approximate Geographic coordinates (code 4,5,6,14)

Sample records
      COLUMN   CONTENT

         1     Blank
        2-3    Code used to identify the type of data
                        4 :  terrestrial or spatial (non junction)
                        5 :  terrestrial or spatial (junction)
                        6 :  spatial (junction)
                       14 :  terrestrial (non junction)- stores a 
                             constraint equation in INTCOBS
        4-6     Type used to identify a class of observations (Examples)
                        DOP     : doppler
                        F       : doppler data adjusted in framework
                        S       : doppler data adjusted as secondary
                         P      : doppler data computed on precise ephemeris
                         B      : doppler data computed on broadcast ephemeris
                          F     : doppler station coincident with terrestrial
                                  framework
                          S     : doppler station coincident with terrestrial
                                  secondary
                                : doppler station not coincident with
                                  terrestrial survey
                        GPS     : global positioning system data
                        LBI     : long baseline interferometry data
                  
                Any 3 alpha-numerical characters can be used to
                identify a class of observation

        7-15    Station number used to associate the data on
                this record with data on other records for the same
                coordinates
        16-30   Station name
           31   Blank
           32   Station classification (Order)
        33-38   Associated network
           39   Blank
           40   Latitude north-south indicator (blank, N, + or S, -)
        41-42   Latitude degrees
        43-45   Latitude minutes
        46-54   Latitude seconds  (decimal required)
           55   Longitude east-west indicator (blank, W, + or E, -)
        56-58   Longitude degrees
        59-61   Longitude minutes 
        62-70   Longitude seconds (decimal required)
        71-79   Orthometric height (decimal required)
           80   Orthometric height indicator (blank for astronomic
                record)
                        A : from framework file
                        F : height expressed in feet
                        H : H dop determination
                        I : interpolated from contours
                        L : local computation, source unknown
                        M : height expressed in meters
                        N : NGDB (National Geodetic Data Base)
                        P : provincial
                        S : scale
                        T : trigonometric
                        blank : not evaluated
        Note:   except for "F", none of these indicators is used by
        GHOST during the adjustment and the only valid indicators
        are the ones listed above along with the digits 0 to 9.

[Menu]


Establish approximate Cartesian coordinates (code 24)

     COLUMN   CONTENT

          1   Blank
        2-3   Code 24 :  terrestrial or spatial (non junction)
        4-6   Type used to identify a class of observations (Examples)
                        DOP     : doppler
                        GPS     : global positioning system data
                        LBI     : long baseline interferometry data
                       
                Any 3 alpha-numerical characters can be used to
                identify a class of observation
         7-15   Station number used to associate the data on
                this record with data on other records for the same
                coordinates
        16-30   Station name
           31   Blank
           32   Station classification (Order)
        36-50   X coordinate (decimal required) 
        51-65   Y coordinate (decimal required)  
        66-80   Z coordinate (decimal required)

[Menu]


Establish observed astronomic coordinates (code 7)

Sample records
      COLUMN    CONTENT

         1-2    Blank
           3    Code  7 :  astronomic data
         4-6    Type  AST     : astronomic    (Examples)
                      xxx     : year of observation (astronomic data)                      
        7-15    Station number used to associate the data on
                this record with data on other records for the same
                coordinates
       16-30    Station name
          31    Blank
          32    Station classification (Order)
       33-38    Associated network
          39    Blank
          40    Latitude north-south indicator (blank, N, + or S, -)
       41-42    Latitude degrees
       43-45    Latitude minutes
       46-54    Latitude seconds  (decimal required)
          55    Longitude east-west indicator (blank, W, + or E, -)
       56-58    Longitude degrees
       59-61    Longitude minutes
       62-70    Longitude seconds  (decimal required)

[Menu]


Revised 20 Dec 98 by Mike Craymer