This program will create constraint equations for a series of stations.
The user can enter the stations from the terminal or from a file of Ghost coordinate records.
The output can be either to a file and/or to the screen.
The user can enter standard deviations from the terminal or choose the default values of 0.0001 in latitude (m) 0.0001 meters in longitude and 100 meters in ellipsoid height.
The user can either constrain the correction to the latitude, longitude and height (partially reduced normel) or can constrain the latitude, longitude and height value within the input standard deviation (position equation). The first case will always constrain the correction to a coordinate to zero even although the coordinate itself may change from pass to pass. The second case will always constrain the coordinate to within the standard deviation (all things being equal) regardless of the changing coordinate value from pass to pass.
Example
cd / <== Go to user root directory
cd ghost/data/sudbury <== Go to data directory
CNSTRT <== Execute procedure
Sample run
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Standard deviation for Latitude = 0.10000000E-03 <== Default Values
Longitude = 0.10000000E-03
Elevation = 0.10000000E+03
Accept these values [CR] <== User is requested to select
Choose new values [C] <== Change Standard deviations
File of coordinates [F] <== Enter a file name of Ghost coordinates
File for output [O] <== Enter a file name for the output
Exit from program [Q] <== Finished with program
These constraints may be used to <== User has selected values
Constrain a correction to zero [Z] <== Constraint equations
Constrain a coordinate value [CR] <== Position equations
Enter a station number [CR] Exit
95001
Enter a latitude,longitude,elevation dd.mmss
45.0,45.0,10.0
Enter a station number [CR] Exit <== Program will loop until a C/R
The program has now produced the file and returns to wait for
further instructions
Standard deviation for Latitude = 0.10000000E-03
Longitude = 0.10000000E-03
Elevation = 0.10000000E+03
Accept these values [CR]
Choose new values [C]
File of coordinates [F]
File for output [O]
Exit from program [Q]
Q <== User has finished with the program
End of Cnsrt