AUX: Auxiliary Parameters

This record declares (creates the existence of) an auxiliary parameter group.

In addition to station coordinates, GeoLab can solve for non-coordinate parameters such as distance scale for a group of distance measurements, or a constant azimuth rotation for a group of azimuth observations.
For example, if you made a number of electronic distance measurements without calibrating your instruments, the distance measurements may be in error by an unknown scale factor; in this case, you would assign a scale parameter (auxiliary parameter) to this group of measurements and GeoLab would determine the value of that scale bias in the adjustment computation.

Each group of auxiliary parameters can contain from 1 to 7 parameters of the following types, with the specific parameter types that may be assigned to each observation type in parentheses:
CONS: Additive constant for distance (DIST, EDIS);
SCAL: Scale change, 3D (DIST, EDIS, 2DC, 2DD, 3DC, 3DD);
SCA2: Scale change in the horizontal plane, 2D (2DC, 2DD, 3DC, 3DD);
ORAZ: Rotation around the local vertical - azimuth rotation (AZIM, GAZI, 2DC, 2DD, 3DC, 3DD);
ROTX: Rotation around the CT X-axis (AZIM, GAZI, 2DC, 2DD, 3DC, 3DD);
ROTY: Rotation around the CT Y-axis (AZIM, GAZI, 2DC, 2DD, 3DC, 3DD);
ROTZ: Rotation around the CT Z-axis (AZIM, GAZI, 2DC, 2DD, 3DC, 3DD);
TRAX: Translation along the CT X-axis (2DC, 3DC);
TRAY: Translation along the CT Y-axis (2DC, 3DC);
TRAZ: Translation along the CT Z-axis (2DC, 3DC);
TRAE: Translation in the east/west direction (2DC, 3DC);
TRAN: Translation in the north/south direction (2DC, 3DC);

Note that the first blank parameter type field ends the list of parameter types for the group.

This record has two possible formats, a long parameter name format, and a short parameter name format. If column 10 contains an asterisk (*) the long name format is expected, otherwise the short name format is expected.

The short parameter name format is as follows:

Columns 002-005: AUX
Columns 007-009: Observation type (AZI, GAZ, DIS, EDI, 3DC, 3DD, 2DC, or 2DD)
Columns 010-010: (blank)
Columns 011-022: Unique name of the auxiliary parameter group
Columns 024-027: Type for 1st auxiliary parameter in group
Columns 029-032: Type for 2nd auxiliary parameter in group (if any)
Columns 034-037: Type for 3rd auxiliary parameter in group (if any)
Columns 039-042: Type for 4th auxiliary parameter in group (if any)
Columns 044-047: Type for 5th auxiliary parameter in group (if any)
Columns 049-052: Type for 6th auxiliary parameter in group (if any)
Columns 054-057: Type for 7th auxiliary parameter in group (if any)

The long parameter name format is as follows:

Columns 002-005: AUX
Columns 007-009: Observation type (AZI, GAZ, DIS, EDI, 3DC, 3DD, 2DC, or 2DD)
Columns 010-010: * (asterisk)
Columns 011-041: Unique name of the auxiliary parameter group
Columns 043-046: Type for 1st auxiliary parameter in group
Columns 048-051: Type for 2nd auxiliary parameter in group (if any)
Columns 053-056: Type for 3rd auxiliary parameter in group (if any)
Columns 058-061: Type for 4th auxiliary parameter in group (if any)
Columns 063-066:Type for 5th auxiliary parameter in group (if any)
Columns 068-071:Type for 6th auxiliary parameter in group (if any)
Columns 073-076: Type for 7th auxiliary parameter in group (if any)