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TerraScan User Guide

Navigation: Tool Reference > Manage Trajectories > Trajectory pulldown menu

Set accuracy

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Set accuracy

Set accuracy command lets you define accuracy estimates for trajectory positions. The selected estimate value is applied to all positions of one or more selected trajectories. The command can be used to set reasonable accuracy estimates for trajectories, if no system-based accuracy files are available. Alternatively, a minimum accuracy estimate value can be enforced. The accuracy estimates are treated like RMS values. A list of values is provided in the command’s dialog from which you can select the best estimate.

If accuracy estimates are available from the post-processing software, the files can be imported by using the Import accuracy files command.

The accuracy estimate values are stored in the binary trajectory files. TerraScan stores only four values for each trajectory position: x/y, z, heading, roll/pitch.

The information from the accuracy files is used for strip matching computations in TerraMatch and for drawing trajectories into the CAD file.

To set accuracy values for trajectory positions:

1. Select one or more trajectories in the list of the Trajectories window.

2. Select Set accuracy command from the Trajectory pulldown menu.

This opens the Set Trajectory Accuracy dialog:

set_trajectory_accuracy

3. Switch on accuracy estimates that you want to define and select a value from the list.

4. Click OK.

This assigns the values to the trajectory positions and saves the .TRJ file(s). An information dialog shows the number of effected trajectories.

SETTING

EFFECT

Mode

Determines whether a fixed accuracy estimate is set or a minimum value is enforced:

Assign accuracy - sets a fixed accuracy estimate value for all trajectory positions.

Enforce minimum - sets an accuracy estimate value for a trajectory position if the original value is smaller than the new given value.

Accuracy xy

If on, accuracy estimates for xy positions are set.

Accuracy z

If on, accuracy estimates for z positions are set.

Accuracy h

If on, accuracy estimates for heading attitude are set.

Accuracy rp

If on, accuracy estimates for roll and pitch attitude are set.

TerraScan User Guide   01.01.2024   © 2024 Terrasolid Ltd