Angular Accuracy Checks

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The Vantage reads the azimuth and zenith angles and the distance to the target for each reading in a measurement. A kinematic model corrects the readings. The model has parameters for the laser beams four degrees of freedom (two rotational and two translational), and two parameters for the gimbal (axis offset and axis non-squareness).

Verify the system accuracy using the Angular Accuracy Checks. For more information, see Angular Accuracy Checks.These checks compare a point reading taken in frontsight mode with one taken in backsight mode. The resulting deviation reports twice the worst-case error for a point measured at the range and position of the backsight reading.

Although the kinematic model is highly effective in minimizing measurement error, there are still many factors that are not accounted for by the model. Target quality, atmospheric induced errors, and thermal expansion are some of the errors not addressed by the model.