Range ATR/LOCK
ATR accuracy with the GPR1 prism
ATR angle accuracy Hz, V (std. dev. ISO 17123-3): 1 " (0.3 mgon)
Base Positioning accuracy (std.dev.): ± 1 mm
System accuracy with ATR
• The accuracy with which the position of a prism can be determined with Automatic Target Recognition (ATR) depends on several factors such as internal ATR accuracy, instrument angle accuracy, prism type, selected EDM measuring program and the external measuring conditions. The ATR has a basic standard deviation level of ± 1 mm. Above a certain distance, the instrument angle accuracy predominates and takes over the standard deviation of the ATR.
• The following graph shows the ATR standard deviation based on two different prism types, distances and instrument accuracies.
Maximum speed in lock mode
Maximum tangential speed: 5 m/s at 20 m; 25 m/s at 100 m
Maximum radial speed with : 5 m/s
Searching
Typical search time in field of view: 1.5 s
Field of view: 1°25’/1.55 gon
Definable search windows: Yes
Characteristics
Principle: Digital image processing
Type: Infrared laser