Abstract
This paper takes Stonex X300 3D laser scanners as a design scheme, tests ranging nominal and ranging precision of instrument and compares between calculating solution of Stonex X300 3D laser scanners and the measured distance of Leica TS30 total station. Experiment result shows ranging precision of 3D laser scanners is given on the basis of certain distances while ranging nominal is given on the basis of certain experiment conditions. In the process of collecting data in field surveying, it cannot completely reach its calibration value due to conditional limitation and ranging error in certain distance easily reaches nominal value. However, in terms of total station-scaled 3D laser scanners, it cannot reach too high differentiating ability. The farther the distance, the more difficult the discovery of target point. Ranging precision testing method in this paper has better reliability to be implemented and also has practical value for precision research in 3D terrain laser scanners.
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