基于标准光纤的全站仪测距室内检定

Indoor Calibration of Ranging by Total Station Based on Standard Optical Fiber

本文提出了一种把光纤引入室内,代替野外基线来检定全站仪测距的方法。此方法通过光电转换提取全站仪测距光中的调制电信号,经外加调制器调制到外加激光上,并经过光纤传输返回到全站仪接收管,从而实现全站仪对光纤的测距。对提出的方法进行了实验验证,结果表明:此方法可实现用光纤在室内检定代替野外基线来检定全站仪测距,同时克服了大孔径测距光到光纤耦合困难的难题。

This paper presents a method to introduce optical fiber into indoor for replacing the outdoor baseline so as to calibrate total station ranging. In this method, the modulation signal is extracted from the total station through photo-electric conversion, then sent to the external laser after modulated by external modulator. After transmission via optical fiber, the signal is returned to the total station＇s receiving tube, and the total station achieves the ranging function by optical fiber. Experiment results show that this method can realize the calibration of total station ranging, which uses optical fiber indoor calibration instead of outdoor baseline, and can overcome the difficulty in coupling a large aperture ranging light from the total station to optical fiber.