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2. 发明申请

US20090284822A1 PHASE CALIBRATION METHOD AND DEVICE USING THE SAME AND DISTANCE MEASURING EQUIPMENT 审中-公开
标题翻译：相位校准方法和使用它的设备和距离测量设备
公开(公告)号：US20090284822A1
公开(公告)日：2009-11-19
申请号：US12189314
申请日：2008-08-11
申请人： Xin DU , Xin Wu , Zhi Chou
发明人： Xin DU , Xin Wu , Zhi Chou
IPC分类号： G02F1/01
CPC分类号： G01S7/497 , G01S17/36
摘要： The present invention provides a phase calibration method, device, and equipment. The method comprises the steps of: a first light beam emitter generating a first light-wave into a target object, the first light-wave being reflected at the target object and flying back onto a receiver, wherein the first light-wave, as an external beam path signal, is modulated by a first high-frequency oscillation signal; a second light beam emitter emitting a second light-wave into the receiver, wherein the second light-wave, as an internal beam path signal for fundamental phase reference, is modulated by a second high-frequency oscillation signal; and the receiver performing a phase comparison between received first light-wave and sequentially received second light-wave therein and exporting a measurement signal with fundamental reference eliminated. The present method achieves phase compensation and calibration, thereby reducing the influence of environmental elements, increasing measuring precision, and thus reducing system cost.
摘要翻译：本发明提供一种相位校准方法，装置和设备。该方法包括以下步骤：第一光束发射器产生第一光波到目标物体中，第一光波在目标物体处反射并飞回到接收器上，其中第一光波作为外部光束路径信号由第一高频振荡信号调制; 将第二光束发射到接收器中的第二光束发射器，其中作为用于基相位参考的内部光束路径信号的第二光波被第二高频振荡信号调制; 并且接收机在接收的第一光波和顺序接收的第二光波之间进行相位比较，并输出基本参考的测量信号。本方法实现了相位补偿和校准，从而降低了环境因素的影响，提高了测量精度，从而降低了系统成本。

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