激光多周期测距方法

Multi-cycle laser range measurement

介绍了脉冲激光测距的工作原理 ,分析了脉冲激光测距存在的问题 ,在此基础上提出了激光多周期测距方法 ,即用接收到的回波信号驱动发射激光主波脉冲 ,从而形成振荡 ,通过测量多个周期内的时间积累后取平均而计算距离的一种方法。阐述该方法的基本工作原理 ,并就提高测量精度的方法和影响因素进行了分析。给出了实现该方法的系统组成框图 ,分析了提高其精度的关键技术 ,实验证明该方法是一种成本低、测量速度快。

The principle and problems of pulse laser finder are described. And a method of multi\|cycle laser range measurement is proposed. The oscillating is generated via the received echo driving main pulse of laser, and the range is gotten by calculating the averaged time of multi\|cycle of oscillating. The principle and the system structure of this method are given. And the key techniques for improving precision are also analyzed. Experiments show that this method has the advantages of low cost, high measurement speed and high precision, and suit for short distance measurement.