脉冲激光测距中时间间隔的新的测量方法  

New Method for Measuring Time-of-Flight in Pulse Laser Ranging

作　　者：虞静[1] 唐丹[1] 江虹[1] 毛久兵[1] 

机构地区：[1]西南科技大学信息工程学院,四川绵阳621000

出　　处：《红外》2009年第11期17-20,共4页Infrared

基　　金：国家863基金资助项目(机载激光三维地貌测绘技术)

摘　　要：脉冲激光测距在军事工业领域应用广泛,具有平均功率低、重复频率高和对光源相干性要求低等优点。通过提高脉冲激光测距中时间间隔的测量精度,可直接提高脉冲激光测距的精度。为了达到ps级测量精度,我们用单片机对时间测量芯片进行了控制,从而使其不但能对发射脉冲信号和返回脉冲信号延迟进行测量,而且还能对测量结果进行自动校准。与脉冲激光测距技术中用于测量时间间隔的传统方法相对比,这种方法简化了器件设计,提高了测量速度。Because of the advantages of low average power, high recurrence frequency and low coherence requirement for light sources, pulse laser ranging technology has wide applications in military industry. The precision of the pulse laser ranging technology can be improved directly by improving the time-gap measurement accuracy in pulse laser ranging. In order to reach the ps-level measurement accuracy, a single chip microcomputer is used to control a time measurement chip. So, the time measurement chip not only can measure the time delay between the emitted pulse signal and the returned pulse signal, but also can correct the measurement result automatically. Compared with the traditional methods for measuring the time-gap in pulse laser ranging, this method can simplify the design of a device and improve its measurement speed.

关 键 词：激光测距 时间间隔 高精度 MPS430 

分 类 号：TN247[电子电信—物理电子学]