一种抑制脉冲激光测距机低温虚警的方法  

Method to repress false alarm rate of laser rangefinder at low temperature

作　　者：张文海[1] 李松山[1] 王岳[1] 

机构地区：[1]华北光电技术研究所,北京100015

出　　处：《激光与红外》2012年第6期626-628,共3页Laser & Infrared

摘　　要：阐述了一种实用型抑制脉冲激光测距机低温虚警的方法,重点用于解决脉冲激光测距机在研制过程中,常温和高温都能够满足虚警率指标,而低温时虚警率工作超标的问题。通过产生虚警的原因分析,在雪崩二极管噪声闭环偏置控制回路中,增加了门限控制及噪声检测电路,通过单片机对闭环噪声控制回路的参数进行实时调节,使低温虚警得到有效抑制,能够满足系统指标要求。In practical application,the laser rangefinder often works well at normal temperature but its false alarm rate may not meet the requirement at low temperature. Aiming at solving the problem, the cause resulting in high false a- larm rate is discussed, circuits of noise detecting and threshold adjusting are designed. A monolithic microller is used in the feedback control loop. By adjusting the parameters of the control loop,the false alarm rate at temperature is de- pressed and it satisfies the requirement in practical application.

关 键 词：脉冲激光测距 有效抑制 低温虚警 

分 类 号：P225.2[天文地球—大地测量学与测量工程]