%0 Journal Article
%T Study of Timing Discriminator for Pulsed Laser Rangefinder<br>脉冲激光测距时刻鉴别方法的研究
%A JI Rong-yi
%A ZHAO Chang-ming
%A REN Xue-cheng
%A <br>纪荣祎
%A 赵长明
%A 任学成
%J 红外
%D 2010
%I 
%X A dual threshold leading edge timing discrimination method for pulsed laser ranging is presented. The timing error caused by the amplitude variation of the received pulse is analyzed. The dual threshold leading edge timing discrimination method is used to generate a stop signal for flight time measurement and a time point signal related to the pulse amplitude. A high-precision interval measuring chip is used to measure the actual flight time of the laser pulse and the time interval related to the pulse amplitude and is also used to compensate the drift error caused by the timing discriminator. As a result, the ranging precision of $\pm$3cm is obtained. Compared with other timing discrimination methods, this method has the features of no AGC unit, simple circuit structure and wide dynamic range. Moreover, it can still compensate the drift error even when the pulse amplitude is saturated.
%K laser rangefinding
%K timing discrimination
%K time interval measurement
%K drift error<br>脉冲测距
%K 时刻鉴别
%K 时间间隔测量
%K 漂移误差
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=3723000AE493FCE650601982177048B1&aid=7E7B520ADD9A420E5CE0A6E02BB47C40&yid=140ECF96957D60B2&vid=4AD960B5AD2D111A&iid=708DD6B15D2464E8&sid=339D79302DF62549&eid=42425781F0B1C26E&journal_id=1672-8785&journal_name=红外&referenced_num=1&reference_num=0