摘要
本文提出了一种适用于精密脉冲测距系统测定时间间隔的不完全同步计数测时法。初步试验表明，该方法能在简单的软硬件环境中提高测距分辨率数百倍，仪器测距精度可望达到若干厘米。文章还就系统软硬件设计的要点作了简要说明，并指出这种测时法也可用于重复周期不由系统本身决定的外部方波序列脉宽的相对测定。
The principle of a new time interval determination method, called untotally synchronouscounting method, is put forward in this paper,and in the meanwhile the key points in both hardware andsoftware design are presented as well. lt has been proved that the method could be used in precise pulseddistance meters t0 reach several centimeters resolution under an unsophisticated hardware and software en-vironment. The method should also apply to the accurate measurements of the width of the square waveswhich are independent to the measuring system.
