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《DEVELOPMENTS IN SURVEYING AND MAPPING》 1998-04
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A Simple Method to Improve Time Interval Measurement Resolution in Precise Pulsed Distance Meter

Xu Chengtian; Yan Shaoyong and Qiu Feng(Chinese Academy of Surveying and Mapping)  
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.
【CateGory Index】: P204
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