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1、228S,z:.0 M .:.+,j.fHWE,)HWWd J .C0/, 2008, (15):127-129.(Liu Chuanjun, RenQiongying.The flight time method based on the order of the nanosecond time interval measurement system .ModernElectronicTechnology ,2008, (15):127-129) 7 ,Y.;ZE#;?Z J .S/, 2008, (30):387-388.(Liu Kun , Chen Fang.Laser ranging
2、 method and the de-velopment of lasers.Scienceand Technology Information, 2008, (30):387-388)8 f,UFD,=3,.;NiVq J .;0, 2008, 20(7):1063-1066.(Zhang Baodong, Qin Shiqiao,Hu Chunsheng, et al.Point source transmittance of laser range finder.HighPower Laser and ParticleBeams, 2008, 20(7):1063-1066)Pulsed
3、 laser ranging time-interval measuring techniqueWang Hongzhe, Xin Desheng, Zhang Jianjia, Zhang Hongchen, Pei Lei(NationalKey Laboratory on High Power Semiconductor Lasers,ChangchunUniversityof Scienceand Technology, Changchun 130022, China)Abstract:In pulsed laser ranging system, the time interval
4、measurement to improve the accuracy of the interpolation methodfor time interval measurement.This article analyzes the traditional digital counting method based on the principle and error, focu-sing on the interpolation.The objects of measurement are the conventional digital counting pulse under tes
5、t and the next risingedge of a quantitative clock time interval between pulse rising edge.By capacitive discharge technology, the time interval is loadedto a time extension module(usually a high-precision capacitance)to achieve time amplification.Measurement of the enlarged timecan improve the precision of time measurement.Using this method, the time interval measurement accuracy is up to 100 ps, cor-responding to 1.5 cm range accuracy.Key words:pulse laser ranging ;time-interval measurement;simulation interpolation;precision1754;022
