摘要
The Cramer–Rao lower bound on range error is modeled for pseudo-random ranging systems using Geiger-mode avalanche photodiodes. The theoretical results are shown to agree with the Monte Carlo simulation, satisfying boundary evaluations. Experimental tests prove that range errors caused by the fluctuation of the number of photon counts in the laser echo pulse leads to the range drift of the time point spread function. The function relationship between the range error and the photon counting ratio is determined by using numerical fitting.Range errors due to a different echo energy is calibrated so that the corrected range root mean square error is improved to 1 cm.
The Cramer–Rao lower bound on range error is modeled for pseudo-random ranging systems using Geiger-mode avalanche photodiodes. The theoretical results are shown to agree with the Monte Carlo simulation, satisfying boundary evaluations. Experimental tests prove that range errors caused by the fluctuation of the number of photon counts in the laser echo pulse leads to the range drift of the time point spread function. The function relationship between the range error and the photon counting ratio is determined by using numerical fitting.Range errors due to a different echo energy is calibrated so that the corrected range root mean square error is improved to 1 cm.
作者
Shanshan Shen
Qian Chen
Weiji He
Vuqiang Wang
沈姗姗;陈钱;何伟基;王宇强(Nanjing University of Science and Technology, Jiangsu Key Laboratory of Spectral Imaging Intelligence Sense, Nanjing 210094, China College of Zi Jin of Nanjing University of Science and Technology, Nanjing 210046, China The people＇s Liberation Army East Sea Fleet 92713 forces)
基金
supported by the National Natural Science Foundation of China(Nos.61101196 and 61271332)
the Natural Science Research Foundation of Jiangsu Province(No.168JB510015)
