太赫兹科学与电子信息学报, 2018, 16 (3): 558, 网络出版: 2018-07-24
Analysis and optimization of distance measurement in MATLAB/SIMULINK model
Analysis and optimization of distance measurement in MATLAB/SIMULINK model
摘要
Abstract
Based on the basic principle of Time-Of-Flight cameras, a novel MATLAB/ SIMULINK model is proposed to measure phase delay of a modulated light signal which represents the distance from camera to object. Subsequently, by discussing influence factors of phase measurement, it isfound that the integration time, thesampling time, and the aliasing effect have important effect on improving the accuracy of phase measurement. Interestingly, by analyzing different integration time and sampling time, it is found that the best integration time and sampling time are 0.05 msand 10ns, respectively. In this case(i.e.,in absence of the aliasing effect), the variation range of the distance error is between 1 mm and 11 mm in the interval of one period. Especially, under the consideration of the aliasing effect, the average value of distance error is half of that in absence of the aliasing effect. This improves the accuracy of the distance measurement greatly.
WANG Yin, JIN Xiangliang. Analysis and optimization of distance measurement in MATLAB/SIMULINK model[J]. 太赫兹科学与电子信息学报, 2018, 16(3): 558. WANG Yin, JIN Xiangliang. Analysis and optimization of distance measurement in MATLAB/SIMULINK model[J]. Journal of terahertz science and electronic information technology, 2018, 16(3): 558.