A Study On Range Accuracy Of Supper Resolution Range Gated Laser Radar

Because of its high efficiency backscatter inhibition,high range accuracy and the capability to obtain the 3D distant images,range gated ladar becomes more and more popular nowadays.The supper-resolution range gated ladar is based on the original ladar system,but there are some difference which make the imaging frame rate and range accuracy greatly improved.This paper mainly studied the super-resolution range gating system, range accuracy.According to the range equation of the constant plus range gated system,we obtained its range accuracy equations.Then we proposed an improved system in which we used linear plus instead of constant plus and its range accuracy was also studied.Firstly,this paper introduced the research background, home and abroad through range gated laser radar research status, cited a number of foreign representative range gating systems and discussed the range gated radar imaging of several key technologies.Secondly,we discussed the working principle and 3D image synthesis algorithm of centroid and super-resolution ladar system.We deduced and compared their range accuracy,and evetually found that super-resolution range gated system are greatly improved not only in the imaging frame rate but also in accuracy.Finally, based on the range equations of the existing constant gain super-resolution range gating system,this paper derived its range accuracy equations.Furthermore, we proposed the linear gain of ICCD gating system.We obtained the 3D image synthesis algorithm and the range accuracy equations of short-distance and long-distance goals.At last a simulation of the original and improved system was made by Matlab.The results show that the selected linear gain of gate greatly improved the system range accuracy, and we provide a new way to improve range accuracy.