强激光与粒子束Issue(10)：1-6,6.DOI:10.11884/HPLPB201426.101016
光学线性调频步进信号合成与高分辨测距演示
Synthetic optical frequency-stepped chirp signal and its high resolution ranging demonstration
摘要
Abstract
Synthesizing wideband optical frequency-stepped chirp signal (FSCS)with independent lasers for high resolution ranging is suggested.Based on the theory of FSCS signal ranging,both the influence of laser parameters on synthesizing FSCS signal and their error tolerances are investigated.Numerical results show that among the three laser parameters,jitters in starting frequency and starting time are the main factors causing range resolution deterioration.Meanwhile,a high resolution ranging ex-periment with optical FSCS signal is demonstrated,where the FSCS signal is simulated by optical chopping a linear wavelength sweeping laser at the center wavelength of 1550 nm and line width of 150 kHz.Both the theoretical analysis and the experimental results show that it is workable to form synthetic FSCS signal with several linear-chirped lasers for high resolution ranging.关键词
激光雷达/线性调频步进信号/高分辨力测距/误差容限Key words
ladar/frequency-stepped chirp signal/high resolution ranging/error tolerance分类
信息技术与安全科学引用本文复制引用
苏园园,吴谨,赵志龙,梁娜,段洪成..光学线性调频步进信号合成与高分辨测距演示[J].强激光与粒子束,2014,(10):1-6,6.基金项目
国家自然科学基金项目(61178071) （61178071）
