摘要
为了降低对脉冲串激光测距仪器的采样硬件的要求.应用有限新息率理论(FRI),对模拟脉冲串信号以略高于其新息率的速率进行采样,并应用sinc采样核与谱分析方法对其进行重构.仿真实验表明,本方法能够以远低于脉冲串信号奈奎斯特采样频率对其进行有效采样和重构.这为保证采样精度的同时,降低激光测距脉冲串采样硬件要求提供一种新思路.
In order to reduce the requirement of digital sampling hardware for pulsed laser ranging instrument,this paper presents a method by using the theory of finite rate of innovation,which can sample the simulated pulse trains signals with a rate of slightly higher than their rate of innovation,and reconstruct them by using sinc sampling kernel and spectrum analysis method.The simulation results showthat the method can effectively sample and reconstruct the pulse trains signals with a rate far belowtheir Nyquist sampling frequency.This paper provides a newway to reduce the requirement of laser ranging with the high precision of sampling accuracy.
出处
《辽宁大学学报（自然科学版）》
CAS
2017年第4期315-319,共5页
Journal of Liaoning University：Natural Sciences Edition
关键词
激光测距
脉冲串信号
有限新息率
sinc采样核
谱分析方法
laser ranging
pulse trains signals
finite rate of innovation
sinc sampling kernel
spectrum analysis method
