强激光与粒子束2011，Vol.23Issue(10)：2826-2830,5.DOI:10.3788/HPLPB20112310.2826
同轴电缆测量纳秒脉冲信号衰减的数字补偿
Numerical compensation for coaxial cable signal degradation
摘要
Abstract
A numerical compensation method is proposed to reduce nanosecond signal distortion caused by tens meters of cable. The method calibrates the target cable with a relatively short cable, performs Fourier transform on the output signals of the two cables, and then gets the original function of the long cable sensitivity and phase with frequency, by using the frequency characteristics of the signals. For this original function is full of noise, it needs to be the fitted with system model. And then the cable's output signal can be compensated after the experiment signal being measured in frequency domain. The experiment shows that this method can improve the bandwidth of cable significantly. The 100 m-long SYV-50-7-2 cable whose bandwidth is just 40 MHz is improved to 1 GHz by compensation.关键词
纳秒脉冲/同轴电缆/信号衰减/数字补偿/傅里叶变换/频响特性Key words
nanosecond pulse/ coaxial cable/ signal degradation/ numerical compensation/ Fourier transform/ frequency characteristics分类
信息技术与安全科学引用本文复制引用
付佳斌,卿燕玲,卫兵,杨礼兵,丰树平..同轴电缆测量纳秒脉冲信号衰减的数字补偿[J].强激光与粒子束,2011,23(10):2826-2830,5.基金项目
国家自然科学基金项目(10635050) （10635050）
