为满足雷达信号采集的要求,设计一个12 bit 100 MS/s的基于PCI总线的数据采集系统。该系统能够实现6GB数据的实时采集与存储。可编程逻辑器件控制数据的采集、存储与传输。PCI数据传输采用PCI主模式,传输速率达到60MB/s,采集信号的信噪...为满足雷达信号采集的要求,设计一个12 bit 100 MS/s的基于PCI总线的数据采集系统。该系统能够实现6GB数据的实时采集与存储。可编程逻辑器件控制数据的采集、存储与传输。PCI数据传输采用PCI主模式,传输速率达到60MB/s,采集信号的信噪比达到55dB(30MHz模拟信号)。展开更多
Absolute distance measurement is a fundamental technique in mobile and large-scale dimensional metrology.Dual-comb ranging is emerging as a powerful tool that exploits phase resolution and frequency accuracy for high-...Absolute distance measurement is a fundamental technique in mobile and large-scale dimensional metrology.Dual-comb ranging is emerging as a powerful tool that exploits phase resolution and frequency accuracy for high-precision and fast-rate distance measurement.Using two coherent frequency combs,dual-comb ranging allows time and phase response to be measured rapidly.It breaks through the limitations related to the responsive bandwidth,ambiguity range,and dynamic measurement characteristics of conventional ranging tools.This review introduces dual-comb ranging and summarizes the key techniques for realizing this ranging tool.As optical frequency comb technology progresses,dualcomb ranging shows promise for various professional applications.展开更多
基金the National Natural Science Foundation of China(61575105,61611140125)Beijing Natural Science Foundation(3182011)Shenzhen Fundamental Research Funding(JCYJ20170412171535171).
文摘Absolute distance measurement is a fundamental technique in mobile and large-scale dimensional metrology.Dual-comb ranging is emerging as a powerful tool that exploits phase resolution and frequency accuracy for high-precision and fast-rate distance measurement.Using two coherent frequency combs,dual-comb ranging allows time and phase response to be measured rapidly.It breaks through the limitations related to the responsive bandwidth,ambiguity range,and dynamic measurement characteristics of conventional ranging tools.This review introduces dual-comb ranging and summarizes the key techniques for realizing this ranging tool.As optical frequency comb technology progresses,dualcomb ranging shows promise for various professional applications.
