摘要
利用1 GHz超高速A/D转换单元和现场可编程逻辑门阵列高速处理单元,实现了一种对快反应随机事件转换得到的快逻辑窄脉冲序列进行在线检测的系统。设计了PeakTDC滞回峰值检测算法以求取脉冲的峰值位置,并以峰值位置标定序列中的脉冲时间,进而形成脉冲序列的时间编码及峰值幅度。用实际生成的脉冲序列对系统进行了验证测试,脉冲检测的时间间隔误差为1 ns,峰值幅度误差为2个量化单位,脉冲对的分辨时间为10 ns。算法理论和实验结果表明,系统可以获得在有限长时间仓轴上的随机脉冲序列的ns级时间数字转换,同时可以获得脉冲的峰值。
To detect the fast logic pulse sequence related to random events, an online detecting system has been realized based on a 1 GHz ultra-high-speed A/D converter and a high-speed FPAG processor. PeakTDC algorithm was designed to seek the peak position of the pulses and therefore demarcate the corresponding pulse time, and then to form the time code and peak amplitude for the pulse sequence. The practical test results of the system show a time interval error of 1 ns, a peak amplitude error of 2 quantization units, and a paired pulse resolution of 10 ns. The algorithm theory and experimental results demonstrate that the system can achieve ns-level time-digital-conversion for random pulse sequences on a limited long time-bin, and simultaneously obtain the peak value of pulses.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2009年第7期1101-1105,共5页
High Power Laser and Particle Beams
基金
重庆市科委自然科学基金项目(CSTC2007BB3174)
关键词
随机脉冲序列
时间数字转换
时间检测
峰值检测
快逻辑
random pulse sequence
time-digital-conversion
time detection
peak detection
fast logic
