期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于PXI总线的实时测距采集系统 被引量:1
1
作者 杨佳敏 张丕状 《测试技术学报》 2019年第2期172-177,184,共7页
为了解决测距系统中有效信号完整性和测距精度的问题,设计了一种基于PXI(PCI extensions for Instrumentation)总线的实时相位测距采集系统,该系统采用PCI9052桥接芯片将PXI总线转化为局部总线, FPGA(Field-Programmable Gate Array)进... 为了解决测距系统中有效信号完整性和测距精度的问题,设计了一种基于PXI(PCI extensions for Instrumentation)总线的实时相位测距采集系统,该系统采用PCI9052桥接芯片将PXI总线转化为局部总线, FPGA(Field-Programmable Gate Array)进行实时信号处理和控制局部总线的工作时序与计算机进行通信.设计了相关鉴相法数字逻辑电路实现实时测距,同时采用一种触发技术保证了有效信号的完整性.通过实验证明:改进后的测距算法在该测距采集系统上的测距精度可以达到厘米级别,并且所提出的触发技术能够有效触发,保证了信号的完整性. 展开更多
关键词 PXI总线 测距采集系统 相关鉴相法 FPGA 触发技术
下载PDF
A Laser Ranging System Using Chaotic Light 被引量:1
2
作者 赵彤 王冰洁 +1 位作者 王安帮 王云才 《Journal of Measurement Science and Instrumentation》 CAS 2011年第4期398-401,共4页
A novel laser ranging system using chaotic laser as probe light source is designed and presented.The system is made up of five components:chaotic light source,transmitter,receiver,data acquisition unit and data proces... A novel laser ranging system using chaotic laser as probe light source is designed and presented.The system is made up of five components:chaotic light source,transmitter,receiver,data acquisition unit and data processing unit.Chaotic light is generated by an 808 nm,500 mW,single-mode laser diode with optical feedback cavity.Single target detection and multi-target detection are experimentally realized by correlating the chaotic reference light and the reflected or backscattered probe light.The performances,including the resolution of 18 cm within at least 130 m range and the sensitivity of-20 dB,are achieved and analyzed. 展开更多
关键词 laser ranging chaotic laser optical feedback laser diode
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部