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receiving optics
相关语句
  相似匹配句对
     Study of Photoelectric Receiving and Computer Display in Optics Experiment
     光学实验中光电接收与微机显示研究
短句来源
     Optics Letters
     光学快报
短句来源
     optics-teaching.
     optics-teaching.
     Receiving Systems
     接收系统
短句来源
     signal receiving procedure.
     其中包括:滤波、混频、解调、采样等一系列信号接收程序。
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  receiving optics
In addition, the analysis in Sect.?3 reveals that the reduction of the data rate from astigmatism due to off-axis alignment of the probe depends on the focal length of the receiving optics.
      
We also follow the lidar-signal changes depending on the field-of-view of the receiving optics.
      
The receiving optics consisted of a 0.27 rad plate collimator, a flat graphite monochromator, and a proportional counter detector.
      
The optical head contains the light source, miniature optics, receiving optics and detection system.
      
The field of view of the receiving optics was also measured by transmitting light from the receiving fiber to the probe volume.
      
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A new three--dimensional laser Doppler velocimeter (3D LDV) by only using frequency shift separation method has been developed. Simultaneous measurementS of three velocity components are realized by a single color He-Ne laser and one photodetector with simple transmitting and receiving optics. The signals corresPOnding to different velocity components are distinguished by three different optical frequency shifts introduced by three Bragg cells, and separated by band--pass filters. A novel and simple fourbeam...

A new three--dimensional laser Doppler velocimeter (3D LDV) by only using frequency shift separation method has been developed. Simultaneous measurementS of three velocity components are realized by a single color He-Ne laser and one photodetector with simple transmitting and receiving optics. The signals corresPOnding to different velocity components are distinguished by three different optical frequency shifts introduced by three Bragg cells, and separated by band--pass filters. A novel and simple fourbeam transmitting optics which contains three sets of dual--beam LDV systems is proposed, and the design specification of the 3D LDV system is presented. The measuring accuracy of the on--axis component is also discussed in this paper.

研究一种采用频移分离方法的新型三维激光多普勒测速仪(3DLDV).该仪器以单色HeNe激光器和单只光电探测器并配合简单的光学发射和接收系统即实现了三维速度分量的同时测量.三个分量的速度信号由声光调制器引入的三种光学颁移区分,通过电子滤波器完成信号的相互分离.在光学发射系统设计中采用独特的单轴四光束结构,通过光束组合形成三组双光束差动模式的激光多普勒测速仪光路.本文中还给出了该仪器的系统设计参数并分析了轴向分量的测量精度.

Laser heterodyne measurement is a detection technique with high sensitivity and it has wide applications in the domains of ranging, tachometry, guidance, tracking and so on. Optical system plays an important part in heterodyne receive optics. The reasonable selection of performance parameters of optical system has direct influence upon the ability of system to detect objects. Primary parameters and living examples are given to show how to determine the parameter of optical system and make diffraction...

Laser heterodyne measurement is a detection technique with high sensitivity and it has wide applications in the domains of ranging, tachometry, guidance, tracking and so on. Optical system plays an important part in heterodyne receive optics. The reasonable selection of performance parameters of optical system has direct influence upon the ability of system to detect objects. Primary parameters and living examples are given to show how to determine the parameter of optical system and make diffraction spot radius match detector size in laser heterodyne detecting system with both receiver and transmitter. The parameters determined accord with the condition given by antenna theorem and meet demands of detector hybrid frequency.

激光外差探测是一种高灵敏度的探测技术 ,在测距、测速、制导、跟踪等领域有着广泛的应用 .光学系统在外差探测系统中占有很重要的位置 ;光学系统性能参量选择是否合理 ,直接影响系统探测目标的能力 .着重介绍了在收发合置式激光外差探测系统中 ,如何确定光学系统的参数 ,使成像的衍射斑与探测器尺寸匹配 ,并符合天线定理给出的条件 ,满足探测器混频的要求 .给出了各主要参数之间的关系式及计算实例

DSP (Digital Signal Processing) is a new technology. I t has been widely applied in optic-electric measuring system recently. An optic-el ectric measuring system was introduced in this paper. This system main includes the following parts: CMOS Image Sensor, Static RAM (SRAM), Complex Programmable Logic Device (CPLD) and Digital Signal Processor (DSPs). The CMOS Image Sensor i s used to receive optics signal and output image digital signal. The SRAM is use d to store image data. The CPLD is used to generate...

DSP (Digital Signal Processing) is a new technology. I t has been widely applied in optic-electric measuring system recently. An optic-el ectric measuring system was introduced in this paper. This system main includes the following parts: CMOS Image Sensor, Static RAM (SRAM), Complex Programmable Logic Device (CPLD) and Digital Signal Processor (DSPs). The CMOS Image Sensor i s used to receive optics signal and output image digital signal. The SRAM is use d to store image data. The CPLD is used to generate logic and timing. The DSPs i s used to process image data. The measuring system adopts the three-level pipeli ne structure: data conversion of the CMOS Image Sensor, data storage of the SRAM and data processing of the DSPs. Data acquisition and processing can be realize d in the real-time.

数字信号处理DSP是一门新兴技术 ,在光电测量系统中应用非常广泛。本文介绍了由CMOS图像传感器、静态存储器、可编程逻辑器件、数字信号处理器等组成的光电测量系统 ,CMOS图像传感器接收光学信号并直接输出图像数字信号 ,静态存储器存储图像数据 ,可编程逻辑器件产生逻辑和时序 ,数字信号处理器进行图像数据处理。测量系统采用了CMOS数据转换、SRAM数据存储和DSP数据处理三级流水线结构 ,能够实时进行数据采集和数据处理。

 
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