The problem how to select optimum of signal-to-noise ratio and laser beam divergence for laser range-finder is studied.
研讨激光测距仪的信噪比和激光发散角如何选取最佳值的问题。
In this article we discuss the relation between the laser beam divergence and the amplification factor in unstable cavities and the principles for the design of unstable resonators are given.
本文研究了非稳腔激光束发散度与腔的放大倍数的关系，并提出了非稳腔设计的原则。
According to acquisition and tracking strategy and laser detection theory, an expression of the best Angle of beam divergence under direct detection is provided.
根据捕获跟踪策略和激光检测理论，给出了直接探测情况下最佳光束发散角的表示式。
The operating distance of a laser radar system is determined on pulse energy, pulse width, beam divergence angular, atmosphere attenuation, target reflection, receiver sensitivity and so on.
激光雷达系统的作用距离由下列因素决定：脉冲能量、脉冲宽度、光束发散角、大气衰减、目标反射率和接收机灵敏度等。
Theory analysis and computer simulation show that the precision and focus of star tracker, the divergence angle of down beam influence the probability of laser link setting up.
理论分析和计算机仿真都表明，星敏感器的测量精度和焦距，下行信号光的束散角将影响激光链路成功建立概率。
In conditions that the laser gains can be obtained, the relations between the maximal allowable divergence Angle of incident electron beam and other physical parameters are discussed.
在获得激光增益的条件下，讨论了入射电子束的最大许可发散角与其它物理参数之间的关系。
This paper demonstrated the basic parameters and characteristics of laser beam, and introduced the basic principles and the devices used in the CCD laser divergence Angle measurement method.
简述了激光光束的基本参数及特性，并介绍了采用CCD进行激光发散角测量的基本原理和装置。
Finally by analyzing these data we can obtain the parameters about the laser beam such as: beam size, relative beam power, relative peak power, divergence Angle, M2 factor and so on.
通过分析这些数据可以获得有关光束的一些参数，如光斑尺寸、相对光功率、相对峰值功率、发散角、M2因子等等。
The primary function of the optical transmit antenna is to collimate far-field divergence of the laser beam and reduce the size of the laser beam in .
由于大气衰减的影响，非视线散射大气光通信需要使用光学天线以提高对光信号的采集能力，进而增加通信距离。
The primary function of the optical transmit antenna is to collimate far-field divergence of the laser beam and reduce the size of the laser beam in .
由于大气衰减的影响，非视线散射大气光通信需要使用光学天线以提高对光信号的采集能力，进而增加通信距离。
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