垂直屏障也约束视场角，还不允许多重视角。
The vertical barrier also restricts viewing angles and doesn't allow for multiple perspectives.
选择依据主要是：位置分辨率，接收视场角和灵敏度。
The selecting rules are mainly position resolution, receiving FOV, sensitivity.
较宽的目镜视场搭配较低的放大率可以得到更宽的视场角。
An eyepiece with wide apparent field (in degrees) and lower powers used on a telescope allow wider fields of view.
由计算结果可以看出，不同的接收机视场角使得接收信号波形有很大的差异。
As known from the simulation results, different receiver field of view produce greatly different received signal waveform.
并以三轴电控转台为基础，用以搭建一套测量导引头上激光视场角的测量系统。
And basing on the three-axis motorized turnable, we build a measurement system for measuring the view angle of laser-guide device.
当像方视场角减小时，通过模拟得到了与实际相背的无源传输系统能量放大的结论。
When the field Angle in image space becomes smaller, the energy will be enlarged, which is impractical in a passive transfer system.
借助平行光和双面反射镜，对分光计望远镜的视场角进行了分析和测量，并通过实验得出了结果。
With the help of the ray of equal rank and double-faced reflector, the telescopic visual angle of the spectrometer was analyzed and measured. And the conclusion was drawn.
广角无限远视景显示系统以其图像清晰、视场角大、纵深感强等特点被广泛的应用在飞行模拟器中。
Because of image clear, visual field wide and good depth of field, wide-angle infinity display system has been used in a lot of flight simulators.
在导引头视场角不变的前提下，减小高度表阈值也能够避免障碍物对导引头视线的遮挡，有助于捕获目标。
If the view-area Angle of seeker is changeless, the reducibility of the threshold of altimeter will avoid that remora keeps out the LOS of seeker. This helps to capture the target.
本文提出了超广角井下电视系统视场角的概念及标定，以及利用该电视系统对井内落物尺寸进行精确测量的方法。
This article describe the concept and definiens of Angle of view of super wide Angle bore hole television system, and by means of this television system to measure the object in the well accurately.
通过前期相机工作视场角标定，对CMOS相机采集的视频图像采用MATLAB进行处理，实现对信号弹发射高度的实时测试。
By calibrating the camera Angle of view, the video images collected from CMOS camera are processed by MATLAB, and the real-time measurement for launching height of signal flare is achieved.
介绍了一种新型激光三维成像方法，该方法用条纹管作为成像系统的接收端，使激光三维成像雷达具有高帧频、大视场角的特点。
A new type of three-dimensional (3D) imaging laser radar is introduced. It uses streak tube as the receiver, which makes the radar have the peculiarities of high frame rate and wide range angle.
当光学系统口径一定时，在相同的轨道高度条件下，增大焦距可以提高地面分辨率，增大系统的视场角可以扩大对地面的覆盖宽度。
When the aperture diameter of an optical system is fixed with the same orbit height, the resolution of ground objects can be improved by increasing the focal length.
在实际工程应用时应根据不同的地面覆盖宽度的需求确定光学系统视场角，然后根据不同的视场角选定能满足这个视场角要求并尺寸最小的光学系统结构形式。
In the practical applications, according to the ground swath width determine the FOV, then choice the optical system configuration which can satisfy the needed FOV and small dimension.
通过望远镜你所能看到的天空的范围称作真实视场，以弧度值(角视场)来度量。
The amount of sky that you can view through a telescope is called the real (true) field of view and is measured in degrees of arc (angular field).
在先进的火炮动态性能测试系统中，光学系统固有的畸变使得不同视场下的实际焦距不同，间接地影响系统的测角精度。
Distortion of optical system makes focal length of advanced fire control dynamic performance test system different at different FOVs, and influences angle-measuring precision.
本文基于光学三角法测量原理，设计了一种通过改变光平面与成像光轴夹角来实现对视场内被测零件表面扫描的视觉测头。
A novel noncontact scanner that scans the inspected part's surfaces by changing the Angle between laser plane and optical axis is designed based on optical triangulation.
为了减少视场倾斜，提高成像质量，必须确定掠入射角和确定光阑的位置。
In order to reduce the inclination of the field of view (FOV) and improve the image quality, it is important to determine the grazing incident Angle and the position of stops.
为了减少视场倾斜，提高成像质量，必须确定掠入射角和确定光阑的位置。
In order to reduce the inclination of the field of view (FOV) and improve the image quality, it is important to determine the grazing incident Angle and the position of stops.
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