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ccd靶面
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  “ccd靶面”译为未确定词的双语例句
     Measurement for the Matrix CCD Effective Target Area’s Sizes in the Image Collection System *
     图像采集系统中 CCD 靶面有效尺寸的测量
短句来源
     In the measurement of wavefront slope, a sub-pixel method is used to increasethe accuracy of locating the light spot mass centers which are formed at a CCDsensing surface when a testing light wave passes through the Hartmann-Shack sensor.
     测量波前斜率时,用亚象素法来提高待测光波通过子孔径阵列后在CCD靶面形成的光斑质心的定位精度。
短句来源
     The main contents are as follows:(1) Some methods for recording and reconstructing digital holograms with large size are proposed.
     (1)通过对CCD靶面的精确平移,实现了大幅面数字全息图的拼接记录。
短句来源
     Using external trigger control system of CCD camera and the EPLD device, the image of a static object when the illuminance of CCD FPA (Focal plane array) less than 3 7×10 -5 lx with resolution of 300TV lines was detected.
     可获得当CCD靶面照度为 3 7×10 -5lx下静态目标达到 3 0 0TVlines分辨率的图像。 给出标准的视频信号输出及实时显示。
短句来源
     With the analysis for the relationship between an angle measuring error caused by pixel shift and focal length as well as between illumination on CCD target and clear opertare, and with modulation Contrast satisfied for signal detection as criterion, optimum design of optical parameters is discussed.
     从分析像点位移引起测角误差与 焦距的关系以及CCD靶面光照度与通光口径的关系着手,用满足信号检测的调制对比度作为判据, 探讨光学参数优化设计的方法。
短句来源
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  相似匹配句对
     COMPUTER SIMULATION FOR RESOLUTION IN THE CCD INTERSECTING TARGET PLANE
     CCD交汇系统分辨力的计算机仿真研究
短句来源
     New Target Ship——Plane Target
     新型船——
短句来源
     Measurement for the Matrix CCD Effective Target Area’s Sizes in the Image Collection System *
     图像采集系统中 CCD 有效尺寸的测量
短句来源
     THE DIGITIZED TRANSFORM OF AREA ARRAY CCD
     CCD成象的数字化变换
短句来源
     Study on the Image Binary of Area CCD
     CCD图象二值化研究
短句来源
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Using CCD camera as a detector, the spot position can be determined accuratly in which the accuracy of POSition is smaller than a pixel.In this paper," centre of gravity" method is adopted as the definition of sPOt poSition. A complete Fourier analysis are presented. The varieties of intensity distribution functions of spot are discussed.

利用成像在CCD靶面上的光斑光强分布,可以突破象素的限制,精确地确定光斑位置。本文首先在国际上针对这一问题的研究进展的基础上,给出了重心算法完备的付里叶分析,然后用付里叶变换的观点比较了不同光斑函数对检测精度的影响。

In this paper, a method for calculating the displacement of star images caused by differential atmospheric refraction during observations is described. It includes the determination of the optimum rotation of the focal surface. All our formulas are exact except that for atmospheric refraction. The displacement of star images due to differential atmospheric refraction is calculated in detail for the Large Sky Area Multi object Fiber Spectroscopic Telescope (LAMOST) which will soon be developed in China....

In this paper, a method for calculating the displacement of star images caused by differential atmospheric refraction during observations is described. It includes the determination of the optimum rotation of the focal surface. All our formulas are exact except that for atmospheric refraction. The displacement of star images due to differential atmospheric refraction is calculated in detail for the Large Sky Area Multi object Fiber Spectroscopic Telescope (LAMOST) which will soon be developed in China. The latitude of the site is 40.4°, the sky area observed is -10° δ +90°, each observing duration is 1.5 hours around the time of meridian passage, and the field of view is 5°. Detailed results are listed in which the maximum displacement of star images is 0.859″. The diameter of the fiber is 3.3″ in the LAMOST. The positions of the fibers may not be adjusted during one such observation. Guiding with optimum rotation of the focal surface is suggested in this paper: If a CCD is used, the rotation of the focal surface can be guided by any appropriate star just by moving the image along the tangent in the CCD's target plane by an amount in accordance with what is calculated in this paper. Approximate optimum rotation of focal surface is obtained if the guiding star is in the direction of the angular bisector between the declination and the right ascension (four 45° directions). The algorithm and the way of guiding proposed in this paper can be used for any area of sky, any time of observation and any telescope with rotatable focal surface.

本文给出了一种计算观测过程中较差大气折射引起的星象移动的方法,包括焦面最佳转动的确定.算法中除大气折射公式外,都是严格的.本文用这种方法详细计算了我国即将研制的大天区面积多目标光纤光谱望远镜(LAMOST)中较差大气折射引起的星象移动,文中详细计算了望远镜安放在纬度40.4°,观测天区-10°δ+90°,天体过子午圈前后1.5小时,视场直径5°情况下,星象移动的结果,并得到星象的最大位移为0.859″,LAMOST中光纤的直径是3.3″,光纤定位系统可不作校正.本文提出了实现焦面最佳转动的导星方法:在导星元件是CCD的情况下,可任选一颗星来引导焦面旋转,只要使星象在CCD靶面上作切向位移,其值等于按本文方法计算得到的值,若采用赤径、赤纬分角线方向(四个45°方向)的星来引导旋转,也可近似地得到焦面的最佳转动.本文提出的算法和导星方法,可应用于任何天区,任意的观测时间和任何形式的焦面可旋转的望远镜.

When the combustion images in utility boilers are captured by some digital image processing systems the two-dimensional giay-scale distribution in the images is just a kind of integral effect of the three-dimensional radiative energy of the combusting mixture in furnaces on the image transducer (i. e.the target of Charge-Coupled Device) through optical image formation. Based on this fundamental,a mathematical equation between the two-dimensional gray-scale image and the three dimensional temperature distribution...

When the combustion images in utility boilers are captured by some digital image processing systems the two-dimensional giay-scale distribution in the images is just a kind of integral effect of the three-dimensional radiative energy of the combusting mixture in furnaces on the image transducer (i. e.the target of Charge-Coupled Device) through optical image formation. Based on this fundamental,a mathematical equation between the two-dimensional gray-scale image and the three dimensional temperature distribution is set up,and with the aid of two-color pyrometer, the quantitative relationship between the radiative energy from the furnaces and the grey-scale of the images, which will be very difficult in general case,has been es tabilished, the feasibility of this method is discussed, and some consideration to improve this method is proposed. This method can be extended into the case of measurement of three-dimen sional combustion temperature distribution in nternal engine combustion, jet engine combustion,etc.

采用数字化摄象装置从电站锅炉炉膛第三级燃烧空间摄取燃烧辐射圈象时,所得到的二维灰度分布图象实质上是燃烧介质的三维辐射能量通过光学成象的方式在图象传感器(如CCD靶面)二维平面上的某种累积效应,以此原理为基础,本文建立了二维辐射国象和三维辐射能量(温度)分布的数学关系式,并从比色测温法入手,从理论上解决了其中难度较大的从幅射能转换到图象灰度的定量关系问题,使得这种方法变得简单易行。最后对这种方法实施的可行性进行了分析,并讨论了改进测量精度的途径。这种方法容易推广到内燃机燃烧、航空发动机燃烧等场合的三维温度分布检测中。

 
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