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recording distance
相关语句
  记录距离
     Expound the principle of optical and digital holography and build the numerical model of recording and reconstructing process. Then we elicit the location of reconstructed image and the conditions of experiments, such as the range of recording distance and angle between the object light and the reference light.
     在理论上详细阐述了光学全息和数字全息的原理,建立了数字全息图记录与再现的数学模型,得出数字全息再现图像的具体位置,在此基础上,着重分析了具体数字全息实验中需要满足的一些条件,包括参考光与物光的夹角范围及记录距离范围。
短句来源
     3) Lateral resolution of the reconstructed images is mainly determined by the highest spatial frequency of digital holograms recorded by CCD,and increases with the larger CCD size,the higher spatial resolution of the CCD sensor,and the shorter recording distance.
     再现像的横向分辨率主要由CCD所能记录的物体的最高空间频率决定,它随CCD的尺寸和空间分辨率的提高及记录距离D的减小而提高。
短句来源
     The main analysis was that,for a certain CCD and the recording wavelength,the transfer function was influenced by the recording distance,and the reconstructed image quality was also investigated.
     主要分析了对一给定的CCD和记录波长,记录距离对传递函数的影响,进而分析了对再现像像质的影响。
短句来源
     The characteristics of the reconstruction algorithms were analyzed, and the algorithm used to determine the exact recording distance was presented.
     介绍了单幅全息图数字再现技术,分析了再现算法的特点,提出了准确确定记录距离的算法。
     Numerical results show that the resolution and space-bandwidth product of reconstructed image are decreased with the increase of the recording distance when the digital holograms are reconstruct by the algorisms of Fresnel integral or Fourier transformation, and have no change when reconstructed by convolution method.
     结果表明采用菲涅耳积分变换法和傅立叶变换法再现时,其再现像的分辨率和空间带宽积随记录距离增大而降低,而采用卷积法再现时,其再现像的分辨率及其空间带宽积都不随记录距离改变而改变。
短句来源
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  相似匹配句对
     Distance
     距离
短句来源
     recording electrodes are placed some distance away from thestrip.
     紧贴心内膜面和心外膜面处放置电极,以内膜表面或外膜表面电极相互
短句来源
     The Design for GZL-1 Failure Recording and Distance Device
     GZL-1故障录波仪及测距装置的设计
短句来源
     Measure the distance
     中国距离造船强国还有多远
短句来源
     Recording rules of reference
     参考文献著录规则
短句来源
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  recording distance
To include ten complete cycles, a minimum recording distance of 120 m should be used.
      


The Failure-Recording & Distance-Determining Device used in power system is a kind of monitor. Whenever short circuit or oscillation occurs in the electric net system ,the device will start recording automatically the electric wave forms 40ms before or after the failure. As soon as the failure disappears, it stops recording the wave forms.

故障录波仪及测距装置是用于电力系统的一种监测装置。当电力网系统发生短路或振荡等故障时,它能自动起动并记录故障前40ms 及以后的波形,供分析研究之用。一旦故障消失,即刻停止录波。

Basic characters of digital holographic profiling including its system error, resolution, imaging depth, and the size limit of the recorded object are theoretically discussed in this paper. It is pointed out that the system error of digital holographic profiling is in proportion to the squared size of the CCD chip and in inverse proportion to the recording distance. This paper also pointed out that the resolution of digital holographic profiling and the maximum size of the recorded object are all proportional...

Basic characters of digital holographic profiling including its system error, resolution, imaging depth, and the size limit of the recorded object are theoretically discussed in this paper. It is pointed out that the system error of digital holographic profiling is in proportion to the squared size of the CCD chip and in inverse proportion to the recording distance. This paper also pointed out that the resolution of digital holographic profiling and the maximum size of the recorded object are all proportional to the size of CCD chip and in iverse proportion to the recording distance, while its imaging depth increases with the recording distance.

在对数字全息技术进行严格理论分析的基础上 ,指出随单个 CCD像元尺寸的减小可能被记录物体的横向尺寸将变大 ,所允许的纵向尺寸却变小 ;另一方面其系统误差和被测量值本身的大小成正比 ,和横向分辨率成反比。

On the basis of coherent image theory,starting with the analysis of a point spread function of digital holography,the influence factor of the reconstructed image quality in digital holography was studied.The main analysis was that,for a certain CCD and the recording wavelength,the transfer function was influenced by the recording distance,and the reconstructed image quality was also investigated.It comes to a conclusion that the object should be placed as close as possible to the CCD target in the digital...

On the basis of coherent image theory,starting with the analysis of a point spread function of digital holography,the influence factor of the reconstructed image quality in digital holography was studied.The main analysis was that,for a certain CCD and the recording wavelength,the transfer function was influenced by the recording distance,and the reconstructed image quality was also investigated.It comes to a conclusion that the object should be placed as close as possible to the CCD target in the digital recording of hologram when the sampling theorem is fulfilled.The mathematical description of the minimum allowable recording distance in digital holography was given,and the relevant experimental results were also presented.The experimental results show the validity of theoretical anlaysis.

依据相干成像理论,从分析数字全息系统点扩散函数入手,研究数字全息系统中影响再现像质的因素。主要分析了对一给定的CCD和记录波长,记录距离对传递函数的影响,进而分析了对再现像像质的影响。得出了在满足抽样定理的条件下,应尽量使记录物体靠近CCD;给出了最小允许的记录距离数学表达式及相应的实验结果。实验结果证明了理论分析的正确性。

 
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