相干条件

相干条件研究

Study on Coherent Condition

本文从光波的矢量性角度，讨论光波的相干条件之一：有相同的振动方向这一条件并不严格、不全面.光的相干条件

In this paper , based on vector of light wave We discuss the one of coherent condition

本文利用该模型研究了共焦系统的数值孔径对OCT系统成像深度的影响，估计了满足OCT相干条件的背向散射光的漫反射率。

The effect of numerical aperture of confocal system for the image depth of OCT is studied with new model . The diffuse reflection of back scattering light satisfied with OCT coherence condition is also estimated with this model .

光相干条件的定量分析

Quantitative analysis of interference conditions of light

预群聚电子束发出的超辐射脉冲的推迟效应、寿命和相干条件

Retarded effect , life time and coherent condi tions of the SUPERRADIATION pulses emitted by the PREBUNCHED ELECTRON BEAM

本文在部分相干条件下，研究了光学和电子显微镜的直边衍射和象质的评价及定量测试方法。

This Paper deals with the evaluation of image quality and straight edge diffraction in optical and electronic microscope , and the method for quantitative measurement under partially coherent conditions .

分析讨论了原子全息与光学全息的区别，指出只有经激光冷却的原子束才满足全息技术所要求的相干条件和衍射条件。

Analyzing the difference of atom hologram and optical hologram , we point out that only the laser cooling atoms can satisfy the coherent and diffract conditions required by the hologram technology .

本文定量地论述光波的三个相干条件并指出位相差必须恒定在这一条件对产生光的干涉效应是很关键的。

This paper gives a quantitative account of the three conditions on coherence of light wave and shows one of them , whose phase difference must remain unchanged , to be crucial in producing interference of light wave .

根据光的相干条件，对杨氏双缝干涉实验中暗条纹公式的不统一以及与实际干涉图样不吻合等现象进行了分析，提出修正意见。

According to the condition of coherent light , after assaying the inconsistency of the dark stripe equation in Tomas Young 's tow-slit experiment , and the inconsistency with the actual interference diagram , I expounded some opinion for amelioration .

分布式OS-CFAR检测在多脉冲非相干积累条件下的性能分析

Performance analysis of distributed os-cfar detection with noncoherent integration of multiple pulses

首先，提出了在一般的非相干信号条件下快速有效的联合参数估计方法，并研究了统计性能和推导了估计误差的渐进均方误差（MSE）表达式。

Firstly , we present a fast and efficient method of which the statistical analysis is studied with respect to the noncoherent signals , and the asymptotic mean-squared-error ( MSE ) expression of the estimation error is derived .

天波超视距雷达（OTHR）的观测范围非常广，实战中经常要求在短相干积累条件下检测出舰船目标。

Since the surveillance area of sky wave Over-The-Horizon Radar ( OTHR ) is very vast , realizing the ship detection with short coherent integration time ( CIT ) is an operational requirement for OTHR .

＠研究了分布式CFAN检测在多脉冲非相干积累条件下的性能，推导出了分布式OS－CFn检测在多脉冲视频积累条件下在非均匀杂波背景中检测性能的解析表达式。

The distributed CFAR detection is studied under the condition of noncoherent integration of multiple pulse . The analytic expression of detection performance of the distributed OS-CFAR detection is derived for video integration of multiple pulse in nonhomogenous background .

部分相干照明条件下物镜表观传递函数的测定

Measurement of the Apparent Transfer Function of Systems with Partial Coherence Illumination

短相干积累条件下天波超视距雷达的舰船检测

The Ship Detection of Sky Wave over-the-Horizon Radar with Short Coherent Integration Time

相干捕获条件下原子态的特性

Properties of the State of the Atoms Trapped Coherently

用自相关法确定壁湍流相干结构条件采样的门限值

Determination of the Threshold Values for Conditional Sampling in Detecting the Coherent Structures of Wall Turbulence by Using Auto Correlation Method

本文给出一种部分相干照明条件下元象差显微物镜成象特性的快速模拟算法。

This paper presents a new algorithm used for fast simulating the image formation characteristics of aberration-free system with partly coherent light .

在原子相干效应条件下，由于场与原子之间的相干耦合，导致原子能态的相干叠加，因而导致与之作用场的光场特性发生变化。

The coherent superposition of atomic states leads to the change of properties of interaction lights because of the coupling between the lights and atoms .

主要内容概括如下：1.建立了双/多基地参数估计模型，推导了双/多基地模型下，接收同一信号源的信号不同基地之间存在相干的条件。

The content of the paper can be summarized as follows : 1 . The bistatic and multistatic parameter estimation model is set up . The coherence condition for different received signals which come from different static is derived .

然而，在相干检测的条件下，衰落信道因子（coefficients）需要事先被估计出来，然后才能被用到数据信息的检测过程中去。

However , under the assumption of coherent detection , the fading channel coefficients need to be first estimated and then used in the detection process .

可工作在散射光照明或部分相干光照明条件下。

This system may operate with an illumination of scattering light or partial coherent light .

此外，根据大气湍流的多层次性，分析了分尺度风速相干结构的条件相位平均波形，从而得出了风场中不同时间尺度下风速的平均演化规律。

Besides , according to multilevel nature of atmospheric turbulence , conditional phase-averaged waveforms of multi-scale coherent eddy structures for wind speed are studied .

还讨论了非相干照明的条件，窄带滤光片的带宽和扫描光栅的精度要求。

The condition of the incoherent illumination , the half bandpass width of the narrow bandpass filter and the ac-curacy of the scanning grating are discussed too .

提取了湍流边界层中多尺度相干结构的条件平均波形，研究了多尺度相干结构猝发的动力学过程。

Moreover phased-average evolution shapes for multi-scale coherent eddy structures in turbulent boundary layer are extracted and the dynamic course of the burst of multi-scale coherent eddy structures is researched .

随着A/D采样速度、分辨率的提高，相干采样的条件很难满足，这对测试系统硬件和软件要求很苛刻。

Along with the A / D sampling speed , the resolution of the conditions improve , coherent sampling , difficult to meet the test system hardware and software requirements are demanding .

给出了与单模场相互作用的两个不同二能级原子发射谱的精确表达式，研究了系统初始状态对原子发射谱的影响，并得出了系统出现相干捕获的条件。

We give an analytical expression of emission spectrum for two different two-level atoms interacted with one-mode field . The effect of initial state of system on the emission spectrum for two-level atoms is explored , and the conditions leading to atom coherent population trapping are investigated .

本文评价了辨识湍流边界层近壁区域相干结构的条件采样法、自相关函数法、数字滤波法和子波分析法。

An evaluation of the effectiveness of conditional sampling , auto correlation function , digital low pass filter and wavelet analysis coherent structure identification algorithms has been done while they are used to detect the coherent structures that arise in the near wall region of turbulent boundary layer .

超冷异核分子相干产生的绝热条件及量子控制研究

Adiabatic Condition and Quantum Control for Creating Heteronuclear Molecule

本文用密度矩阵方法研究了相干态在时间演化过程中仍保持为相干态的充要条件。

By means of the density matrix method , the necessary and sufficient conditions for a coherent state to remain coherent at all times are discussed .