查询词典 wavefront

Based on cross correlation coefficient and absolute difference algorithm s and the principle of Hartmann Shack wavefront sensor, the feasibility of correlating Hartmann Shack wavefront sensor used for low contrast and extended object is studied according to the indoors solar granulation simulator.

基于互相关因子和绝对差分算法以及哈特曼夏克波前传感器的基本原理，根据室内模拟太阳米粒结构研究了低对比度扩展目标情况下应用相关哈特曼夏克波前传感器探测波前误差的可行性。

The results show that the effects on the output laser wavefront of the FADW are mainly the beam deflexion and the beam divergence, the other high-level wavefront errors are very low.

结果表明，自由旋涡气动窗口对输出激光波前的影响主要是光束偏转和离焦，特别是气动窗口工作在设计状态时，其余低阶及高阶像差都比较小，能够满足实际需要。

AIM: To compare the dioptre results obtained by wavefront analyzer and subjective refraction test, respectively, and to evaluate the accuracy and reliability of lowerorder aberrations measured by wavefront analyzer.

目的：比较波前像差仪与主观验光法对屈光度检查的结果，探讨波前像差仪对低阶像差测量的可靠性和准确性。

The influence of the pumping on laser wavefront has been measured with a Hartmann wavefront sensor.

用哈特曼网格法测量了氙灯泵浦对激光波面的影响以及放大器的冷却过程。

The results obtained are good agreement with the experimental results of gain uniformity measured by threshold method and laser wavefront measured by Hartmann wavefront sensor.

计算结果与作者用阈值法测量的增益均匀性以及用哈特曼网格法测量的氙灯泵浦对激光波面畸变的影响是一致的。

Because this algorithm has some better performance to reconstruct the incident wavefront, and refers to the nonlinear responses of the influence function, a new solution to correct the wavefront aberration by the CMDM is found.

结果表明，基于模拟退火的波前模式复原算法具有良好的波前复原性能，并且可结合影响函数的非线性特征描述，为连续膜波前复原控制问题提供一种新的解决途径。

MMDM correction capability is analyzed and a closed-loop correction model of adaptive optical system is established. An adaptive optical experimental system based on MMDM is built. Moreover, wavefront from human eyes is used as the incident wavefront of adaptive optics system.

搭建基于MMDM 的自适应光学实验系统，采用人眼出射波前作为原始波前进行实验，结果表明，模型能快速有效的对动态畸变波前进行校正，为基于MMDM 的自适应光学系统提供了算法支持。

An adaptive optical experimental system based on a 37-channel MMDM from OKO company is built. The wavefront aberration of a model eye and a human eye is investigated as the incident wavefront of an experimental adaptive optics system.

搭建基于OKO公司37通道微机械薄膜变形镜的自适应光学实验系统，分别以模拟眼和人眼出射波前为入射畸变波前进行实验。

In Chapter 4, A detailed comparison between the realization of Cholesky decomposition and OR method is given, a systolic/wavefront array made of general purpose DSP is used to realize the adaptive beamforming at a moderate speed, and a wavefront array to extract the adaptive weights which is necessary in some applications is designed. In Chapter 5, the author proposed a new structure to realize the space time adaptive processing. First 1~q using the FFr and the truncating infinite sequence and sone optimizing method, a much simpler architecture can be acquired in realizing the three portion of channel processing: quadrature sampling, pulse compression and adaptive equalization.

第五章研究并提出了用全通用DSP模块设计空时二维自适应信号处理机的新方案，首先用快速付立叶变换和对长序列截断处理的重叠保留法以大大减少的运算量完成了处理机通道处理部分的正交插值、脉压、自适应均衡三个功能块的长阶数线性卷积运算，接着对自适应波束形成提出了多种实现方案，分析了多种方案下的运算量和设备要求，指出在不同通道数、不同数据吞吐率、不同自适应要求时这几种方案有不同的可行度和实现难度，并针对实际要求确定了一种运算田N、的实现方案，对自适应波束合成部分的大量贝玉以良元组咸肋冈络结拘和处凰闺和羽凶挝娠昨了优化设计以威少设备复杂性，构成了设备量大夕父伯小、们g团回高、辜于生回阴田闩引愧快的空时二维自适囱戏升引毗四机。

Noll. From the irradiance distribution in two defocal planes, one in front of focal plane and the other behind, with a given detector array the elements of response matrix for each normalized term of Zernike polynomials can be obtained. For an incoming atmospheric disturbed random wavefront, with its irradiance distribution detected in two defocal planes and the response matrix, it is easy to solve the corresponding Zernike term coefficients of incoming wavefront and reconstruct the detected one.

Noll建议的Zernike多项式表征经大气扰动的入瞳处的光学波前畸变；求出由两个离焦面上的光强分布决定的归一化Zernike项在特定形状的探测器上的响应矩阵；由响应矩阵和入瞳处的波前在两个离焦面上的光强分布，求出其Zernike项的系数，从而实现波前的探测和重构。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。