对准

This article studies the design of Alignment system based on video and confocal, Mask-Panel Alignment is one of the threes key technologies (projectionlens, aligner, wafer stage)in lithography.

针对目前我们研究的激光投影光刻机对高分辨力和高衬度的需要，设计了一套基于视频图像对准原理的激光投影光刻对准系统。

Remove the carburetor and backplate assembly. Notice the impressionmade on the crankshaft counterweight. Position it directly straight down

拆开化油器、引擎被盖可看到引擎主轴配重端边缘有一圆点，将这点对准引擎机壳正下方，或对准机壳下方的模具接合线。

In the domain of geometric registration, we separatively discuss the direct image registration and feature-based image registration, and make compare with each other.

在几何学对准中我们分别讨论了直接法图像对准和基于特征的图像对准，并作了比较。

On moving base, a new initial alignment algorithm for strapdown inertial navigation system is proposed. In the algorithm, two special inertial frames, the initial-time inertial frame (i0 frame) and the initial-time SINS body inertial frame (ib0 frame), are defined and are selected as calculation reference frames, then, the calculation of initial alignment direction cosine matrix is expanded into three parts:(1) the DCM between i0 frame and the navigation frame will be easily obtained via local geographical coordinates and initial alignment time;(2) attitude updating using gyro samples gets the DCM between SINS frame and ib0 frame;(3) by explaining SINS specific force equation in SINS body frame, the relation between velocity log, accelerometer measurement and gravity acceleration is established to achieve the constant DCM from ib0 frame to i0 frame.

在运载体运动情况下，提出了一种适用于捷联惯导系初始对准的新算法，该算法以惯性空间为参考基准，即建立了初始时刻惯性坐标系（i0系）和初始时刻捷联惯组惯性坐标系（ib0系）两个惯性坐标系，将初始对准姿态矩阵的实现分解为三部分：（1）通过地理位置和初始对准时间求解i0系至导航坐标系的变换矩阵；（2）使用姿态更新算法实时计算捷联惯组相对于ib0系的变换矩阵；（3）通过惯导比力方程变形，获得测速仪辅助测量、加速度计输出和重力加速度之间的关系，从中可以求解出从ib0系至i0系的常值变换矩阵。

In order to solve the problem, in this dissertation, a new IA technology based on wavelet-filtering and two-position alignment is proposed. The useful signals of sensors are gained by wavelet filtering; the error angles, constant drifts of FOGs and biases of accelerometers are computed through signals at two positions.

对此，本文提出了一种基于小波滤波方法和二位置对准方法相结合的初始对准技术，采用小波滤波方法提取传感器的有用信号，利用两次转位的信号解算初始对准的误差角、陀螺的常值漂移和加速度计的零偏。

To study the fast initial alignment of ring laser gyro strapdown inertial navigation system for land vehicle, the two-position alignment technology was adopted, the principle and software flow of the method were presented, the alignment precision was tested and the error sources having influence on alignment precision were analyzed.

研究车载激光陀螺捷联惯导系统的快速初始对准技术。采用双位置对准的技术方案，给出了双位置初始对准的基本原理及软件流程，对对准精度进行了实际测试，并对影响对准精度的误差源进行了分析。

The sixth chapter will discuss the initial alignment of the Marine SINS theoretically. First, the error characters of initial alignment will be analysed, then, a new two-position alignment method together with the realization of the estimation of the gyroscopes' random constant drifts will be presented.

第四部分从理论上着重讨论了舰载捷联式惯导系统的初始对准问题，对初始对准的误差特性进行了较深入的分析，提出了可在初始对准的同时完成对陀螺仪随机常值漂移估计的双位置对准方法，并对该方法进行了理论分析，可行性分析和仿真计算分析。

The given algorithm is simulated in various swaying conditions and compared, with the classical gyrocompassing approach The simulation results indicate that this method effectively improves the alignment performance, and the alignment time of azimuth is shortened by 50% as compared with that iu the gyrocompassing approachin the sam...

给出的算法在几种不同的晃动条件下进行了仿真计算，并和经典的陀螺罗经对准法作了比较。结果说明这种方法有效地改善了捷联惯导系统在晃动条件下的对准性能。在同样的模拟环境下，与罗经对准法相比，方位对准时间缩短将近一倍。

On the basis of analyzing the output signal of a two wavelength beat-wave absolute distance interferometer, this paper proceeds from the realities of the aiming method of the beat-wave interferometer, conducts an analytical investigations on the dependence of the aiming accuracy of the beat-wave interferometer on laser dual-line output power equilibrium, propose two new concepts-a basic aim blind area and a blind area expansion, and establishes an analytical expression between the blind area expansion and the relative power difference of laser dual lines.

本文从拍波干涉仪对准方法的实际出发，在分析双谱线拍波干涉仪输出信号的基础上，研究了双谱线功率不一致与拍波干涉仪对准精度的关系，提出了基本对准盲区和盲区扩大量的新概念，建立了描述盲区扩大量与双谱线相对功率差之间关系的解析表达式。

Mounting and alignment structures for optical components allow optical components to be connected to an optical bench and then subsequently aligned, either passively or actively, in a manufacturing or subsequent calibration or recalibration, alignment or realignment processes.

用于光学元件的安装和对准构件，可以允许光学元件被连接到一光具座上，然后在后面所进行的制造、或校准、或再校准、对准或再对准过程中被无源地或有源地对准。

The commercials enigmatically depicted various scenes from what appeared to be a short narrative that climaxed with a car crashing into a swimming pool.

这次的企划是让一帮共和党人站出来解释，为何自己00年大选选了布什，04年却把票子投给了克里。

If you are wanting the best, designer gold and diamond necklaces are the very best.

如果你想要最好的，设计黄金和钻石项链是最好的。