重点信息

Speckle is also the fundamental uncertainty factor in this kind of sensors. The analytic expression of centroid uncertainty limit is derived from the statistic of laser speckle, and it is shown that the uncertainty limit in RST, and also in anamorphic triangulation, is dependent on the solid angle subtended by entrance pupil as seen from the illuminated laser spot, the triangulation angle, as well as the laser wavelength. The influence of aberration of optical system and surface roughness are also discussed.(4) A method of getting the 3D edge characters based on the integrated vision system is studied.

重点研究了RST中的激光散斑现象，从散斑统计学的角度，首次推导了激光散斑引起的旋转对称三角法位移测量不确定度的极限，结果表明在光学粗糙表面上，该极限由投射激光波长，光学系统入瞳对投射光斑所张的立体角，以及光学系统主光轴与旋转轴的夹角确定；这一结论同样适用于其他变形成像的激光三角法。4基于RST的工作方式，研究了利用集成视觉系统的扫描移动来获得被测物体的低分辨率三维信息的方法。

Guangzhou, reputed as "Floral City" with trees and other plants evergreen and everblooming is a key tourist city of our country, and has a great number of historical sites and over 12O units with historical relics Drotected by the state, the province and the city respectively, and among them the Southern Yue King Tomb, Guangxiao Temple, the Six-Banyan Temple and Huaisheng Temple are more than 1,000 years old.

农村经济全面发展，在从传统农业向现代农业转化中形成了以生产鲜活农副产品为重点的城郊型格局；工业经济快速增长，以市场为导向，逐步形成了一个以轻加工工业为主，重工业有一定基础，配套能力较强，技术设备较为先进，外向型经济初具规模的工业生产体系；商贸、金融、旅游、信息等第三产业发展迅速，占国内生产总值的比重明显提高。

To enhance the extensible and efficiency of the sy...

同时，对远程教育系统中的信息表述问题也进行了重点研究。

For the opposition, how to get the parameter of the FH signal in a short time is essential to interference.

对于通信的干扰方来说，如何快速获得跳频系统的跳频信息，以对敌方系统进行有效干扰，成为现今研究的重点。

Dunhuang net holds the position of general manager by flagman of China's famous electronic business affairs, Ms. Wang Shutong that ever held the position of CEO of outstanding net the first to be appointed to an office, built up the elite personage of large quantities of outstanding international trade and Internet industry.

由于敦煌网可大大提升中国出口型中小企业的国际竞争力、带动重点行业和区域经济发展，中国信息产业部电子商务机构管理认证中心已经将其列为示范推广单位，国家发展和改革委员会所属中国中小企业国际合作协会、中国中小企业对外合作协调中心也将其作为战略合作伙伴。

The information and knowledge that you focus on.

信息和知识，你的重点。

Present a Ambiguity Function based on Fractional Fourier Transform. Its properties are studied. The application is discussed carefully that how to extract cube phase information by the Fractional Ambiguity Function.

给出了基于分数阶傅立叶变换的模糊函数，研究了它们的性质，重点讨论了分数阶模糊函数在三次相位信息提取中的应用。

Firstly, the research studies the coding rule of the PDF417 barcode and designs related computer code algorithm, with making it programmed, and completes the coding part of the system software. Next, the coding and decoding principle of Reed-Solomon error-correcting code is briefly introduced. According to thecoding and decoding principle in galois field GF(929), to analyze and study its practical application with emphasis in this topic. Then, the PDF417 barcode decoding process is analyzed and studied detailed according to the barcode coding principle, with the corresponding realization method designed, improving the design in theory aspect by using material example, at the same time programming the design method to complete the decoding part of the system. Finally, validated the system program in the practical application of image information aspect, by using the nonrepeatability and the randomicity characteristic of Julia mark shape artwork.

本课题首先研究PDF417条码的编码规则并设计相关的计算机编码算法使其程序化，完成系统软件的编码部分；其次，简要介绍Reed—Solomon错误控制码的编码与译码原理，在伽罗瓦域GF(929)内根据其编译码的原理重点分析与研究其在本课题中的实际应用；然后根据条码的编码原则对PDF417条码的译码过程进行详细的分析与研究，并设计出相应的实现方法，利用具体实例对设计方法进行理论方面的实践同时将设计方法程序化完成系统软件的译码部分；最后利用Julia集分形图形的不可重复性和随机性的特点对系统软件在图像信息方面的实际应用进行了验证。

Electronic-Commerce is one of the hottest topic in the world now. As the gate keeper of the Electronic-Commerce, the application and recommendation of SET Protocol (Secure Electronic Transfer Protocol) become the commen target of merchant and financial institution. The idea of SET Protocol is the secure protocol what is based on the smart card, the security of information and non-repudiation are the emphasis what they pay attention to .

电子商务是当今世界最热门的话题之一，作为电子商务的守护神，SET协议的使用和推广是商家和金融机构的共同目标，SET协议的思想是建立在智能卡基础上的安全协议，信息的保密性和不可否认性是其关注的重点。

1Institute of Geographical Science and Natural Resource Research, CAS, Beijing 100101, 2Yindongpo Goldfield, Tongbai County, Henan Province, 474750, 3Henan Academy of Geophysical and Engineering Exploration, Xinxiang City, Henan Province, 453000

1中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室，北京，100101； 2河南省桐柏县银洞坡金矿，河南桐柏，474750；3河南省地球物理工程勘察院，河南新乡，453000

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。