导航系统

To establish an independent satellite navigation and positioning system.

建立自主的卫星导航定位系统。

A mini and lowcost Strapdown Inertial Navigation System is designed, which can be used for civilian.

该论文针对民用低精度导航仪器，设计了一种低成本小型的捷联惯导系统。

The North-Finding system is one of the important applications of Inertial Navigation Systems.

寻北系统是惯性导航技术发展的重要应用成果之一。

By virtue of the instantaneous velocity of vehicles and precise time information supplied by GPS, a mathematic model can be established.

在利用GPS对车辆的定位与导航的基础上，进一步利用GPS提供的即时速度和准确的时间信息，通过数学建模，得到交通流量，平均车速，行程时间，车道占有率等一系列重要交通状况信息，以实现交通状况的实时检测，为城市交通管理系统智能化的实现提供必要保证。

In addition, RIGS can offer all-weather capabilities by presenting instrument landing system information and images from enhanced vision sensors.

此外，通过提供仪器导航着陆系统信息和来自增强型视觉传感器的图像，RIGS提供全天候能力。

And based on the perspective mapping, we have got the arithmetic of inverse perspective mapping, which realizes getting the depth of the object through the single camera.

根据摄像机透视映射原理，进行逆换算从而得到逆透视映射，从而实现了利用单摄像机获取环境深度信息，简化了系统的结构，有效的实现了自主避碰导航。

Ivanov said it would be available worldwide by the end of 2009, for which it would need to have 24 satellites.

他说，到2009年底，该系统的卫星数量有望达到24颗，从而实现全球定位导航。

Based on the feature of database,indexing way and technical method of a computer document reference system,the author simultaneously advances that between the expanding information and the demand of information users a library of a college or university should become a navigator to knowledge.

本文论述了网络环境下高校图书馆计算机文献检索之必然发展趋势，同时根据计算机文献检索系统的数据库、检索方式、技术方法等方面的特点，提出了在不断膨胀的信息资料和信息用户的需求之间，高校图书馆应该成为知识导航员。

Methods Six cadaveric lumbar vertebrae were harvested and evaluated with dual-energy x-ray absorptiometry and quantitative computed tomography to assess bone mineral density. Matched, polyaxial pedicle screws were then randomly assigned by side and placed using the Magerl, Krag or caudad trajectory technique assisted by Iso-C 3D scan and 3D navigation system. Cyclic loading tests were performed with a maximum 250 N load at 3 Hz up to 30000 cycles while recording load and displacement. Stiffness quotients were calculated it comparison.

从尸体中获取6节腰椎椎体经DEXA和QCT检测骨密度值，证实为骨质疏松后在计算机导航下按随机分组的方法向12个椎弓根中置人不同方向的椎弓根螺钉，使用MTS-858生物力学仪脊柱力学测试平台进行±250N的循环负荷疲劳测试，记录负荷循环中的螺钉位移，计算系统的刚度系数并进行对比分析。

Compared with simple point GPS, DGPS positioning scheme and plate-based integration navigation scheme, the system based on strap down inertial integration navigation scheme is more legerity and low-cost.

比起单点GPS定位，差分GPS定位和平台式惯导GPS组合导航方案，应用捷联惯导GPS组合方案的车载定位系统，更轻巧，更廉价。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐