导航

Considering the limits of RDSS in active positioning mode,such as poor security,limited capacity,and inability to continuously provide position,velocity and attitude outputs,a technique of tightly coupled RDSS /SINS integrated navigation system is proposed for land vehicles by utilizing the time differenced carrier phase of 3 geostatic satellites.

针对北斗系统有源定位方式保密性差、用户数目有限，不能提供连续的位置、速度、姿态信息的问题，提出利用北斗系统3颗地球静止卫星的载波相位时间差分信息，与车载捷联惯导构成紧组合导航系统，通过扩展卡尔曼滤波器估计并修正惯导系统的速度误差；引入载体的侧向和天向速度约束，改善了速度估计精度；结合北斗系统的伪距信息，消除了长航时条件下位置误差的积累；推导了滤波器观测方程，对组合导航滤波器进行了设计；通过车载实验进行了验证，实验结果表明，速度误差和位置误差的积累受到了有效地抑制，精度满足陆地战车导航的要求。

Also, it adapts to the prevailing trend of web service, which is drawing map by SVG.The techniques and theories involved in navigating map system based on smart phone are not yet mature, but because of the particular advantage when exploiting mobile information service and because of the commercial chance and huge market, the future of navigating map system based on smart phone is luciferous. So, I must to say it is very important to do some research work to the navigating map system based on smart phone.

由于面向智能手机的导航地图系统所涉及的技术和理论还不够成熟和完善，而面向智能手机的导航地图系统在开发移动信息服务方面有着自身独特的优势，并在人们生活中有着潜在的巨大市场和商机，因此在技术和理论的不断发展和完善中，面向智能手机的导航地图系统有着广泛的应用前景，对其研究有着极其重要的作用。

A kind of combined navigation system for the XAUT·AGV100 developed by our institute was designed through the analysis of commonly used guiding styles of mobile robot, adopting coders and gyroscope to provide real-time guiding information to realize the path tracking, apperceiving the environment messages at the task points and part feature points by ultrasonic sensor to position.

2通过对移动机器人常用导航方式的分析，为自主开发的XAUT·AGV100设计了一种组合导航系统：采用编码器和陀螺仪为AGV提供实时导航信息以实现轨迹跟踪，采用编码器和超声波传感器在作业站点及部分特征点处对环境信息的感知实现作业定位。

Information from the subsystem of the integrated navigation system is syncretized by Kalman filter, which can output higher precision navigation information.

该组合导航系统是由捷联惯导系统和GPS系统构成，采用卡尔曼滤波算法完成组合导航系统的信息融合，输出高精度的导航信息。

An improved UKF method is proposed and applied to the nonlinear initial alignment of SINS on the stationary base. Simulation results illustrate that the given method has a better performance in the estimation of the azimuth error than the EKF, traditional UKF and scaled SSUKF does. Based on the dynamic error equations of SINS, the mathematics model of the IMU/GPS integrated navigation system is derived for Kalman filtering.

此外，论文还分析和研究了捷联惯性导航系统的力学方程编排和惯性仪表的误差，建立了IMU/GPS组合导航系统的状态方程和量测方程，设计和开发了用于机载SAR运动补偿的组合导航实验系统，并对设计的组合系统进行了大量的静态实验和车载实验。

The new algorithm which used in the n ew integrated navigation data fusion method comˉ bines the JTIDS relative navigation with GPS/INS/DVS integrated navi gation.

采用双联邦UKF滤波器的算法将JTIDS相对导航技术与成熟的GPS/INS/DVS组合导航技术相结合组成新的双联邦UKF组合导航数据融合算法。

Computer numeric simulation and halfˉstuff simulatio n were put on control system.

基于小扰动理论，建立简易制导航弹的扰动方程，给出简易制导航弹控制系统的数学模型，进行简易制导航弹的气动计算，结合制导控制系统的设计对制导系统参数进行优化设计，并对制导控制系统进行计算机数字仿真、半实物仿真。

The missile is believed to be fitted with combined inertial and GPS mid-course guidance, plus some form of electro-optical terminal guidance.

膺击-63使用了惯性导航系统和全球定位系统作为中段巡航导航系统，加上电视终端导航。

In the second part, introduce the problems in developing our countrys UNIS, face to the problems, bring forward the countermeasure, in this part, the article also demonstrate the feasibility to build the UNIS.

第三部分：介绍了车载城市导航信息系统的开发设计方案，主要包括系统的需求分析、系统总体设计、系统设计原则、系统开发方式的选择、系统的开发环境、系统开发关键技术阐述、导航电子地图设计、导航信息系统功能设计等。

FIX, A geographical position determined by visual reference to the surface, by reference to one or more radio NAVAIDs, by celestial plotting, or by another navigational device.

定位点，由相对于表面的目视参考决定的地理位置，也可以由参照一个或多个导航台，天文导航，或其他导航装置来决定。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。