谁有＂车载导航系统＂的英文解说啊

Automotive navigation system 车载卫星导航系统 An automotive navigation system is a satellite navigation system designed for use in automobiles. It typically uses a GPS navigation device to acquire position data to locate the user on a road in the units map database. Using the road database, the unit can give directions to other locations along roads also in its database. Dead reckoning using distance data from sensors attached to the drivetrain, a gyroscope and an accelerometer can be used for greater reliability, as GPS signal loss and/or multipath can occur due to urban canyons or tunnels. 汽车导航系统是一种设计在汽车上使用的卫星导航系统。它通常使用GPS导航装置，以获得位置数据，在该单位的地图数据库以找出用户的一条道路，。使用道路数据库，单位可以发出指示，到其他地点沿道路也在其数据库中。航迹推测使用远程数据从传感器连接到传动系，陀螺仪和加速度计可用于更高的可靠性， GPS信号的损失可能发生于市区的峡谷或隧道。 Automotive navigation system working principle： Automotive navigation systems mainly by the Global Positioning System (GPS) and liquid crystal display (LCD-DISPLAY) two parts. Built-in GPS antenna will receive from around the Earth 24 GPS satellites in at least three by the transfer of data, resulting in the car in which the current location. Automotive navigation systems and loaded with electronic map information stored a large number of CD-ROM, through the GPS satellite signal and determine the location coordinates of this match will determine vehicle in the electronic map in the exact location. On this basis, will achieve traffic navigation, route recommendation, information, broadcasting AV / TV, and other features. Motorists only need to watch the display on the screen, to listen to the voice prompts, manipulation of the hands of the remote control to achieve the above functions, thus easier to drive. 车用导航系统工作原理： 车用导航系统主要由全球定位系统（GPS）和液晶显示器（LCD-DISPLAY）两部分构成。内置的GPS天线会接收到来自环绕地球的24颗GPS卫星中的至少3颗所传递的数据信息，由此测定汽车当前所处的位置。 车载导航仪内部装有储存大量电子地图信息的CD-ROM，通过GPS卫星信号确定的位置坐标与此相匹配，便可确定汽车在电子地图中的准确位置。 在此基础上，将会实现行车导航、路线推荐、信息查询、播放AV/TV等多种功能。驾驶者只须通过观看显示器上的画面、收听语音提示，操纵手中的遥控器即可实现上述功能，从而轻松自如地驾车。