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Automotive navigation system 車載衛(wèi)星導(dǎo)航系統(tǒng) 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 unit's 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. 汽車導(dǎo)航系統(tǒng)是一種設(shè)計(jì)在汽車上使用的衛(wèi)星導(dǎo)航系統(tǒng)。它通常使用GPS導(dǎo)航裝置，以獲得位置數(shù)據(jù)，在該單位的地圖數(shù)據(jù)庫(kù)以找出用戶的一條道路，。使用道路數(shù)據(jù)庫(kù)，單位可以發(fā)出指示，到其他地點(diǎn)沿道路也在其數(shù)據(jù)庫(kù)中。航跡推測(cè)使用遠(yuǎn)程數(shù)據(jù)從傳感器連接到傳動(dòng)系，陀螺儀和加速度計(jì)可用于更高的可靠性， GPS信號(hào)的損失可能發(fā)生于市區(qū)的峽谷或隧道。 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. 車用導(dǎo)航系統(tǒng)工作原理： 車用導(dǎo)航系統(tǒng)主要由全球定位系統(tǒng)（GPS）和液晶顯示器（LCD-DISPLAY）兩部分構(gòu)成。內(nèi)置的GPS天線會(huì)接收到來(lái)自環(huán)繞地球的24顆GPS衛(wèi)星中的至少3顆所傳遞的數(shù)據(jù)信息，由此測(cè)定汽車當(dāng)前所處的位置。 車載導(dǎo)航儀內(nèi)部裝有儲(chǔ)存大量電子地圖信息的CD-ROM，通過(guò)GPS衛(wèi)星信號(hào)確定的位置坐標(biāo)與此相匹配，便可確定汽車在電子地圖中的準(zhǔn)確位置。 在此基礎(chǔ)上，將會(huì)實(shí)現(xiàn)行車導(dǎo)航、路線推薦、信息查詢、播放AV/TV等多種功能。駕駛者只須通過(guò)觀看顯示器上的畫面、收聽(tīng)語(yǔ)音提示，操縱手中的遙控器即可實(shí)現(xiàn)上述功能，從而輕松自如地駕車。

回答者：jingwtren2016-08-06 00:00