本文選題：車輛盲區(qū)定位　切入點(diǎn)：全球?qū)Ш叫l(wèi)星系統(tǒng)　出處：《南京郵電大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：盲區(qū)中的車輛精確定位既是當(dāng)前車聯(lián)網(wǎng)中的研究熱點(diǎn),同時也是一大難題。全球?qū)Ш叫l(wèi)星系統(tǒng)(GNSS,Global Navigation Satellite System)具備全球性、高精度等優(yōu)點(diǎn),但是GNSS信號有時會被遮擋,因此無法應(yīng)用于盲區(qū)定位。慣性導(dǎo)航系統(tǒng)(INS,Inertial Navigation System)具有自主性、不怕外界干擾等優(yōu)點(diǎn),但是INS的定位誤差會隨著時間而積累,因此無法用于長時間的盲區(qū)定位。基于此,本文通過分析一種現(xiàn)有的簡單實(shí)用的車輛盲區(qū)自主定位技術(shù),并結(jié)合地圖匹配和修正算法來解決導(dǎo)航系統(tǒng)中的誤差累積問題,主要工作如下:1、分析一種現(xiàn)有的簡單實(shí)用的自主定位技術(shù)VSYR(Vehicle SpeedYaw Rate),分別建立了簡易和復(fù)雜兩種數(shù)學(xué)模型進(jìn)行研究,理論分析和仿真結(jié)果表明,由于車輛傳感器參數(shù)不夠精確,VSYR和INS一樣存在誤差積累的問題;2、研究一種利用地圖匹配修正VSYR的車輛傳感器參數(shù)的技術(shù)。首先通過VSYR進(jìn)行定位,然后通過地圖匹配修正VSYR的定位點(diǎn),通過修正后的定位點(diǎn)修正車輛傳感器的參數(shù)。仿真結(jié)果表明此技術(shù)可以有效緩解VSYR誤差積累的問題;3、研究一種在GNSS可見的情況下修正VSYR的車輛傳感器參數(shù)的技術(shù)。此技術(shù)在GNSS可見的情況下,分別使用VSYR和GNSS進(jìn)行定位,然后使用地圖匹配修正GNSS的定位點(diǎn),通過修正后的GNSS定位點(diǎn)修正車輛傳感器的參數(shù)。仿真結(jié)果表明此技術(shù)可以有效緩解VSYR誤差累積的問題。
[Abstract]:The accurate positioning of vehicles in blind area is not only a hot spot in the current vehicle networking, but also a difficult problem. GNSS Global Navigation Satellite system has the advantages of global and high precision, but the GNSS signal is sometimes blocked. The inertial Navigation system has the advantages of autonomy and non-interference, but the positioning error of INS accumulates with time, so it can not be used in blind area location for a long time. In this paper, we analyze a simple and practical autonomous location technology for vehicle blind area, and combine map matching and correction algorithm to solve the problem of error accumulation in navigation system. The main work is as follows: 1, analyzing a simple and practical autonomous positioning technology, VSYR(Vehicle SpeedYaw Rate1. Two simple and complex mathematical models are established for study. The theoretical analysis and simulation results show that, Because the vehicle sensor parameters are not accurate enough, VSYR and INS have the same problem of error accumulation. 2. This paper studies a technique of modifying VSYR sensor parameters by map matching. Firstly, the location of VSYR is carried out by VSYR. Then the location of VSYR is modified by map matching. The simulation results show that this technique can effectively alleviate the problem of VSYR error accumulation. A technique for modifying the vehicle sensor parameters of VSYR under the visible condition of GNSS is studied. This technique is visible to GNSS, VSYR and GNSS are used for location, then map matching is used to modify the location points of GNSS, and the parameters of vehicle sensors are corrected by modified GNSS positioning points. The simulation results show that this technique can effectively alleviate the problem of VSYR error accumulation.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U495

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 丁承君;李根;苑光明;申敏;崔超;;面向消防、救援、治安的無盲區(qū)定位系統(tǒng)的研究[J];天津工業(yè)大學(xué)學(xué)報;2014年01期

2 周穎,程蔭杭;基于曲線擬合的地圖匹配算法[J];交通運(yùn)輸系統(tǒng)工程與信息;2004年02期

相關(guān)碩士學(xué)位論文 前1條

1 李云潔;汽車導(dǎo)航系統(tǒng)中地圖匹配算法的研究與實(shí)現(xiàn)[D];吉林大學(xué);2006年

，

本文編號：1572856