本文選題：定位 + 信號(hào)到達(dá)時(shí)間差定位技術(shù)��； 參考：《北京交通大學(xué)》2017年碩士論文

【摘要】：我國煤礦條件差、管理人員安全意識(shí)比較淡薄,如果缺乏井下人員車輛的定位信息會(huì)帶來諸多不便與隱患。因此,煤礦井下人員定位的必要性日趨顯著。本人所在實(shí)習(xí)單位做的正是井下定位系統(tǒng)(其屬于室內(nèi)定位的范疇),旨在對煤礦井下人、車、物高精度實(shí)時(shí)定位,為煤礦日常管理、人員/車輛調(diào)度、搶險(xiǎn)救災(zāi)提供依據(jù),所用的無線定位技術(shù)就是信號(hào)到達(dá)時(shí)間差定位技術(shù)(TDOA)。實(shí)習(xí)單位現(xiàn)有定位系統(tǒng)存在一些需要解決的問題:一是TDOA技術(shù)所用的基站群需要選取一個(gè)主基站,將主基站的本地時(shí)間作為全局時(shí)間,但是不用人工指定而自然形成主基站的算法不夠完善;二是TDOA技術(shù)中估算時(shí)間偏差的方式只有線性插值一種,需要補(bǔ)充其他的估算方法;三是無法獲得定位系統(tǒng)中時(shí)間偏移估算的誤差。為了解決上述問題,需要利用matlab實(shí)現(xiàn)煤礦定位仿真系統(tǒng),完善自然形成主基站的算法,在仿真系統(tǒng)中實(shí)現(xiàn)多種估算時(shí)間偏移方式并比較它們的誤差。本文描述了該系統(tǒng)從需求分析到測試的流程:首先通過基于用戶角度的用例分析,確定了仿真系統(tǒng)的功能需求;然后設(shè)計(jì)并實(shí)現(xiàn)了主基站選取模塊、主從基站時(shí)間同步模塊、時(shí)間偏移估算模塊和定位計(jì)算模塊;最后對四個(gè)模塊進(jìn)行了測試。仿真系統(tǒng)運(yùn)行良好,已經(jīng)通過測試,并分析了時(shí)間偏移估算的誤差。時(shí)間偏移估算模塊添加了卡爾曼濾波以及閉環(huán)反饋控制估算方法,解決了原有系統(tǒng)估算時(shí)間偏差方式單一的問題。主基站選取模塊中通過結(jié)合PageRank改進(jìn)了不用人工指定而自然選出主基站的算法。
[Abstract]:The condition of coal mine in our country is poor, and the safety consciousness of managers is relatively weak. If the location information of underground personnel and vehicles is lacking, it will bring many inconvenience and hidden trouble.Therefore, the necessity of personnel positioning in coal mine is becoming more and more obvious.What I am working in is a downhole positioning system (which belongs to the category of indoor positioning, which aims to locate people, vehicles and objects in coal mines with high precision in real time, and to provide the basis for daily management, personnel / vehicle dispatching, emergency and disaster relief, etc.The wireless location technology used is the time difference of arrival (TDOAA) technology.There are some problems that need to be solved in the existing positioning system of the internship unit. One is that the base station group used in TDOA technology needs to select a master base station and take the local time of the main base station as the global time.However, the algorithm of forming the main base station naturally without manual assignment is not perfect. Second, linear interpolation is the only way to estimate the time deviation in TDOA technology, which needs to supplement other estimation methods.Third, the error of time offset estimation in the positioning system can not be obtained.In order to solve the above problems, it is necessary to use matlab to realize the coal mine positioning simulation system, perfect the algorithm of natural formation of the main base station, realize a variety of estimation time offset methods and compare their errors in the simulation system.This paper describes the flow of the system from requirement analysis to test: firstly, the functional requirements of the simulation system are determined by the use case analysis based on the user's perspective, and then the main base station selection module, the master-slave base station time synchronization module, is designed and implemented.Time offset estimation module and location calculation module; finally, four modules are tested.The simulation system has been tested and the error of time offset estimation has been analyzed.In the time offset estimation module, Kalman filter and closed-loop feedback control method are added to solve the problem of single time deviation in the original system.In the selection module of the main base station, the algorithm of selecting the main base station naturally without manual assignment is improved by combining with PageRank.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD76;TP391.9

【參考文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前7條

1 王慧瑩;時(shí)鐘和時(shí)間同步網(wǎng)絡(luò)的智能規(guī)劃和控制[D];北京交通大學(xué);2015年

2 賴琴;多徑環(huán)境下的TDOA定位算法研究[D];華中科技大學(xué);2015年

3 徐凱;時(shí)間同步方式及同步偏差對同步相量量測的影響研究[D];華北電力大學(xué);2015年

4 胡旦;基于TDOA的蜂窩網(wǎng)定位跟蹤算法研究[D];電子科技大學(xué);2013年

5 葉佳卉;基于TDOA的室內(nèi)定位算法設(shè)計(jì)與實(shí)現(xiàn)[D];華中科技大學(xué);2013年

6 馬靈芝;基于TDOA無線傳感定位算法的研究及應(yīng)用[D];山東大學(xué);2012年

7 胡夢云;無線傳感器網(wǎng)絡(luò)TDOA定位算法研究[D];大連海事大學(xué);2012年

，

本文編號(hào)：1761327