本文選題：室內(nèi)定位技術(shù) + 軌跡還原��； 參考：《西安電子科技大學(xué)》2014年碩士論文

【摘要】：隨著定位技術(shù)的發(fā)展，人們可以享受到越來越多的基于定位的服務(wù)。比如根據(jù)用戶所處的位置發(fā)送特定的廣告，根據(jù)用戶所處位置建立特定的交友圈，在特定的地理環(huán)境提供相應(yīng)的定制服務(wù)，這些服務(wù)隨著用戶對智能手機(jī)的依賴程度的增高而越發(fā)流行。室內(nèi)定位是當(dāng)前定位技術(shù)領(lǐng)域的難點(diǎn)，而且是眾多研究機(jī)構(gòu)爭相攻克的研究熱點(diǎn)，成熟的室內(nèi)定位技術(shù)具有良好的應(yīng)用前景和較強(qiáng)的應(yīng)用價值，非常具有研究意義。 本文首先分析了室內(nèi)定位技術(shù)的研究現(xiàn)狀，指出了當(dāng)前定位技術(shù)存在的優(yōu)勢和劣勢。通過對現(xiàn)有室內(nèi)定位技術(shù)工作的研究和分析，本文提出了一種以軌跡還原為基礎(chǔ)，以環(huán)境感知為輔助，通過修正點(diǎn)進(jìn)行校準(zhǔn)實(shí)現(xiàn)逐步求精的定位系統(tǒng)。該系統(tǒng)以智能手機(jī)為平臺，利用智能手機(jī)的光傳感器進(jìn)行室內(nèi)外環(huán)境的判斷。當(dāng)檢測出用戶位于室內(nèi)環(huán)境中后，利用手機(jī)的加速度傳感器和方向傳感器收集速度數(shù)據(jù)和姿態(tài)數(shù)據(jù)進(jìn)行軌跡還原。針對軌跡還原中產(chǎn)生的累積誤差，本文提出利用建筑物內(nèi)特征明顯的修正點(diǎn)對用戶運(yùn)動軌跡進(jìn)行修正以縮小軌跡誤差。為了使系統(tǒng)具有逐步求精性，系統(tǒng)利用聚類算法不斷增加修正點(diǎn)的個數(shù)，，使系統(tǒng)的定位精度不斷提高。 本文實(shí)現(xiàn)了上述室內(nèi)定位系統(tǒng)，對系統(tǒng)的各個模塊和總體定位精度分別進(jìn)行實(shí)驗(yàn)。實(shí)驗(yàn)結(jié)果顯示，系統(tǒng)的各個模塊能很好的完成本模塊的功能，綜合各個模塊后室內(nèi)定位能達(dá)到較高的精度，同時系統(tǒng)的能耗在可接受范圍內(nèi)。通過實(shí)驗(yàn)，證明了利用本文所述系統(tǒng)可以有效地實(shí)現(xiàn)室內(nèi)定位。
[Abstract]:With the development of positioning technology, people can enjoy more and more location-based services. For example, sending specific advertisements according to the location of the user, establishing a specific circle of friends according to the location of the user, and providing customized services in a specific geographical environment. These services have become more popular as users become more dependent on smartphones. Indoor positioning is a difficult point in the field of current positioning technology, and it is a hot research topic for many research institutions. The mature indoor positioning technology has good application prospect and strong application value, and it is of great significance. Firstly, this paper analyzes the research status of indoor positioning technology, and points out the advantages and disadvantages of current positioning technology. Based on the research and analysis of the existing indoor positioning technology, this paper presents a positioning system based on trajectory restoration, assisted by environmental perception, and calibrated by correction points to achieve progressive refinement. The system uses the smart phone as the platform and uses the light sensor of the smart phone to judge the indoor and outdoor environment. When the user is found in the indoor environment, the acceleration sensor and the direction sensor of the mobile phone are used to collect the velocity data and attitude data to restore the trajectory. In view of the accumulated error caused by trajectory reduction, this paper proposes to reduce the trajectory error by modifying the user's trajectory by using the correction points with obvious characteristics in the building. In order to improve the precision of the system step by step, the cluster algorithm is used to increase the number of correction points and improve the positioning accuracy of the system. In this paper, the above indoor positioning system is realized, and each module and the overall positioning accuracy of the system are tested separately. The experimental results show that each module of the system can complete the function of this module very well. After synthesizing each module, the indoor positioning can reach a higher precision, and the energy consumption of the system is within the acceptable range. Through experiments, it is proved that indoor positioning can be realized effectively by using the system described in this paper.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP311.52;TN929.53

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