本文關(guān)鍵詞：可見光室內(nèi)定位技術(shù)研究　出處：《北京郵電大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

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【摘要】：目前,基于全球定位系統(tǒng)(GPS)的室外定位的技術(shù)已經(jīng)相當(dāng)成熟,基于此技術(shù)的應(yīng)用程序的成功發(fā)展刺激了室內(nèi)定位技術(shù)的開發(fā)和研究。然而,在室內(nèi)無法利用GPS技術(shù)實現(xiàn)室內(nèi)定位,原因在于GPS系統(tǒng)接收的衛(wèi)星信號非常微弱甚至無法接收。因此,需要一種可以不依賴GPS衛(wèi)星信號的新技術(shù)來實現(xiàn)室內(nèi)定位。 在現(xiàn)有室內(nèi)定位技術(shù)精度較低、無線資源消耗嚴(yán)重、系統(tǒng)實施復(fù)雜的背景下,以實驗室的項目為支撐,本文對基于可見光通信的室內(nèi)定位技術(shù)開展了研究,主要有以下三個研究重點：一、結(jié)合實際應(yīng)用情況對室內(nèi)可見光信道進(jìn)行了建模。二、基于此模型并結(jié)合光電傳感器的物理特性,對現(xiàn)有的多種定位算法進(jìn)行了仿真。在通過對比和研究之后,改進(jìn)了現(xiàn)有的定位算法。三、設(shè)計了可見光室內(nèi)定位平臺。 第一個研究重點,在傳統(tǒng)朗伯模型的理論基礎(chǔ)上建立了新的可見光通信信道模型,現(xiàn)有的信道模型是基于理想環(huán)境建立的,即發(fā)送端所在平面與接收端平面平行且相對距離一定的情況。本文針對接收端豎向變位和傾斜的情況建立了新的信道模型,更加符合實際情況。 第二個研究重點,對現(xiàn)有ID定位算法進(jìn)行了改進(jìn)。傳統(tǒng)的ID定位算法雖然抗干擾性較高,但是精度較差。本文在傳統(tǒng)ID定位算法的基礎(chǔ)上,對發(fā)送端LED的光照強度進(jìn)行了加權(quán)平均,提高了定位精度。由于利用了多個LED的相對強度,在接收端發(fā)生微小變化或收到干擾時仍然能夠保持較高的定位精度。 第三個研究重點,設(shè)計了可見光室內(nèi)定位平臺,其中包括了收發(fā)端的硬件、多光源時分復(fù)用的接入方式和通信協(xié)議。通過仿真驗證,各模塊工作良好,為可見光室內(nèi)定位系統(tǒng)的實施奠定了基礎(chǔ)。
[Abstract]:At present, the outdoor positioning technology based on GPS (Global Positioning system) has been quite mature. The successful development of application program based on this technology has stimulated the development and research of indoor positioning technology. GPS technology can not be used in indoor positioning because the satellite signal received by the GPS system is very weak or even unable to receive. A new technique that can be independent of GPS satellite signals is needed for indoor positioning. Under the background of low precision of indoor positioning technology, serious consumption of wireless resources and complex implementation of the system, the indoor positioning technology based on visible light communication is studied in this paper. There are three main research points as follows: first, the indoor visible light channel is modeled in combination with the actual application. Secondly, based on this model and combined with the physical characteristics of the photoelectric sensor. After comparison and research, the existing localization algorithms are improved. Thirdly, the visible light indoor positioning platform is designed. The first research focus is to establish a new visible light communication channel model based on the theory of the traditional Lambert model. The existing channel model is based on the ideal environment. In this paper, a new channel model is established for the vertical displacement and tilt of the receiver, which is more in line with the actual situation. The second research focus is to improve the existing ID location algorithm. Although the traditional ID location algorithm has high anti-interference, but the accuracy is poor. This paper is based on the traditional ID location algorithm. The illumination intensity of LED is weighted and the positioning accuracy is improved. The relative intensity of multiple LED is utilized. High positioning accuracy can be maintained when the receiver changes slightly or receives interference. The third research focus is to design the visible light indoor positioning platform, which includes the hardware of the transceiver, the access mode of multi-light time division multiplexing and the communication protocol. The simulation results show that the modules work well. It lays a foundation for the implementation of visible-light indoor positioning system.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN929.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 郭愛琴;郭午陽;朱利民;陸俊瑋;;多傳感器電子秤非線性補償電路的研究[J];傳感器與微系統(tǒng);2006年01期

2 文小玲;劉翠梅;易先軍;余飛;盧圣文;;鉑電阻測溫的非線性補償算法分析[J];傳感器與微系統(tǒng);2009年08期

3 任鳳娟;孫彥楷;;白光LED可見光通信及其關(guān)鍵技術(shù)研究[J];電子質(zhì)量;2010年05期

4 褚明輝;吳慶;王建;黃先;劉學(xué)彥;申德振;蔣大鵬;;白光LED極限流明效率的計算[J];發(fā)光學(xué)報;2009年01期

5 張建昆;劉博;楊宇;陳雄斌;陳弘達(dá);;一種室內(nèi)可見光通信亮度控制方法[J];光電子.激光;2011年07期

6 汪井源;徐智勇;朱勇;經(jīng)繼松;王榮;文湘益;;室內(nèi)可見光通信中噪聲與干擾的實驗與仿真分析[J];光電子.激光;2012年07期

7 林岳;葉烈武;劉文杰;呂毅軍;;二分法優(yōu)化計算LED光源相關(guān)色溫[J];光學(xué)學(xué)報;2009年10期

8 張浩;陳長纓;;可見光通信信道障礙成因分析及解決方案[J];光通信技術(shù);2012年09期

9 蘇震;梁小龍;;光敏二極管傳感器在幾個特定條件下的響應(yīng)狀態(tài)分析[J];中國傳媒大學(xué)學(xué)報(自然科學(xué)版);2012年01期

10 ;Synthesis and photoluminescence property of red phosphors LiEu_(1-x)Y_x(WO_4)_(0.5)(MoO_4)_(1.5) for white LED[J];Science in China(Series E:Technological Sciences);2009年07期

相關(guān)博士學(xué)位論文 前1條

1 諸燕平;無線傳感器網(wǎng)絡(luò)節(jié)點定位算法研究[D];南京航空航天大學(xué);2009年

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