本文選題：無線傳感網(wǎng) + 泰森多邊形　； 參考：《大連理工大學(xué)》2016年碩士論文

【摘要】：隨著無線傳感網(wǎng)技術(shù)的日益發(fā)展,大量傳統(tǒng)應(yīng)用獲得了與無線傳感網(wǎng)整合的契機(jī),其中聲源定位技術(shù)的發(fā)展最具代表性。基于傳統(tǒng)的TOA,TDOA, AOA, RSSI等聲源定位方案,衍生出了一系列新型定位方案,尤其是基于非測距信息的聲源定位方案在最近幾年取得了跨越式的發(fā)展。研究已有的聲源定位方案,發(fā)現(xiàn)該領(lǐng)域主要面臨以下幾個問題：(1)基于TOA和TDOA的定位方案大多對時間同步有較為苛刻的要求,而在大型無線傳感網(wǎng)中難以實(shí)現(xiàn)高精度的全局時間同步：(2)傳感網(wǎng)中,集中式聲源定位方案對信息的集中處理需要較高的通信代價,這對能量受限的傳感器節(jié)點(diǎn)提出了巨大的挑戰(zhàn)；(3)針對特定應(yīng)用場景制定的聲源定位方案很難擁有平臺移植性和擴(kuò)展性,復(fù)雜的外在環(huán)境對系統(tǒng)的可用性和可靠性提出了非常大的挑戰(zhàn)。本文提出了一種基于Voronoi的分布式傳感網(wǎng)聲源定位方案：DiVA(Distributed Voronoi-based Acoustic Source Localization)。DiVA將Voronoi圖對空間的覆蓋切割與TDOA定位技術(shù)相結(jié)合,首先基于非測距的空間分割獲得一塊較小的可疑區(qū)域,隨后在可疑區(qū)域中應(yīng)用TDOA位置估算方法實(shí)現(xiàn)精確目標(biāo)定位。通過仿真和實(shí)測實(shí)驗(yàn)驗(yàn)證,本文提出的DiVA方案能夠取得很好的定位效果。與傳統(tǒng)的TOA、TDOA及DSL系列定位方案相比,其定位更為精準(zhǔn),同時具備更好的系統(tǒng)魯棒性和穩(wěn)定性；在開放的室內(nèi)理想環(huán)境中,其定位誤差能達(dá)到厘米級。在更為復(fù)雜的室外自然環(huán)境中系統(tǒng)也能穩(wěn)定運(yùn)行,充分展示了DiVA對各種環(huán)境干擾的魯棒性和系統(tǒng)可靠性。
[Abstract]:With the development of wireless sensor network (WSN) technology, a large number of traditional applications have gained the opportunity of integration with WSN, among which the development of acoustic source location technology is the most representative. Based on the traditional TOAA, AOAA, RSSI and other sound source localization schemes, a series of new localization schemes have been derived, especially the sound source localization schemes based on non-ranging information have been developed by leaps and bounds in recent years. After studying the existing sound source localization schemes, it is found that the main problems in this field are as follows: (1) most of the localization schemes based on TOA and TDOA have harsh requirements for time synchronization. However, it is difficult to achieve high precision global time synchronization in large wireless sensor networks. (2) in sensor networks, the centralized processing of information requires high communication cost. This poses a great challenge to sensor nodes with limited energy. (3) it is difficult for acoustic source localization schemes to be portable and extensible for specific application scenarios. The complex external environment poses a great challenge to the availability and reliability of the system. This paper presents a Voronoi based sound source localization scheme for distributed sensor networks: Diva (distributed Voronoi-based Acoustic Source Localization) .DiVA combines Voronoi map coverage cutting with TDOA location technology. Firstly, a small suspicious area is obtained based on non-ranging space segmentation. Then TDOA position estimation method is applied to realize accurate target location in suspicious area. Simulation and experimental results show that the proposed DiVA scheme can achieve a good positioning effect. Compared with the traditional TDOA and DSL positioning schemes, the positioning scheme is more accurate and has better system robustness and stability, and the positioning error can reach centimeter level in an open indoor ideal environment. The system can also operate stably in the more complex outdoor natural environment, which fully demonstrates the robustness and reliability of DiVA to various environmental disturbances.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TP212.9;TN929.5

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本文編號：2062933