【摘要】：隨著3G時代的到來和無線網絡的發(fā)展,基于位置的增值業(yè)務因其蘊藏的巨大的商業(yè)潛力而倍受關注。因此,基于網絡的無線定位技術成為通信領域內最為活躍和發(fā)展最為迅速的領域之一。本論文主要研究的就是基于網絡的無線定位技術。 由于室內環(huán)境復雜性的影響,手持設備和各接收機的距離估計可能存在嚴重的誤差。本課題將在分析和總結現有定位算法種類和性質的基礎上,針對復雜的室內環(huán)境和給定無線局域網的熱點配置模型的情況下,針對原MUSIC算法的缺點提出了一種改進MUSIC算法估計信號的波達方向進行室內定位,并對其原理和算法在多徑效應、相干信源和噪聲干擾下的魯棒性等方面的問題作了詳細的分析。實現對網路中的運動目標進行跟蹤,并減小測量得到的距離估計誤差并通過仿真驗證所提算法的有效性。
[Abstract]:With the advent of 3G era and the development of wireless network, location-based value-added services have attracted much attention because of their great commercial potential. Therefore, network-based wireless positioning technology has become one of the most active and rapidly developing fields in the field of communication. This paper mainly studies the wireless location technology based on network. Due to the complexity of indoor environment, there may be serious errors in the distance estimation between handheld equipment and each receiver. Based on the analysis and summary of the types and properties of the existing localization algorithms, this paper will aim at the complex indoor environment and given the hot spot configuration model of the wireless local area network (WLAN). In view of the shortcomings of the original MUSIC algorithm, an improved MUSIC algorithm is proposed to estimate the direction of arrival of the signal for indoor localization, and the principle and robustness of the algorithm under multi-path effect, coherent source and noise interference are analyzed in detail. The tracking of moving targets in the network is realized, and the measured distance estimation error is reduced, and the effectiveness of the proposed algorithm is verified by simulation.
【學位授予單位】：華東理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN92

【共引文獻】

相關碩士學位論文 前2條

1 林文鳳;陣列快速DOA估計算法研究[D];電子科技大學;2013年

2 馬永陽;基于子空間分析的DOA估計算法研究[D];浙江工業(yè)大學;2013年

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本文編號：2495372