UWB室內(nèi)定位多標(biāo)簽防碰撞算法研究
[Abstract]:With the emergence of artificial intelligence, unmanned industry and other emerging industries, indoor positioning technology has been paid more and more attention. Indoor positioning technology refers to the location of the target object or the tracking of the moving path of the target object in the indoor environment. This technology is mainly used in the combination of base station, wireless communication technology and other technologies, thus forming an indoor positioning system suitable for high precision positioning requirements. The research content of this paper is the indoor real-time positioning technology based on UWB multi-label anti-collision. This paper first describes the research status of UWB indoor positioning technology at home and abroad, and recognizes the need of UWB indoor positioning technology for anti-collision of multi-positioning tags. The research of multi-label anti-collision algorithm based on UWB indoor positioning system is made clear in this paper. The composition, location algorithm and clock synchronization model of UWB positioning system are introduced in detail. Then, two kinds of label anti-collision algorithms, binary tree algorithm and ALOHA algorithm, are analyzed in detail. The mathematical models of the two kinds of algorithms are described in detail. The pure ALOHA, slot ALOHA, frame slot ALOHA and the dynamic frame slot ALOHA are systematically analyzed, and the algorithms are compared. The idea of applying dynamic frame slot ALOHA algorithm to UWB indoor positioning system is presented. Based on the dynamic frame slot ALOHA algorithm, this paper analyzes the tag estimation algorithm involved in the implementation of dynamic frame in detail, and introduces and compares the Low bound,Schoute,Vogt and Bayesian estimation algorithms through simulation. The realization probability distribution function of Bayesian tag estimation algorithm is described in detail. Bayesian tag estimation algorithm based on UWB dynamic frame slot ALOHA algorithm is studied. According to the system composition of UWB indoor positioning system and the principle of location realization, an improved anti-collision algorithm based on UWB indoor multi-label positioning system is studied and analyzed. In the multi-label positioning system, because of the large number of localization tags, it is convenient to test the performance of multi-label. At the end of the paper, the multi-label positioning system is tested by using the successful recognition rate test, and the circle probability error algorithm R95 based on UWB indoor positioning system is proposed to analyze the positioning accuracy of multi-label at the same time. Through the simulation based on MATLAB and the successful recognition rate and precision test of the positioning system, the high precision performance of UWB indoor positioning system and the advantage of dynamic frame slot ALOHA based on Bayesian tag estimation algorithm are demonstrated. The purpose of this paper is to provide a feasible reference for the anti-collision of UWB indoor multi-label positioning system, so as to realize the multi-label anti-collision capability of the positioning system.
【學(xué)位授予單位】:海南大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TN925
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