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2nd International Conference on Frontiers of Sensors Technologies (ICFST)

作者： Xiong, Fang Luo, Chun Sichuan Modern Vocat Coll Dept Elect Informat & Technol Chengdu 610207 Sichuan Peoples R China Sichuan Tianyi Univ Dept Informat Engn Mianzhu 618200 Sichuan Peoples R China

ISBN: (纸本)9781509048601

For the node location of wireless sensor network (WSN), the apit algorithm depends on a range-free and area-related positioning strategy to be widely used. Against the target location deviation of the apit algorithm, this paper mainly implements relevant optimization and improvement. Firstly, the frequency difference is utilized to determine the distance between two WSN nodes, and the environment effect for ranging is lessened;the triangle area is adopted to judge the relationship between the destination node and the triangle, and the misjudgment is reduced;the case with less beacon nodes is discussed to estimate the target node coordinate, and the localization category is enlarged;the triangle barycenter detection is used to estimate the destination node coordinate, and the algorithm efficiency is increased. As a result, an improved apit algorithm is systematacially developed. Finally, a MATLAB simulation experiment is conducted, and its results show that the new algorithm improves both the accuracy ratio and coverage rate of the target node positioning.

关键词： wireless sensor network (WSN) node location apit algorithm frequency difference triangular area judgment coordinate estimation triangle barycenter detection

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An Enhanced Hybrid 3D Localization algorithm Based on apit and DV-Hop

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INTERNATIONAL JOURNAL OF ONLINE ENGINEERING 2017年第9期13卷 69-86页

作者： Yi, Lianjun Chen, Miaochao GanNan Normal Univ Coll Sci & Technol Ganzhou 341000 Jiangxi Peoples R China Chaohu Univ Sch Appl Math Hefei 238000 Anhui Peoples R China

Wireless sensor networks (WSN), as a new method of information collection and processing, has a wide range of applications. Since the acquired data must be bound with the location information of sensor nodes, the sensor localization is one of the supporting technologies of wireless sensor networks. However, the common localization algorithms, such as apit algorithm and DV-Hop algorithm, have the following problems: 1) the low localization accuracy of beacon nodes;2) the low coverage rate in sparse environment. In this paper, we combine apit algorithm and DV-Hop algorithm to design an enhanced hybrid 3D localization algorithm, which can improve the localization accuracy with a high coverage rate. The proposed hybrid algorithm can reduce the triangles in the triangle interior point test (PIT) and select good triangles to improve the localization accuracy of the beacon nodes in dense environments in dense environments. In addition, the algorithm can combine the advantages of apit algorithm and DV-Hop algorithm localization algorithm to calculate the unknown node coordinates, and the location coverage of the beacon nodes in sparse environment can also be improved. Simulation results show that the proposed hybrid algorithm can effectively improve the localization accuracy of beacon nodes in the dense environment and the location coverage of beacon nodes in sparse environment.

关键词： Hybrid 3D location algorithm apit algorithm DV-Hop algorithm

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Research of R-A Hybrid Localization algorithm in Wireless Sensor Network

Research of R-A Hybrid Localization Algorithm in Wireless Se...

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2015 International Conference on Simulation, Modelling and Mathematical Statistics(SMMS 2015)

作者： Li-jun LIU Ya-chun WAN Institute of Information Science and Engineering Shenyang University of Technology

The research of positioning algorithm is an important work in wireless sensor *** In general the positioning algorithm of wireless sensor network can be divided into the positioning algorithm based on range and *** paper adopts R-A hybrid localization algorithm combining with the advantages and disadvantages of weighted maximum likelihood estimation algorithm based on RSSI and apit *** the complementary characteristics of the localization algorithm based on range and range-free to complement each other and the positioning error of unknown nodes is reduced effectively.

关键词： Wireless sensor network Maximum likelihood estimation algorithm apit algorithm

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Improvement and Simulation for a Localization Based on apit

Improvement and Simulation for a Localization Based on APIT

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International Conference on Computer Technology and Development

作者： Feng Xiu-fang Qi Hui-bo Taiyuan Univ Technol Taiyuan Peoples R China

ISBN: (纸本)9780769538921

at present, many algorithms are presented, and apit algorithm (Approximate Point-in-triangulation Test) is a kind of range-free localization, which has a relatively high precision and stable performance. However, the coverage rate of apit algorithm is somewhat poor. With regards to this, this paper proposes an improved method which can convert those unknown nodes that can be located firstly to new anchor nodes, and then to participate in the next localization. Meanwhile, a localization method based on two anchor nodes and regional estimate method are proposed. Simulation results prove its validity.

关键词： wireless sensor network node localization apit algorithm localization based on two anchor nodes

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