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A Node Location Method for Distributed Wireless Sensor Networks Based on Angle of Arrival

A wireless sensor network and node positioning technology, applied in wireless communication, network topology, electrical components, etc., can solve the unrealistic problems of equipped with a compass, increase the ability of the algorithm to adapt to the scene, avoid high prices, and ensure global convergence Effect

Active Publication Date: 2019-04-16
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, in the actual environment, there are many factors such as magnetic field interference, and it is unrealistic to equip each node in a large network with a compass

Method used

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  • A Node Location Method for Distributed Wireless Sensor Networks Based on Angle of Arrival
  • A Node Location Method for Distributed Wireless Sensor Networks Based on Angle of Arrival
  • A Node Location Method for Distributed Wireless Sensor Networks Based on Angle of Arrival

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Embodiment Construction

[0046] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0047] Such as figure 1 As shown, the node positioning method of the distributed wireless sensor network based on the angle of arrival of the present invention comprises the following steps:

[0048] Step 1, this embodiment distributes 8 sensor nodes in the 80×80 simulation area, such as figure 2 shown. Among them, the horizontal direction of the simulation area is the X axis, the vertical direction is the Y axis, the anchor node is selected as A={1,2}, the unknown node is selected as S={3,4,5,6,7,8}, set each The initial position of the unknown node.

[0049] Step 2, for each unknown node, determine the neighbor nodes of the unknown node. According to the measured arrival angle information, the distance weight is calculated, and the iteration step s...

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Abstract

The invention discloses a node localization method of a distributed wireless sensor network based on the angle of arrival. In the method, each node does not require to be equipped with a device similar to a compass to unify the orientation of a local coordinate system, so the ability of an algorithm to adapt to the scene is increased, and the method is also applicable in a complex scene where no compass can be equipped. Meanwhile, the method of the invention is linear, the calculation is simple and convenient, and has an exponential convergence property with a high convergence speed. The algorithm can ensure global convergence, which shows that the algorithm will not fall into the local optimum when an initial estimated value is selected randomly. Besides, the invention requires only two anchor nodes, and avoids high cost brought by the installation of a large number of GPSs.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, and in particular relates to a node positioning method of a distributed wireless sensor network based on an angle of arrival. Background technique [0002] In the application of large-scale wireless sensor networks and multi-robot networks, location information plays a very critical role in applications such as monitoring geographic data, target tracking, and providing communication services. [0003] In the application of large-scale wireless sensor networks and multi-robot networks, due to the limitations of node size, manufacturing cost and energy consumption, it is not practical to install global positioning devices such as GPS for all nodes, and only a few nodes may be equipped with global positioning devices. At the same time, due to the huge number of nodes and the limited computing power of nodes, it is impractical to let one node act as a computing center and obtain the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00H04W84/18
CPCH04W64/00H04W64/003H04W64/006H04W84/18
Inventor 林志赟韩廷睿
Owner ZHEJIANG UNIV
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