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Distributed wireless sensor network three-dimensional multi-dimensional scaling (MDS) location method

A wireless sensor and network three-dimensional technology, applied in wireless communication, network topology, electrical components, etc., can solve problems that are not applicable to large-scale networks

Inactive Publication Date: 2015-09-09
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0004] The classic MDS algorithm needs to be carried out when the network is fully connected. It is a centralized positioning method and is not suitable for large-scale networks.

Method used

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  • Distributed wireless sensor network three-dimensional multi-dimensional scaling (MDS) location method
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  • Distributed wireless sensor network three-dimensional multi-dimensional scaling (MDS) location method

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with accompanying drawing.

[0036] The distributed wireless sensor network 3D MDS positioning algorithm includes the following steps:

[0037] Step 1: Cluster the entire network based on anchor nodes

[0038] refer to figure 1 , the anchor nodes in the network send broadcast packets to all unknown nodes in a flooding manner, and each unknown node records the anchor node closest to itself, and joins the cluster with the anchor node as the cluster head.

[0039] Step 2: Calculation of local coordinates of nodes in the cluster

[0040] After all the nodes in the network are clustered based on the anchor nodes, the local coordinates of the nodes in a single cluster are calculated. Specifically, firstly, the dissimilarity matrix should be established according to the mutual distance or hop information among all nodes in each cluster. Then through the classical MDS algorithm, the relative coordinates of...

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Abstract

The invention relates to the field of wireless sensor networks, more particularly to a distributed wireless sensor network three-dimensional multi-dimensional scaling (MDS) location method. According to the method, firstly, a configured and optimized anchor node is used as a cluster head so as to cluster nodes in the whole network; then a relative coordinate graph of a cluster is established through MDS in each cluster; next, relative coordinates of all clusters are fused according to weight size among all clusters, so as to form a relative coordinate graph of the whole network; and finally, according to the relative coordinate graph of the whole network, an absolute coordinate graph of the whole network is obtained through a coordinate normalization method. The method has high data accuracy and good stability, furthermore, the method needs a small quantity of anchor nodes, thereby saving cost effectively.

Description

technical field [0001] The invention relates to the field of wireless sensor networks, in particular to a distributed wireless sensor network three-dimensional MDS positioning method. Background technique [0002] Location information is a natural attribute of people or objects in the physical world, and people's life activities are all related to location. In various applications of wireless sensor networks, node location technology is one of the most important supporting technologies. Only when the specific location of the sensor node is known, the data sensed by the node has practical application value. [0003] Multi-dimensional scaling analysis (Multi-Dimensional Scaling, MDS) is a multivariate statistical analysis technique in modern statistics, which is widely used in market research, political fields, medical fields and other fields. The essence of the MDS algorithm is to measure the dissimilarity (similarity) of several target analysis information objects from a m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00H04W40/32H04W84/18
CPCH04W64/003H04W40/32H04W84/18
Inventor 樊谨张宝慧仇建郭鸿杰胡译丹戴国骏
Owner HANGZHOU DIANZI UNIV
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