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Distributed sensor self-location system and location method based on node cluster

A distributed sensor and node cluster technology, applied in positioning, radio wave measurement systems, instruments, etc., can solve the problems of inability to overcome the near-far effect, limited measurement range, and low system efficiency, achieving strong scalability and low power consumption. The effect of low power consumption and low transmit power

Active Publication Date: 2015-12-09
ZHONGBEI UNIV
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Problems solved by technology

This method utilizes hydrophone, hydrophone and TOA positioning technology. The communication between the node and the base station is limited by the power of the hydrophone itself, and the measurement range is also limited. The communication between the node and the base station cannot overcome the near-far effect, which increases the Necessary power consumption, the overall system efficiency is relatively low

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  • Distributed sensor self-location system and location method based on node cluster
  • Distributed sensor self-location system and location method based on node cluster
  • Distributed sensor self-location system and location method based on node cluster

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Embodiment Construction

[0041] The detailed technical solutions of the present invention are described below in conjunction with the accompanying drawings:

[0042] like figure 1 As shown, the entire positioning system of the present invention includes a ground control center 1 , a relay buoy 2 , a positioned sensor node 3 and a base station 4 .

[0043] like figure 1 As shown in the figure, in the positioned sensor node 3 and the base station 4, the hydrophone generates the underwater acoustic signal; the hydrophone receives the underwater acoustic signal; the signal conditioning module processes the analog signal induced by the hydrophone and the positioned sensor before sampling. Filtering and other conditioning; the data acquisition module samples and encodes the analog signal output by the signal conditioning module and converts it into a digital signal for storage; the time unification module receives the timing command, timing command or calibration command from the GPS timing master station ...

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Abstract

The invention discloses a distributed sensor self-positioning system based on a node cluster and a positioning method in a large water area environment. The self-positioning system comprises a positioned sensor node, a base station, a relay float, and a ground control center. According to the self-positioning method, a cluster head is determined according to a TOA technique and the cluster is built, then an underwater sensor array coordinate is built, a minimum gradient iteration method is combined, and a local coordinate of the positioned sensor node is finally determined. The self-positioning system has the advantages of being strong in expandability, good in stability, low in power consumption, precise in positioning and high in positioning refresh rate and the like.

Description

technical field [0001] The invention belongs to the technical field of sensor positioning, and in particular relates to a self-positioning system of distributed sensors in a large water environment. Background technique [0002] In recent years, with the increasing development of terrestrial resources, resulting in the increasing scarcity of terrestrial resources and the deterioration of the ecological environment, human beings have gradually turned their strategic attention to the ocean, which occupies 70% of the earth's total area. At present, the development of marine resources in various countries is on the rise, and each country attaches great importance to the utilization, competition and protection of the marine field. According to the demand, the number of weapon effectiveness tests conducted by my country in the sea is increasing, and the problems of underwater detection and parameter testing are very prominent. In addition, the ocean is rich in various energy sour...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00G01S5/18
CPCY02D30/70
Inventor 王黎明王鉴王飞韩焱张丕壮姚金杰
Owner ZHONGBEI UNIV
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