Passive target localization method for wireless sensor node random deployment

A technology of wireless sensors and sensor nodes, applied in wireless communication, network topology, electrical components, etc., can solve problems such as non-conformance, prior knowledge required, and no prior knowledge

Active Publication Date: 2014-03-12
NORTHWEST UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] 3) No prior knowledge
The disadvantage of this method is that it requires node rule deployment, requires prior kn

Method used

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  • Passive target localization method for wireless sensor node random deployment
  • Passive target localization method for wireless sensor node random deployment
  • Passive target localization method for wireless sensor node random deployment

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Embodiment

[0126] According to the technical solution of the present invention, in the Qinling Golden Monkey Reserve, a monitoring area with a×b=100m×100m is selected, a base station is deployed at a distance of 50m from the border of the monitoring area, and the base station is connected to a PC. The experiment selects a target with a height of 1.75 meters, and conducts a passive positioning test on it. Under this monitoring area, the number of nodes N is increased from 30 to 300 with a step size of 15, and all nodes are numbered from 1-N, and a total of 18 real-scene target positioning experiments are carried out. In each experiment, N nodes are randomly deployed in the monitoring area, and each node position C i At the time of initialization, the vertical and horizontal coordinate ranges are between 0 and 100m, and at the same time, the transmit power of each node P i The value is randomly given at 0~-20dBm, and the path loss is therefore γ i The value is randomly given from 2 to 6....

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Abstract

The invention discloses a passive target localization method for wireless sensor node random deployment. The passive target localization method includes the steps of first, deploying sensor nodes and base stations in a monitored area; second, acquiring RSS (Received Signal Strength) values on the condition without interference before monitoring; third, acquiring and classifying the RSS values at the monitoring stage; fourth, determining locations of links interfered by targets in the monitored area, namely locations of nodes constituting the interfered links, for accurately positioning the target location on the condition that the nodes in the monitored area are in random deployment; fifth, determining the target location in the monitored area. The passive target localization method can be implemented without priori knowledge. As meshing is omitted, the defect that location precision is affected by size of meshes in meshing-based localization methods is avoided.

Description

technical field [0001] The invention belongs to the field of wireless network applications, and in particular relates to a passive target positioning method in which wireless sensor nodes are deployed immediately. Background technique [0002] Wild animals have important ecological status and ecological functions in nature, and are one of the indispensable links in the entire ecological chain. How to effectively monitor and protect them is particularly important. Traditional wild animal protection uses manual recording and statistics. Therefore, the traditional method has many disadvantages, such as: lack of long-term and real-time performance, and also has certain difficulties and dangers. Comprehensive analysis of time, space and phenomena. The emergence of wireless sensor networks provides technical support for solving the above problems. [0003] The wireless sensor network is composed of a large number of distributed sensor nodes deployed in the monitored area. It int...

Claims

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Application Information

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IPC IPC(8): H04W64/00H04W84/18
Inventor 房鼎益王举陈晓江常俪琼邢天璋聂卫科刘晨肖云
Owner NORTHWEST UNIV
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