A Passive Target Location Method Based on Random Deployment of Wireless Sensor Nodes

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

Active Publication Date: 2017-01-25
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • 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 knowledge, and does not meet the requirements of free (random) deployment for wildlife protection and no prior knowledge.

Method used

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  • A Passive Target Location Method Based on Random Deployment of Wireless Sensor Nodes
  • A Passive Target Location Method Based on Random Deployment of Wireless Sensor Nodes
  • A Passive Target Location Method Based on Random Deployment of Wireless Sensor Nodes

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Embodiment

[0126] According to the technical solution of the present invention, in the Qinling Golden Monkey Protection Area, a monitoring area of ​​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 give...

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Abstract

The invention discloses a passive target positioning method for random deployment of wireless sensor nodes, which specifically includes the following steps: Step 1: Deploy sensor nodes and base stations in the monitoring area; Step 2: Collect RSS values ​​without interference before monitoring; Step 3: RSS value collection and classification in the monitoring stage; Step 4: Since the nodes in the monitoring area are randomly deployed, in order to accurately locate the target location, it is first necessary to determine the location of the link interfered by the target in the monitoring area, that is, to form The locations of the nodes of these interfered links; Step 5: Determination of target locations in the monitoring area. The method of the present invention can be performed without prior knowledge. In addition, the method does not require grid division, thereby avoiding the shortcomings of grid size affecting positioning accuracy in positioning methods based on grid division.

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 randomly deployed. 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 integr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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