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Energy-efficient target tracking method

A target tracking and energy-efficient technology, applied in the field of wireless networks, to achieve the effects of optimized bandwidth allocation, high tracking accuracy, and extended life cycle

Inactive Publication Date: 2010-11-17
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] After searching the existing technologies, it is found that most of the existing wireless sensor network target tracking technologies are based on uniform grid sensor networks, and the information transmission bandwidth of each sensor node is evenly distributed and fixed.

Method used

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Embodiment Construction

[0027] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0028] This embodiment includes the following steps:

[0029] Step 100, the activated sensor nodes are dynamically clustered, and each node is determined to become a cluster head node or a cluster member; specifically, the following steps are included:

[0030] Step 101. When a target enters the area of ​​interest, the sensors around the point where the target is located are activated. At this time, clustering starts, and each node broadcasts its own remaining energy E r ;

[0031] Step 102, each node calculates the average distance from other nodes within the clustering range to its own node:

[0032]

[003...

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Abstract

An energy-efficient target tracking method belongs to the technical field of wireless networks and comprises the following steps: firstly, carrying out dynamic sensor clustering on the node to be activated to determine the cluster head node and the cluster member nodes and simultaneously generating observation information; secondly, transmitting the observation information to the cluster head node after the activated node quantizes the observation information; finally carrying out target state forecasting and estimation on the cluster head node according to the quantized observation information to generate the state estimated value of the target at the current moment; and simultaneously optimally determining the bandwidth allocation of each cluster member node and carrying out bandwidth feedback and user query response operation. Data are quantitatively transferred between the dynamic sensor clusters, the cluster members and the cluster head in the network and the optimized bandwidth allocation strategy is adopted, thus further saving the energy for information transfer and improving the tracking precision, lengthening the life cycle of the whole network and giving play to the advantage that the wireless sensor network is used for target tracking to a greater extent.

Description

technical field [0001] The invention relates to a method in the field of wireless network technology, in particular to an energy efficient target tracking method for a wireless sensor network. Background technique [0002] With the development of computer network, wireless communication and micro-miniature system, the wireless sensor network which combines the above three technologies emerges as the times require. Wireless sensor network brings a new mode of information acquisition and processing, which will profoundly affect the future development of information technology. Target tracking is the most representative and challenging application of wireless sensor networks. The most representative application scenarios are military, environmental monitoring, medical and health, industrial automation, public safety, etc. [0003] The miniature sensor nodes of wireless sensor networks are generally powered by batteries, which makes a major feature of wireless sensor networks t...

Claims

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Application Information

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IPC IPC(8): H04W28/20H04W52/04H04W84/18G01S5/02
CPCY02B60/50
Inventor 周彦李建勋刘浏
Owner SHANGHAI JIAO TONG UNIV
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