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Wireless sensor network target locating method and locating system without need of node self-localization

A wireless sensor, target positioning technology, applied in radio wave measurement system, transmission system, positioning and other directions, can solve the problem of complex self-positioning process, and achieve the effect of reducing the difficulty of implementation, expanding the scope of positioning applications, and improving positioning accuracy

Inactive Publication Date: 2013-07-10
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: to construct a wireless sensor network target positioning method and system exempt from node self-positioning, and to overcome the technical problem of complex self-positioning process when using wireless sensor network positioning in the prior art

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  • Wireless sensor network target locating method and locating system without need of node self-localization
  • Wireless sensor network target locating method and locating system without need of node self-localization
  • Wireless sensor network target locating method and locating system without need of node self-localization

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Embodiment Construction

[0031] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0032] Such as figure 1 As shown, the specific embodiment of the present invention is: provide a kind of wireless sensor network object localization method that exempts node self-localization, comprise the steps:

[0033] Step 100: building an electronic map, namely: establishing an electronic map of the target location area and establishing a coordinate system.

[0034] The specific implementation process is as follows: the electronic map only refers to the electronic map of the target positioning area. It can be a two-dimensional map or a three-dimensional map depending on the actual situation. formula to describe. At the same time, it is required that the electronic map can accurately, finely and comprehensively display the fixed facilities, relative position, topography and other feature information in the positioning area. The accuracy and ...

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Abstract

The invention relates to a wireless sensor network target locating method and a locating system without the need of node self-localization. The locating method includes a first step of establishing an electronic map in a target locating area, and establishing an electronic map coordinate system, a second step of setting a plurality of wireless sensor nodes, and confirming the coordinate values and positions of the wireless sensor nodes in the electronic map, a third step of enabling the wireless sensor nodes to measure RSSI values of target nodes in a target node broadcast data package, a fourth step of obtaining coordinates of the target nodes in the electronic map according to the coordinate values of the wireless sensor nodes used for measuring the RSSI values of the target nodes in the electronic map and the obtained RSSI values of the target nodes, and obtaining the locating positions of the target nodes in the electronic map according to the coordinates of the target nodes. By means of the electronic map, the wireless sensor network target locating method and the locating system without the need of the node self-localization achieve target locating under the condition of not carrying out node self-localization, improve locating precision, reduces implementing difficulty, and enlarge the locating application scope.

Description

technical field [0001] The invention relates to a wireless sensor network target positioning method and system, in particular to a wireless sensor network target positioning method and system free of node self-positioning. Background technique [0002] Wireless sensor network is a new type of networked sensing technology that integrates sensing, computing and communication technologies that was born in recent years. Target positioning is one of the main applications of wireless sensor network. The target location is estimated by using network nodes to measure and process target signals cooperatively. One of the important prerequisites for target positioning is to first determine the coordinates of the sensor nodes. The conventional idea is to estimate the node coordinates through a series of information interactions and processing processes between nodes after deploying the sensor nodes at the location site, and then based on the node coordinates and measurement data to calc...

Claims

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Application Information

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IPC IPC(8): H04W64/00H04B17/00G01S5/02
Inventor 张晓平汪洋
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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