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A two-way ranging method and system

A two-way ranging and distance technology, used in radio wave measurement systems, measurement devices, and radio wave reflection/re-radiation, etc., can solve problems such as large ranging errors and inaccurate positioning results, to extend the life cycle, reduce Ranging time and power consumption, the effect of reducing the number of mutual ranging

Active Publication Date: 2018-07-27
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a two-way ranging method and system to solve the problems existing in the prior art that are easily affected by network synchronization accuracy, resulting in large ranging errors and inaccurate positioning results

Method used

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  • A two-way ranging method and system
  • A two-way ranging method and system
  • A two-way ranging method and system

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Experimental program
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Embodiment 1

[0055] see figure 1 As shown, a two-way ranging method provided by an embodiment of the present invention includes:

[0056] Step 101: after networking, obtain the sink node, cluster head node and node in the cluster in the network;

[0057] Step 102: Obtain the distance between the cluster head nodes, the distance between the cluster head node and the sink node, the distance between the entire cluster nodes in the cluster, and the distance between two random nodes in each cluster and the sink node in each cluster using ultra-wideband technology. distance between nodes;

[0058] Step 103: The sink node obtains the distance between the cluster head nodes, the distance between the cluster head node and the sink node, the distance between the entire cluster nodes in the cluster, and two random clusters in each cluster The distance between the inner node and the sink node is used to obtain the positions of the sink node, the cluster head node, and the nodes in the cluster.

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Embodiment 2

[0100] The present invention also provides a specific implementation of a two-way ranging system. Since the two-way ranging system provided by the present invention corresponds to the specific implementation of the aforementioned two-way ranging method, the two-way ranging system can implement the above-mentioned method. The purpose of the present invention is achieved by the process steps in the above, so the explanations in the specific implementation of the above-mentioned two-way ranging method are also applicable to the specific implementation of the two-way ranging system provided by the present invention, in the following specific embodiments of the present invention Will not repeat them.

[0101] Such as figure 2 As shown, the embodiment of the present invention also provides a two-way ranging system, including: a convergence node, a cluster head node, and an intra-cluster node;

[0102] The cluster head node is used to obtain the distance between other cluster head ...

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Abstract

The invention provides a bidirectional ranging method and system, the influence of network time synchronization error on a ranging result can be reduced, and the accuracy of a positioning result is improved. The method comprises a step of obtaining sink nodes, cluster head nodes and intra-cluster nodes in a network after networking, a step of using the ultra wideband technology to obtain the distances between the cluster head nodes, the distances between the cluster head nodes and the sink nodes, the distance between whole cluster nodes in a cluster, and the distances between two random intra-cluster nodes in each cluster and the sink nodes, and a step of obtaining the positions of the sink nodes, the cluster head nodes and the intra-cluster nodes according to the distances between the cluster head nodes, the distances between the cluster head nodes and the sink nodes, the distance between whole cluster nodes in a cluster, and the distances between two random intra-cluster nodes in each cluster and the sink nodes. The invention is applicable to the technical field of wireless sensor network positioning.

Description

technical field [0001] The invention relates to the technical field of wireless sensor network positioning, in particular to a two-way ranging method and system. Background technique [0002] Wireless Sensor Networks (WSN), as a recent information acquisition and processing technology, can realize complex large-scale monitoring and tracking tasks in a wide range of application fields, and the network (WSN for short "network") itself Positioning is the foundation of most applications. [0003] For most applications, the sensed data is meaningless without knowing the sensor location. The sensor node must know its own position in order to specify "where a specific event has occurred in what position or area", so as to realize the positioning and tracking of external targets. On the other hand, knowing the location information of sensor nodes can also improve routing efficiency, provide a namespace for the network, report the coverage quality of the network to the deployer, re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/74G01S5/02
CPCG01S5/02G01S13/74
Inventor 张晓彤麻付强白红英徐金梧万亚东王仕达刘方捷李林林王鹏
Owner UNIV OF SCI & TECH BEIJING