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Unmanned aerial vehicle optimum relaying location positioning method and system

A positioning method and unmanned aerial vehicle technology, applied in the field of wireless communication, can solve problems such as the inability to quickly establish a transmission link, the inability to guarantee signal quality and transmission effect, etc., and achieve the effect of accurate judgment of the optimal position and high reconstruction accuracy

Active Publication Date: 2017-02-01
SHANGHAI JIAO TONG UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention does not optimize the relay position of the UAV in the prior art, so the quality and transmission effect of the signal cannot be guaranteed, and it cannot be applied to the rapid establishment of the transmission link in an emergency scene, etc., and proposes a UAV The optimal relay position positioning method and system, the present invention can quickly and automatically find the optimal relay position of the UAV in three-dimensional space, forward signals between two points in space, and can ensure signal quality in a dynamic environment

Method used

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  • Unmanned aerial vehicle optimum relaying location positioning method and system
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  • Unmanned aerial vehicle optimum relaying location positioning method and system

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Embodiment 1

[0040] The scenario of this example is as figure 2 As shown, in the fire fighting application of the fire truck, the camera on the top of the fire truck ladder needs to wirelessly transmit the video information to the command vehicle. However, the penetration of wireless signals is poor. If there is a barrier between the two ends of the transceiver, such as a building, the video signal cannot be directly transmitted, and a mobile relay node is required for forwarding. In fire-fighting emergency applications, it is necessary for the mobile relay to automatically request a location without taking up additional manpower; quickly establish forwarding to ensure video transmission; and adapt to dynamic environments.

[0041] The UAV optimal relay location positioning method in this embodiment is as follows: figure 1 shown, including the following steps:

[0042] 1) Establish and initialize the link quality matrix. Such as figure 2 As shown, o(0,0,0) is the origin of the space...

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Abstract

The invention discloses an unmanned aerial vehicle optimum relaying location positioning method and system for an unmanned aerial vehicle in the field of wireless communication. The method comprises the steps of establishing a link quality matrix for the unmanned aerial vehicle in a three-dimensional space; calculating a candidate optimum relaying location from the link quality matrix, wherein the unmanned aerial vehicle flies to the candidate optimum relaying location according to a shortest path; in a flying process, continuously communicating with a sending end and a receiving end, sampling to obtain the link quality; updating the whole link quality matrix through a matrix recovery method each time when new sample point data is obtained; and finishing positioning when the current location of the unmanned aerial vehicle is the optimum relaying location, otherwise reselecting the candidate optimum relaying location from the updated link quality matrix, updating the path and flying to the new optimum relaying location. According to the method and the system, the optimum relaying location of the unmanned aerial vehicle can be searched in the three-dimensional space rapidly and automatically to transmit signals between two points in the space, barriers and dynamic environments of the space can be adapted automatically, and the signal quality is ensured.

Description

technical field [0001] The present invention relates to a technology in the field of wireless communication, in particular to a method and system for locating an optimal relay position of an unmanned aerial vehicle. Background technique [0002] In a mobile communication system with relay nodes, in order to ensure the successful transmission of data from the sender to the receiver and optimize the quality of transmission, a mobile relay node is often used to independently find the optimal location and forward the data. UAVs move freely in three-dimensional space, which is one of the conventional means of relay nodes. However, existing technologies, such as camera technology, are still unable to enable UAVs to accurately determine the optimal relay position in a dynamic environment. Contents of the invention [0003] The present invention does not optimize the relay position of the UAV in the prior art, so the quality and transmission effect of the signal cannot be guarante...

Claims

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Application Information

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IPC IPC(8): H04B7/185H04W24/02H04W64/00
CPCH04B7/18504H04W24/02H04W64/00
Inventor 孔令和谢尧吴帆曹翼丰刘小洋陈贵海
Owner SHANGHAI JIAO TONG UNIV
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