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Method, system, device and storage medium for eliminating UAV positioning nlos

A UAV, initial position technology, applied in the field of communication, can solve the problems of large amount of calculation, unable to receive GPS signals, etc., to achieve the effect of accurate positioning results, simple calculation steps, and precise positioning

Active Publication Date: 2021-04-06
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The positioning of UAVs used to always rely on global satellite navigation systems, but GPS has great flaws: large errors will occur in harsh environments, and GPS signals will not be received in some remote areas.
Although this method is improved compared to the first method, it also has a relatively large amount of calculation
At the same time, the above two algorithms require at least three base stations to complete the positioning.

Method used

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  • Method, system, device and storage medium for eliminating UAV positioning nlos
  • Method, system, device and storage medium for eliminating UAV positioning nlos
  • Method, system, device and storage medium for eliminating UAV positioning nlos

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Embodiment Construction

[0046] The present invention will be described in further detail below in conjunction with specific examples, but the embodiments of the present invention are not limited thereto.

[0047] The embodiment of the present invention provides a method for eliminating NLOS of UAV positioning, the steps are as follows:

[0048] Obtain the drone's initial position, flight information and measurement values;

[0049] Identifying values ​​with non-line-of-sight errors in the measured values ​​according to the initial position of the drone and the flight information;

[0050] The actual position is obtained by eliminating the non-line-of-sight error according to the measured value with the non-line-of-sight error.

[0051] Specifically, by obtaining the measured value with non-line-of-sight error first, and then eliminating the measured value with non-line-of-sight error, the measured value can be processed more accurately, making the positioning result more accurate, and the present in...

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Abstract

The invention belongs to the field of communication technology, and in particular relates to a method, system, device and storage medium for eliminating NLOS of UAV positioning. The initial position and the flight information identify values ​​with non-line-of-sight errors in the measured values; and eliminate non-line-of-sight errors according to the measured values ​​with non-line-of-sight errors to obtain an actual position. In the embodiment of the present invention, by first obtaining the measured value with non-line-of-sight error, and then eliminating the measured value with non-line-of-sight error, the measured value can be processed more accurately, so that the positioning result is more accurate, and the present invention uses The method of eliminating non-line-of-sight errors can greatly reduce the positioning time.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a method, system, device and storage medium for eliminating NLOS of UAV positioning. Background technique [0002] In recent years, with the continuous development of UAV-related technologies, UAVs have been used in more and more fields: disaster first aid, target tracking, agriculture and even war. The positioning of UAVs used to always rely on global satellite navigation systems, but GPS has great flaws: large errors will occur in harsh environments, and GPS signals will not be received in some remote areas. . Therefore, the wireless positioning of UAVs has attracted more and more attention, and has also been studied by more and more researchers. [0003] Due to the existence of tall buildings and obstacles, the wireless signal propagates between the UAV and the reference station through refraction and reflection, thus forming a non-line-of-sight NLOS (Non-L...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/06
Inventor 相征齐庆凯任鹏
Owner XIDIAN UNIV
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