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Method and device for correcting accuracy of indoor triangulation location

A technology of triangulation positioning and accuracy correction, which is applied in the field of wireless positioning and can solve problems such as triangulation positioning errors

Active Publication Date: 2019-03-29
广东理致技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For navigation technologies below this precision requirement, in some high-speed and high-demand situations, errors in triangulation positioning may occur due to inertia or data peak problems. How to efficiently remove positioning accuracy noise is a problem to be solved

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  • Method and device for correcting accuracy of indoor triangulation location
  • Method and device for correcting accuracy of indoor triangulation location
  • Method and device for correcting accuracy of indoor triangulation location

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Embodiment Construction

[0058] The concept, specific structure and technical effects of the present disclosure will be clearly and completely described below in conjunction with the embodiments and drawings, so as to fully understand the purpose, scheme and effect of the present disclosure. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0059] Such as figure 1 Shown is a flow chart of an indoor triangulation accuracy correction method according to the present disclosure, combined below figure 1 A method for correcting indoor triangulation accuracy according to an embodiment of the present disclosure will be described.

[0060] The present disclosure proposes an indoor triangulation accuracy correction method, which specifically includes the following steps:

[0061] Step 1, constructing a triangulation model through the measured node and multiple anchor nodes;

[0062] Step 2, co...

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Abstract

The invention discloses a method and device for correcting the accuracy of an indoor triangulation location. The method comprises the following steps: constructing a triangulation location model by ameasured node and a plurality of anchor nodes; correcting the accuracy of an anchor node signal received by the measured node; adjusting the anchor node signal according to the state of the measured node; normalizing, according to the Gaussian distribution, the estimated location error to obtain coordinates of the corrected anchor nodes; and performing location according to the coordinates of thecorrected anchor nodes through the triangulation location model. According to the method and device for correcting the accuracy of the indoor triangulation location, the anchor node signal is adaptively adjusted according to the state of the measured node, so the accuracy of the acquired location signal of the anchor node can be corrected accordingly whether in the moving state or the stationary state of the measured node, thereby effectively preventing the mis-location during the movement, improving the location accuracy, and ensuring the stable quality of the location service. The method anddevice has high robustness.

Description

technical field [0001] The present disclosure relates to the technical field of wireless positioning, and in particular to an indoor triangulation accuracy correction method and device. Background technique [0002] In indoor positioning and navigation technology, UWB sensors, APs, Wi-Fi and other positioning technologies are generally used. Many existing demand scenarios need to be accurately positioned below the centimeter level. Users can be positioned indoors through these anchor points, and use Wi-Fi hotspots are used for indoor positioning. Triangulation, or trilateration positioning, is the most basic way to calculate coordinates. The basic principle is to find the intersection of three circular arcs whose radii and center coordinates are known. The triangulation method is suitable for target positioning based on AOA angle measurement. The measured node and two anchor nodes can form a triangle. The distance between the two anchor nodes is known, and the angle of the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/10
CPCG01S5/021G01S5/10
Inventor 霍颖瑜钟刚邹穗萍梁欣荣
Owner 广东理致技术有限公司