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Global optimization positioning method based on distance measurement error correction

A ranging error and global optimization technology, which is applied in location information-based services, electrical components, wireless communication, etc., can solve the problems of large ranging error in wireless communication, many uncertain factors, high hardware cost and communication overhead, etc.

Pending Publication Date: 2020-12-29
CHINA INFOMRAITON CONSULTING & DESIGNING INST CO LTD
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AI Technical Summary

Problems solved by technology

Relatively speaking, ranging-based positioning can provide more accurate position information than distance-independent positioning, but requires higher hardware cost and communication overhead.
With the development of wireless communication technology and people's urgent needs for communication, the coverage of wireless communication in indoor environments is getting higher and higher, which promotes the continuous development and wide use of positioning technology based on distance measurement. However, the quality of wireless communication signals is greatly affected by the environment. And its propagation has unfavorable factors such as multipath effect, which leads to large errors and uncertainties in distance measurement using wireless communication, which in turn affects the accuracy of wireless positioning. Therefore, the improvement of wireless positioning accuracy is still a difficult problem to be overcome by this technology

Method used

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  • Global optimization positioning method based on distance measurement error correction
  • Global optimization positioning method based on distance measurement error correction
  • Global optimization positioning method based on distance measurement error correction

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Embodiment Construction

[0108] The present invention proposes a global optimal positioning method based on ranging error correction, which specifically includes the following steps:

[0109] Step 1. Deploy the wireless communication anchor device

[0110] Deploy the wireless communication anchor device in the scene that needs to be positioned, and select a point in the scene as the coordinate origin of the scene, the due east is the x-axis direction, and the true north is the y direction, and calculate the coordinates of each wireless communication anchor device according to the coordinate origin , recorded as {(x 1 ,y 1 ), (x 2 ,y 2 ),..., (x z ,y z ),..., (x e ,y e )}, where e is the total number of wireless communication anchor devices, (x z ,y z ) represents the coordinates of the zth wireless communication anchor device, where z∈{1, 2, ..., e}.

[0111] Step 2. Sampling the signal propagation distance and signal strength value of the wireless communication anchor device

[0112] like ...

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Abstract

The invention provides a global optimization positioning method based on distance measurement error correction. The method comprises the following steps: 1, deploying wireless communication anchor point equipment; 2, sampling a signal propagation distance and a signal intensity value of the wireless communication anchor point equipment; 3, establishing an RSSI-based distance measurement equation of each wireless communication anchor point device; 4, establishing an error equation of RSSI-based wireless ranging of each wireless communication anchor point device; 5, acquiring a wireless positioning signal; 6, converting the positioning signal into a distance signal; 7, establishing a positioning target function based on error correction; 8, obtaining positioning coordinates through positioning calculation.

Description

technical field [0001] The invention belongs to the technical field of wireless positioning, in particular to a global optimal positioning method based on ranging error correction. Background technique [0002] In recent years, the demand for location-based services has continued to grow. Accurate location information data has become an important foundation in the Internet of Things era. It can well combine people and things in the real world with rich data information in the virtual space, so that offline people and Things can also be searched, located, and connected like online information, thus breaking the boundary between the real world and the virtual world and realizing the interconnection of all things. Strong application requirements have led to the continuous development of positioning technology. During this development process, positioning algorithms are the key to improving positioning accuracy. At present, the main positioning algorithms can be divided into ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W40/20H04W64/00
CPCH04W40/20H04W64/003H04W4/02Y02D30/70
Inventor 何升强孙斌张兴晔钱东海李柯王孟禹刘淳
Owner CHINA INFOMRAITON CONSULTING & DESIGNING INST CO LTD
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