Method and system for positioning target by adaptive resolution

A high-resolution, self-adaptive technology, applied in positioning, radio wave measurement systems, instruments, etc., to achieve the effect of low system cost and system cost reduction

Inactive Publication Date: 2010-06-02
NEC (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In summary, in an environment where different positioning resolutions are required in different regions, none of the above existing positioning methods can achieve high-precision and efficient positioning while reducing deployment costs.

Method used

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  • Method and system for positioning target by adaptive resolution
  • Method and system for positioning target by adaptive resolution

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Embodiment Construction

[0043] Figure 2A A hybrid indoor positioning system according to the present invention is shown, which can provide adaptive positioning resolution for location-based services. In the measured space, two different areas are divided: "key area" and "common area". Critical areas are areas that require highly accurate (eg centimeter level) positioning, while common areas can accept lower positioning accuracy (eg meter level, room level). Ultrasonic (US) receivers are placed above critical areas for high-precision positioning, and radio frequency (RF) receivers are scattered throughout the space (either critical or common) for greater resolution positioning.

[0044] The hybrid positioning system of the present invention is designed for the following two considerations:

[0045] 1. From the perspective of application, in location-based access control, people usually have different location granularity in different regions. For example, in an area of ​​interest, a positioning t...

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Abstract

The invention provides a method and a system for positioning a target by adaptive resolution. The method comprises the following steps of: dividing a detected space into a key area and a common area; arranging a plurality of high-precision positioning signal (US) transceivers for high-precision positioning and a plurality of low-precision positioning signal (RF) transceivers for low-precision positioning according to the key area and the common area, wherein the detecting range of the low-precision positioning signal transceivers covers the detected space and the detecting range of the high-precision positioning signal transceivers only covers the key area; and determining the position of the target by integrating detecting results of the high-precision positioning signal transceivers and the low-precision positioning signal transceivers on the target by the adaptive resolution when the target moves in the detected space. By using the system, the target can be positioned according to different positioning resolutions (precision or granularity) in different areas and the cost of the system can be greatly reduced since plenty of high-precision positioning equipment is free from being used.

Description

technical field [0001] The present invention relates generally to positioning systems and position sensing, and more particularly to combining high precision positioning techniques such as ultrasonic (US) positioning with low precision positioning techniques such as radio frequency (RF) positioning to thereby Hybrid positioning systems and methods that provide adaptive positioning resolution for location-based services. Background technique [0002] Undoubtedly, location information can be used to extract the geographical relationship between the user and the environment to further understand the user's behavior. The importance of location-aware applications has made the design and implementation of systems for providing location information more and more popular and interesting, especially for indoor and urban environments. At present, in many different application scenarios, such as offices, medical institutions, mines, subways, intelligent buildings, hotels, etc., the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/00
CPCG01S5/18G01S5/14G01S5/0252G01S5/0263G01S5/0264G01S5/02525G01S5/02527
Inventor 赵军辉王永才
Owner NEC (CHINA) CO LTD
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