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Music-Based Positioning Aided By Dead Reckoning

a technology of dead reckoning and music, applied in the field of mobile electronic systems, can solve the problems of inability to perform mp sporadically, inability to accurately predict the position of the music, etc., to achieve the effect of improving the accuracy of dead reckoning, improving the temporal coverage of music-based positioning, and extending the temporal coverag

Inactive Publication Date: 2014-12-18
HANGZHOU HAICUN INFORMATION TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a new technology called MP-DR that combines music-based positioning and dead reckoning. MP-DR has the benefits of both methods, with accurate positioning and periodic calibrations. However, MP can only be performed sporadically, so the text suggests that DR should be used to extend the coverage of MP. This technology is expected to provide more reliable and accurate positioning, even in environments where there are no musical segments available.

Problems solved by technology

However, because most musical segments are not suitable for positioning, MP can be performed only sporadically.
On the other hand, DR suffers from accumulation of errors.
After calibrating its location at a reference point, although DR initially has a small error, this error grows rapidly and becomes unacceptable after a mobile user walks for more than one minute or so.

Method used

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  • Music-Based Positioning Aided By Dead Reckoning
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  • Music-Based Positioning Aided By Dead Reckoning

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Embodiment Construction

[0025]Those of ordinary skills in the art will realize that the following description of the present invention is illustrative only and is not intended to be in any way limiting. Other embodiments of the invention will readily suggest themselves to such skilled persons from an examination of the within disclosure.

[0026]As used herein, a “location” refers to a geographic area with a lower resolution. Because it has a low accuracy, a geographic area identified by dead reckoning (DR) is generally referred to as a location. Accordingly, the process of identifying a geographic area by DR is referred to as localization. A “position” refers to a geographic area with a higher resolution. Because it has a high accuracy, a geographic area identified by acoustic positioning (AP) or music-based positioning (MP) is generally referred to as a position. Accordingly, the process of identifying a geographic area by AP or MP is referred to as positioning.

[0027]In this specification, “human consumable...

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Abstract

Music-based positioning (MP) provides positioning service only sporadically and therefore is not suitable for indoor positioning. The present invention discloses system and method for music-based positioning aided by dead reckoning (MP-DR). At each signature burst (i.e. a highly unique short musical segment suitable for positioning), musical sounds are used for positioning. Between signature bursts, positioning is performed by dead reckoning (DR). MP-DR is an ideal combination of MP and DR: DR extends temporal coverage for MP, while MP provides the much needed periodic calibrations for DR.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority of a provisional application entitled “Music-Based Positioning Aided By Dead Reckoning”, Ser. No. 61 / 835,527, filed Jun. 14, 2013.BACKGROUND[0002]1. Technical Field of the Invention[0003]The present invention relates to the field of mobile electronic system, and more particularly to indoor positioning using human consumable sounds such as music.[0004]2. Prior Arts[0005]Sound has been suggested as a medium for positioning. For positioning in a large venue like a shopping mall or a supermarket, an important metric is the range of the sound. To limit the number of sound sources (e.g. loudspeakers), the sound used for positioning preferably has a long range.[0006]Ultrasound, although widely used for ranging, fails in this aspect. Ultrasound suffers from severe attenuation when transmitted in air. For a distance of 100 meters, the transmission loss for a 40 kHz ultrasound is ˜140 dB (FIG. 1). In fact, ultrasoun...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G01C21/20
CPCG01C21/206G01C21/14G01C22/006G01S5/18G01S5/26G01S5/30G01C21/1652
Inventor ZHANG, GUOBIAOWANG, BRUCE BING
Owner HANGZHOU HAICUN INFORMATION TECH
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