Self-adaptive localization method, equipment and system adopting TOA and RSS fusion mode

An adaptive, TOA technology, applied in positioning, radio wave measurement system, service based on location information, etc., can solve the problems of small coverage, movement of unreliable link targets, high positioning failure, etc., and achieve large coverage area expansion , reduced computational intensity, and better positioning accuracy

Inactive Publication Date: 2009-09-09
NEC (CHINA) CO LTD
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Problems solved by technology

[0006] (1) The method based on RSS can provide large coverage, but the positioning accuracy is low;
[0007] (2) TOA-based methods can provide high-accuracy solutions, but the coverage is small
On the other hand, conventional localization algorithms such as trian

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  • Self-adaptive localization method, equipment and system adopting TOA and RSS fusion mode
  • Self-adaptive localization method, equipment and system adopting TOA and RSS fusion mode
  • Self-adaptive localization method, equipment and system adopting TOA and RSS fusion mode

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Embodiment Construction

[0044] figure 1 is a block diagram showing the overall configuration of the adaptive positioning system 100 according to the present invention. As shown in the figure, as an example, the system 100 is composed of a target device 102 carried by a moving target 110 , a detection device 120 as an observer, and a central information server 111 , wherein the central information server 111 includes the adaptive positioning device 101 . As an example, in figure 1 The detection device 120 in has a stand-alone positioner (POD) structure, that is, includes a head device 103 and a leaf device 104 . Regarding the detailed description of POD, another application entitled "Independent Positioner and Autonomous Ultrasonic Positioning System and Method" submitted by the applicant of this application (application date: January 29, 2008, application number No. 200810006317.0) described in , which application is hereby incorporated by reference in its entirety for all purposes. Of course, the...

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Abstract

The invention provides a self-adaptive localization method, equipment and system which adopt a TOA and RSS fusion mode. The self-adaptive equipment comprises an observation result collector for collecting results of the TOA and the RSS of signals sent by an object, a TOA result counter for determining the number of the TOA results, and a position counter for selectively calculating the strategy of the position of the object and calculating the position of the object according to the selected strategy. The equipment can select the position strategy in a self-adaptive mode according to the number of the TOA results. Compared with the prior art, the self-adaptive method, equipment and system have the characteristics of self-adaptivity, reliability, accuracy, expandability, low cost, and the like.

Description

technical field [0001] The present invention generally relates to target positioning strategies, and more specifically, the present invention provides a robust and accurate adaptive positioning method, device and system for integrating positioning strategies based on RSS (received signal strength) and based on TOA ( The advantage of the positioning strategy of arrival time). Background technique [0002] The continuous strengthening of digitalization promotes the development of computer networks towards the direction of "universal information society". Various services responsive to the location of entities can be provided through mobile devices, tiny wireless identification tags (tags), sensor networks, and the like. Location information is very important in people's daily life. NTTSoCoMo's survey shows that 85% of the world's information is related to location, and 5% of data services on mobile systems are related to location. Location-based service (Location based serv...

Claims

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Application Information

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IPC IPC(8): G01S5/00G01S1/00H04W4/02G01S5/02G01S5/30
Inventor 赵军辉王永才
Owner NEC (CHINA) CO LTD
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