Positioning method and system for indoor target
A positioning method and target technology, applied in the field of indoor target positioning methods and systems, can solve the problems of limiting positioning search space, changing fingerprint information, impossible positioning, etc., and achieving the effect of simple and efficient expansion and maintenance.
Active Publication Date: 2019-10-22
XIAMEN UNIV
View PDF9 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In fact, this brings two major problems. The first is maintenance. Changes in the indoor environment, such as seat walls, will change fingerprint information
Secondly, it is impossible to locate the points that have not been collected, which limits the space for positioning search
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0032] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.
[0033] 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. The present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0034] According to the positioning method for indoor targets according to an embodiment of the present invention, figure 1 A flow chart of a positioning method for an indoor target according to an embodiment of the present invention is shown. Such as figure 1 As shown, th...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a positioning method and system for an indoor target. The method comprises the following steps: acquiring indoor WiFi signals at a plurality of acquisition points; constructinga relation curve of an RSSI value and a distance d, converting the relation curve into a linear relation graph based on a curve segmentation algorithm, and determining a slope k in the linear relationgraph, the RSSI value representing an intensity value of a WiFi signal received when the distance between an acquisition point and a signal source is d; based on the slope k and the detected RSSI value of the to-be-detected target, obtaining a calculation distance between the to-be-detected target and the signal source; utilizing track information of the to-be-measured target to obtain the estimated position of the target based on PDR track plotting, wherein the track information comprises the stride frequency, stride and walking direction of the to-be-measured target; correcting the positionof the estimated position by using the calculated distance, and performing weighted least square on the estimated position and the corrected position to obtain the position information of the target.When the indoor environment changes, the distribution field and slope library of the signal intensity can be quickly reconstructed.
Description
[0001] This application claims the priority of the Chinese patent application submitted to the China Patent Office on August 1, 2019 with the application number 201910707865.4 and the title of the invention "A Method and System for Positioning Indoor Objects", the entire contents of which are incorporated by reference in this application. technical field [0002] The invention relates to the technical field of wireless signal processing, in particular to a positioning method and system for indoor targets. Background technique [0003] In recent years, with the rapid development of network wireless technology, wireless networks have basically covered all places where people do activities, providing people with convenient and fast Internet access services. At the same time, in today's society, people spend more and more time indoors. Although the satellite positioning system can provide us with accurate location services outdoors, this technology cannot be effectively realized...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/021H04W4/33G01S5/12
CPCG01S5/12H04W4/021H04W4/33
Inventor 齐洁黄祖辉孙海信张祥萱
Owner XIAMEN UNIV