Location fingerprint positioning method and device
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A fingerprint positioning and fingerprint technology, which is applied in location information-based services, electrical components, wireless communication, etc., can solve the problems of increasing the complexity of positioning algorithms and affecting real-time positioning
Inactive Publication Date: 2014-02-05
BEIJING UNIV OF POSTS & TELECOMM
View PDF8 Cites 17 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0008] However, if in a large-scale indoor environment, a large number of location fingerprints need to be collected according to the above-mentioned positioning technology based on location fingerprints that have nothing to do with ranging, the fingerprint map formed by a large number of location fingerprints will increase the complexity of the positioning algorithm, affecting real-time positioning
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 more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0056] In order to solve the above problems, an embodiment of the present invention provides a location fingerprint positioning method, such as figure 1 As shown, the method includes:
[0057]S1: In the area to be positioned, perform reference point calibration and collect signal strength samples of the scaled reference points;
[0058] S2: Detect and divide the area to be located into multiple sub-areas according to the MAC address list of the wireless access point and the maximum radius of the coverage area of the wireless access point, and detect the MAC address list of all wireless access points in each sub-area;
[0059] S3: According to the signal strength samples measured at the target point, match the MAC address list of the wireless access point measured at the target point with the MAC address list of the wireless access point in each sub-area, and determine the final position of the target point according to the matching result .
[0060] The present invention p...
Embodiment 2
[0096] In order to solve the above technical problems, the embodiment of the present invention also provides a location fingerprint positioning device, such as Figure 4 shown, including:
[0097] A reference point scale module 201, configured to perform reference point scale in the area to be positioned;
[0098] The position fingerprint establishment module 202 is used for establishing the position fingerprint according to the signal strength sample value of each scaled reference point;
[0099] The location fingerprint building module includes:
[0100] The location fingerprint vector building module is used to obtain the mean value of the signal strength samples in each direction of each reference point, and label the mean value of the signal strength samples in each direction of each test point as a location fingerprint vector, and after the label The location fingerprint vectors of are recorded in the fingerprint map.
[0101] The detection module 203 is used to detec...
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 location fingerprint positioning method and a device thereof, relating to the technical field of wireless positioning. The method comprises a step of carrying out reference point calibration and collecting the signal strength sample value of a calibrated reference point in an area to be positioned, a step of detecting and dividing the area to be positioned into a plurality of sub areas according to the MAC address list of a wireless access point and the largest diameter of a wireless access point coverage area and detecting the MAC address lists of all wireless access points in each of the sub areas, and a step of matching the MAC address lists of wireless access points of target point actual measurement with the MAC address lists of the wireless access points in each of the sub areas and determining the final position of the target point according to a matching result. According to the method and the device, through carrying out reference point calibration in the area to be positioned, high positioning accuracy is obtained, the area to be positioned is divided into a plurality of sub areas, and the computational complexity of high positioning is reduced. In addition, through the reduction of the computational complexity, the real-time positioning of the target point can be realized.
Description
technical field [0001] The invention relates to the technical field of wireless positioning, in particular to a position fingerprint positioning method and device. Background technique [0002] In recent years, wireless positioning technology can be divided into two types: ranging-based positioning and non-ranging-based positioning. For example, traditional positioning technologies based on TOA (Time of Arrival) / TDOA (Time Difference of Arrival) / RSS (Received Signal Strength) are calculated based on time or signal strength parameters The approximate distance between the base station and the target point, and then use the geometric position relationship between the base stations to locate the target point. However, ranging-based positioning technology is easily interfered by non-line-of-sight situations, and its positioning accuracy and stability are poor for wireless channels with high complexity and strong time-varying characteristics. Therefore, in indoor scenarios, many...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more