Indoor fingerprint positioning method based on rssi signal strength ranking
A technology of signal strength and fingerprint positioning, which is applied to location-based services, services based on specific environments, wireless communication, etc., and can solve problems such as high complexity of algorithms and reduced efficiency of positioning
Inactive Publication Date: 2020-07-31
马梓翔 +2
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, these algorithms generally have relatively high complexity, which will reduce the efficiency of positioning, and the need to train samples in advance will also affect practical applications.
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
[0035] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the embodiments described below are only used to explain the present invention, not to limit the present invention.
[0036] See details figure 1, the present invention can provide an AP selection algorithm based on sorting fingerprints that has nothing to do with device differences and a method for effectively improving device differences. At the same time, it also considers the computing power of user equipment, and proposes two different positioning algorithms, mainly including the following step:
[0037] Step 1, in order to further illustrate the adaptability of the model to the environment, the present invention conducts experiments in a typical indoor environment (personnel activities exist ...
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
In order to solve the problem that positioning accuracy is influenced by equipment difference in an indoor positioning fingerprint algorithm, a probability comparison method is utilized to perform signal strength-based sorting on various APs (Access Points) of a fingerprint point, so as to effectively improve the influence of the equipment difference on the positioning accuracy. The invention discloses a method for improving the influence of the equipment difference on the positioning accuracy based on fingerprint sorting. The method is characterized by performing strength sorting on the APs of the fingerprint point, then utilizing the number of effective subsets to perform AP selection, and providing two optional positioning algorithms according to the computing resource of equipment, wherein the two optional positioning algorithms consist of a positioning algorithm based on KTCC (Kendall's Tau Correlation Coefficient) in combination with weighted k-nearest neighbor, and a positioningalgorithm based on CNN (Convolutional Neural Network) in combination with the weighted k-nearest neighbor.
Description
technical field [0001] The invention relates to the technical field of indoor positioning, and mainly relates to indoor fingerprints, which are used to improve the influence of the deviation of received RSSI signals between different devices on the accuracy. Background technique [0002] With the continuous advancement of technology, the Internet of Things (IoT), a technology that intelligentizes the physical world through smart sensors, has brought disruptive changes to society and opened a new era for a smart society. Emerging technologies such as smart cities, smart transportation, smart homes, and smart industries have begun to change people's lifestyles. As the engine of the Internet of Things, location services have become a vital part of the development of the Internet of Things. [0003] Current location service technologies are mainly divided into two categories: outdoor and indoor positioning technologies. As a mainstream outdoor positioning technology, GPS cover...
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 Patents(China)
IPC IPC(8): H04W4/02H04W4/021H04W4/33H04W64/00G01S11/06
CPCH04W4/025H04W4/33H04W64/00
Inventor 马梓翔吴帮吴伟
Owner 马梓翔