Coring-based ridge regression WiFi-RTT positioning system and method for mobile terminal
A technology for mobile terminals and positioning systems, applied in electrical components, wireless communications, etc., can solve the problems of inability to obtain positioning results due to half-system errors, increase in high-precision positioning, and deviation of ranging results, so as to reduce the requirements for data processing capabilities and improve The effect of reducing positioning accuracy and number of numbers
Pending Publication Date: 2021-11-16
AEROSPACE INFORMATION RES INST CAS
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Problems solved by technology
ToA, TDoA and other ranging methods cause serious deviations in ranging results due to clock errors, and it is extremely unreasonable to use them for positioning
The RTT ranging method can provide more accurate ranging results due to the elimination of the influence of the clock error, and cannot obtain good positioning results due to the existence of semi-systematic errors
During the use process, the frequent changes of the return value status of the router have increased the difficulty of indoor high-precision positioning, and no reasonable solution has been proposed so far
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[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0042] see Figure 1-2, according to a kernelization-based ridge regression WiFi-RTT positioning system for mobile terminals according to an embodiment of the present invention, the system includes a central processing unit 1, and the central processing unit 1 is connected to a data acquisition system 2 and a data preprocessing system respectively. System 3 and positioning solution system 4;
[0043] The data collection system 2 collects and store...
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The invention discloses a coring-based ridge regression WiFi-RTT positioning system and method for a mobile terminal, and the system comprises a central processing unit, a data collection system, a data preprocessing system and a positioning calculation system. The data collection system collects and stores data into a data set, and transmits the data set to the data preprocessing system; the data preprocessing system obtains a router return value mode change time sequence through router information processing by using a mode discrimination monitoring algorithm, and then transmits the time sequence to the de-multipath effect resolving algorithm; the data can be corrected by using the de-multipath effect resolving algorithm to obtain de-multipath data information, and then the de-multipath data information is transmitted to the noise reduction algorithm; then de-noising is carried out on the de-multipath data information by using a de-noising algorithm, and the information is transmitted to the positioning resolving system through the central processing unit; and the positioning resolving system performs time-limited positioning resolving on the data by using a positioning resolving algorithm to obtain a positioning resolving result without system error influence.
Description
technical field [0001] The invention relates to the technical field of indoor positioning, in particular to a ridge regression WiFi-RTT positioning system and method based on kernelization for mobile terminals. Background technique [0002] The application of location-based services has attracted more and more attention to positioning technology, and at the same time puts forward higher requirements for the accuracy of positioning results. With the popularity and application of smart phones, mobile phones that provide a variety of location-based services will become the main carrier of high-precision positioning for the public in the future. Since navigation signals based on the Global Navigation Satellite System (GNSS) are difficult to be received indoors, they cannot be used for indoor positioning. In order to solve the problem of indoor positioning, a variety of technical solutions have been proposed, such as based on WiFi, ultra-wideband, Bluetooth, inertial sensors, et...
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IPC IPC(8): H04W64/00
CPCH04W64/00
Inventor 李子申郭笑尘汪亮吴海涛王宁波
Owner AEROSPACE INFORMATION RES INST CAS