Location method and device based on wi-fi location fingerprint
A positioning method and fingerprint technology, which are applied in the directions of location-based services, wireless communications, electrical components, etc., can solve the problem of inaccurate positioning of wireless access points, and achieve the effect of accurate location information.
Active Publication Date: 2020-12-01
爱动超越人工智能科技(北京)有限责任公司
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Problems solved by technology
[0004] To solve the problem of inaccurate positioning when the number of wireless access points is small in the prior art, the embodiment of the present invention provides a positioning method and device based on Wi-Fi location fingerprints
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[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0019] figure 1 It is a flowchart of a positioning method based on Wi-Fi location fingerprints according to an embodiment of the present invention. Such as figure 1 As shown, a positioning method based on the Wi-Fi location fingerprint includes: step S1, according to the current feature vector of the terminal location at this moment, obtain the ...
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The embodiment of the invention provides a positioning method and device based on Wi-Fi position fingerprints. The method comprises the steps of obtaining a predicted value of a Wi-Fi position fingerprint at the moment according to a current feature vector of a terminal position at the moment; if it is judged that the difference between the observed value and the predicted value of the Wi-Fi position fingerprint at the current moment is smaller than a preset error threshold value, determining the current feature vector of the terminal position at the current moment as the feature vector of theterminal position at the current moment, and obtaining the weight of each reference point according to the feature vector of the terminal position at the current moment; and acquiring the position information of the terminal at the moment according to the weights and the position information of all the reference points. The device comprises a prediction module, a weight module and a positioning module, and is used for obtaining the position information of the terminal at the moment according to the weights and the position information of all reference points. According to the method and the device provided by the embodiment of the invention, more accurate position information of the terminal can be obtained when the number of the wireless access points is small..
Description
technical field [0001] Embodiments of the present invention relate to the field of wireless communication technologies, and in particular to a positioning method and device based on Wi-Fi location fingerprints. Background technique [0002] In daily positioning activities, one of the most commonly used applications is to query the user's historical trajectory. Trajectory is a collection of sequential locations within a period of time. Restoring the user's trajectory is also an important application of positioning. In many location-based services, merchants or users themselves want to know the user's walking trajectory within a certain period of time, and use the historical trajectory to make some portraits and mining of users, so that specific users can be provided with services that suit the user. However, during the collection process, data will be lost due to building occlusion and other reasons. When restoring the location information of some locations, although a locat...
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IPC IPC(8): H04W4/02H04W4/80H04W64/00
CPCH04W4/023H04W64/003H04W4/80
Inventor 邓海勤高志勇宋云鹏张朔铭张勇郭达
Owner 爱动超越人工智能科技(北京)有限责任公司