Successive approximation type wifi positioning method and device
A positioning device and a step-by-step approximation technology, applied in measurement devices, services based on location information, instruments, etc., can solve the problems of large impact on multiple measurement sites and low positioning efficiency, and achieve easy understanding, help correctness, and improve accuracy. degree and positioning efficiency
Inactive Publication Date: 2017-12-01
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
[0003] In view of the defects in the prior art that require multiple measurements and are greatly affected by the field, the present invention proposes a gradually approaching wifi device positioning method, which has the advantages of simple principle, easy implementation, and easy operation, and can effectively solve the problem of signals being affected by the environment. The problem of low positioning efficiency caused by the impact can effectively reduce the impact of environmental factors on gradually approaching positioning
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[0030] The present invention will now be described in detail in conjunction with the accompanying drawings and specific implementation techniques. The present invention adopts the directional antenna and the signal acquisition unit to continuously collect the signal field strength of the target equipment, and integrates and accumulates the signal field strength. The integral value is used as the reference field strength of the signal, and the signal threshold is determined according to the reference field strength. If the average comparison value exceeds the threshold value, the degree of direction deviation will be further calculated to indicate the angle of direction deviation, and the user will be prompted to correct the direction through images and sounds, so as to improve positioning accuracy and work efficiency.
[0031] The present invention relates to a WiFi positioning method and device. The device includes a signal receiving part, signal identification processing, int...
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The invention discloses a successive approximation type wifi positioning method and device. The method comprises the steps of detecting surrounding wifi devices by a positioning device; after a target wifi device is detected, automatically locking a network parameter of the wifi device; changing a direction of the positioning device or moving the positioning device; and determining a direction of a target through position information displayed by an observation device, and positioning the target wifi device in a successive approximation manner. The positioning device comprises a signal receiving module, a signal identification processing module, an integral calculation module, a signal change threshold comparison module, and a direction change indication module. Through adoption of the successive approximation type wifi positioning method and device, problems in successive approximation positioning of the Wifi device are solved, and the network characteristic, behavior characteristic and traffic characteristic of the wifi device can be locked rapidly so as to determine the target device. The invention provides a method of rapidly locking users with abnormal behaviors through characteristic identification rather than device MAC address identification, so that the Wifi terminal can be better identified on the site.
Description
technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a positioning method based on WiFi signal strength, in particular to a positioning method and device for locating and searching for a signal source based on Wifi signal strength. Background technique [0002] At present, Wi-Fi technology has become a standard configuration of personal electronic terminals, and notebook computers, smart phones, tablet computers, etc. all have the function of Wi-Fi networking. When a Wi-Fi device is connected to a Wi-Fi network, it will send out a Wi-Fi signal, and the Wi-Fi terminal can be located and searched by monitoring the signal and identifying the physical address of the Wi-Fi device. The positioning device locates the target terminal by identifying the signal field strength sent by the Wi-Fi terminal. In order to improve the accuracy of positioning, many technical means can be used, such as the method of calculating through mu...
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IPC IPC(8): H04W4/02H04W64/00G01S11/06
CPCG01S11/06H04W4/026H04W64/003
Inventor 杨健刘尚东李鹏曾元李俊玮王飞郑晓佳
Owner NANJING UNIV OF POSTS & TELECOMM