A Method of Restricting Aided Positioning Based on Cellular Area
A technology that assists positioning and area limitation, and is applied to services based on location information, services based on specific environments, measurement devices, etc., and can solve the problems of low latency and high precision.
Active Publication Date: 2020-07-21
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
[0005] Aiming at the above-mentioned shortcomings in the prior art, the invention provides a method for assisted positioning based on cellular area restriction, which solves the problem that the prior art cannot take into account both low delay and high precision
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[0072] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0073] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0074] Such as figure 1 As shown, a method for restricting assisted positioning based on a cellular area includes the following steps:
[0075] S1. Divide the indoor positioning area into square cells to obtain basic information, and save the basic information to the server;
[0076] S2. Obtain th...
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The invention discloses a method for assisted positioning based on cellular area limitation, which comprises the following steps: divide the indoor positioning area into square cells, obtain basic information, and save it to a server; obtain the mobile terminal and a WIFI transmitter at different distances d z The test signal is used to obtain the ranging formula through the test signal; the positioning signal and the information set of all WIFI transmitters are obtained through the mobile terminal, and the positioning signal is subjected to Kalman filtering, and according to the filtered positioning signal, the mobile terminal is obtained using the ranging formula. The distance to all WIFI transmitters; according to the information set, the filtered positioning signal and the distance, the positioning point (x 0 ,y 0 ), and set the anchor point (x 0 ,y 0 ) is displayed on the UI interface. The present invention avoids time delay while improving precision, and realizes real-time high-precision positioning.
Description
technical field [0001] The invention belongs to the field of indoor positioning, and in particular relates to a method for assisting positioning based on cellular area restriction. Background technique [0002] The core issue of Indoor Location Based Service (ILBS) lies in the indoor positioning technology. At present, there are mainly two implementation methods: trilateral and triangular positioning and fingerprint positioning. [0003] Trilateral and triangular positioning technology is a traditional positioning technology. First, the ranging formula generates the distance from the mobile terminal to the i-th AP (Access Point), and then combines the position coordinates of the i-th AP to calculate the movement The location coordinates of the terminal. This method has good real-time performance and low algorithm complexity, but the general accuracy is not high, and it is easily affected by noise during ranging. [0004] Fingerprint identification technology is a new type...
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IPC IPC(8): H04W4/02H04W4/021H04W4/33H04W64/00G01S11/06
CPCG01S11/06H04W4/021H04W4/023H04W4/33H04W64/006
Inventor 武畅游远袁环宇金雪敏杨帆吴鹏
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA