Positioning method

A positioning method and a technology for positioning terminals, which are applied to electrical components, wireless communications, etc., can solve problems such as inability to locate real-time positions, and achieve the effect of improving reliability
CN103068041AActive Publication Date: 2013-04-24GCI SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GCI SCI & TECH
Publication Date
2013-04-24

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Abstract

The invention discloses a positioning method. A wireless service terminal collects positions of a plurality of sample points and corresponding wireless signal feature values and builds a probability distribution model of the wireless signal feature values on the positions of the plurality of sample points, wherein the number of the sample points N is a positive whole number. A Markov single-step position transition probability matrix is built. The wireless service terminal conducts a m-time positioning according to the probability distribution model and the Markov single-step position transition probability matrix, wherein m is more than or equal to 1. Further, the Markov single-step position transition probability matrix can achieve necessary updates according to practical situations. The positioning method effectively uses information of the wireless signals in the environment, achieves real-time positioning of pre-positioning terminals and further improves accuracy of the positioning.
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Description

technical field

[0001] The present invention relates to the technical field of positioning, in particular to a positioning method. Background technique

[0002] At present, the positioning technology based on the Global Positioning System (GPS) is quite mature, and the number of GPS satellites is relatively large and evenly distributed. User receivers can observe at least 4 satellites simultaneously at any outdoor location on the earth at any time. GPS satellites ensure global and all-weather navigation and positioning services for user receivers. However, due to the complex situation on the earth's surface, GPS satellite signals are affected by factors such as atmospheric friction, forest barriers, and building occlusions, which limits the application range of GPS positioning systems to a certain extent. For example, in indoor positioning occasions, GPS is no longer applicable because the user receiver cannot receive complete GPS satellite signals.

[0003] In recent yea...

Claims

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