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A wifi outdoor positioning method for establishing/updating a satellite-assisted signal coverage map

An auxiliary signal and satellite positioning technology, applied in wireless communication, electrical components, etc., can solve the problems of slow update speed and long positioning time, and achieve the effect of fast update speed and reduced positioning time

Active Publication Date: 2015-08-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem that the current WiFi outdoor positioning method has a long positioning time due to the slow establishment / update of the Radio Map, thereby providing a WiFi outdoor positioning method for establishing / updating a satellite-assisted signal coverage map

Method used

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  • A wifi outdoor positioning method for establishing/updating a satellite-assisted signal coverage map
  • A wifi outdoor positioning method for establishing/updating a satellite-assisted signal coverage map
  • A wifi outdoor positioning method for establishing/updating a satellite-assisted signal coverage map

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specific Embodiment approach 1

[0057] Specific implementation mode 1. Combination Figure 1 to Figure 5 Illustrate this specific embodiment, a kind of satellite-assisted Radio Map establishment / update method in the WiFi outdoor positioning system is realized through the following steps:

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Abstract

The invention discloses a WiFi (wireless fidelity) outdoor positioning method for building / updating a satellite assisted radio map, relates to a WiFi outdoor positioning method, and aims to solve the problem of long positioning time due to low Radio Map building / updating speed of a current WiFi outdoor positioning method. The method includes the steps: receiving a signal strength RSS (really simple syndication) value and a DI (data input) value of each AP (access point) by the aid of a WiFi device; uploading the signal strength RSS value of each AP, the DI value of each AP, a satellite positioning longitude value lon, a satellite positioning latitude value lat and a positioning precision factor DoP to a Radio Map server by a volunteer terminal through a WiFi network; processing the data by the Radio Map server to obtain processed data; and building / updating the radio map according to the processed data and performing WiFi outdoor positioning. The WiFi outdoor positioning method is applicable to outdoor positioning.

Description

technical field [0001] The invention relates to a WiFi outdoor positioning method. Background technique [0002] With the wide application of WiFi technology in the world, WiFi has not only been able to be used in places such as airports, high-end office buildings, restaurants, hotels, research institutions, campuses and homes, the construction of digital cities has also enabled people to use WiFi outdoors technology. At present, the WiFi positioning system is attracting more and more attention no matter it is indoor or outdoor. [0003] In particular, in an outdoor environment, the initial positioning start-up time of the current satellite positioning is too long. Moreover, when the satellite does not work normally or the satellite signal is blocked by urban buildings, the user cannot use the satellite positioning and navigation service. Therefore, there is an urgent need for an outdoor positioning and navigation technology that enhances satellite positioning and navigat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00
Inventor 马琳邓仲哲徐玉滨孟维晓周才发
Owner HARBIN INST OF TECH