LBS locating deviation-rectifying filtering technology

A filtering technology and geographic location technology, applied in satellite radio beacon positioning systems, measuring devices, instruments, etc., can solve the problems of inaccurate positioning and single positioning method, and achieve the effect of precise positioning

Inactive Publication Date: 2012-10-31
SHANGHAI ZHENSHI INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Solve the problem of single positioning method and inaccurate positioning in the past

Method used

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  • LBS locating deviation-rectifying filtering technology
  • LBS locating deviation-rectifying filtering technology
  • LBS locating deviation-rectifying filtering technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] LBS positioning correction and filtering technology:

[0011] 1. COO positioning:

[0012] Cell of Origin positioning is a single base station positioning, that is, the location of the device is determined according to the location of the cellular base station to which the device is currently connected. The accuracy of positioning depends on the radius of the cell. In urban center areas with dense base stations, multi-layer cells are usually used. The smaller the cell division, the higher the accuracy (about 50M); if the base station distribution is relatively scattered and the cell radius is large, it will reach several KM.

[0013] 2. Multi-base station positioning:

[0014] The downlink pilot signal of each base station is measured by the wireless terminal, and the TOA (Time of Arrival, time of arrival) of the downlink pilot of each base station is obtained. According to the measurement result and the coordinates of the base station, trigonometric functions and tri...

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PUM

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Abstract

The invention relates to an LBS (Location-based Service) locating deviation-rectifying filtering technology, which provides the service of rectifying the deviation of latitude and longitude coordinates after a geographic location is obtained from a wireless terminal in real time upon the LBS. The technology comprises the steps as follows: acquiring location information from the wireless terminal; carrying out an interactive transformation between the location information and a server to obtain more accurate address information; obtaining the information of the latitude and longitude coordinates through the femtocell locating and the multi-compound locating of A-GPS (Assisted Global Positioning System) and GPS (Global Position System) to transmit into a database for deviation rectification; comparing a geographical position database with the transmitted data of the latitude and longitude coordinates; utilizing the geographical position database to carry out the treatment of the deviation rectification according to the coordinate differences of relative locations; and compounding more accurate location information flow to return into mobile equipment by the geographical position database. The technology solves the problem of obtaining a bigger location information deviation value from the wireless terminal.

Description

1. Technical field [0001] A service that provides location-based services on a wireless terminal and implements longitude and latitude coordinate correction after obtaining the geographic location in real time, including obtaining location information from the wireless terminal, and interactively converting the information with the server to obtain more accurate address information. 2. Background technology [0002] LBS: The full name of LBS in English is Location Based Services, which includes two meanings: firstly, to determine the geographical location of mobile devices or users; secondly, to provide various information services related to location. It refers to various service systems related to positioning, referred to as "location service". For example, find the current geographic location of the mobile phone user, and then search for the names and addresses of hotels, theaters, libraries, gas stations, etc. within 1 km of the mobile phone user's current location withi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00G01S19/42
Inventor 苏捷
Owner SHANGHAI ZHENSHI INFORMATION TECH
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