Title:
PRECISE GPS DEVICE AND METHOD USING A WIRELESS AP
Document Type and Number:
WIPO Patent Application WO/2011/155806
Kind Code:
A3
Abstract:
According to the present invention, a GPS reference station generates and transmits compensation information on GPS deviations for each wireless AP, and a user terminal recognizes and uses the information to compensate for information received through a GPS receiver of the user terminal, in order to deliver precise GPS performance. In particular, a precise GPS system of the present invention comprises: a GPS reference station for receiving a first satellite signal from a GPS satellite to generate navigation compensation information on a wireless AP, and transmitting the generated navigation compensation information to a wireless AP; a wireless AP for receiving the navigation compensation information from the GPS reference station, and transmitting the information to a user terminal; and a user terminal for receiving a second satellite signal from a GPS satellite, recognizing the navigation compensation information from the wireless AP, and generating precise user position information based on the second satellite signal and the navigation compensation information.
Inventors:
LEE SANG UK (KR)
AHN DO SEOB (KR)
LEE JAE EUN (KR)
AHN DO SEOB (KR)
LEE JAE EUN (KR)
Application Number:
PCT/KR2011/004308
Publication Date:
March 08, 2012
Filing Date:
June 13, 2011
Export Citation:
Assignee:
KOREA ELECTRONICS TELECOMM (KR)
LEE SANG UK (KR)
AHN DO SEOB (KR)
LEE JAE EUN (KR)
LEE SANG UK (KR)
AHN DO SEOB (KR)
LEE JAE EUN (KR)
International Classes:
G01S19/07
Foreign References:
| KR19990084229A | 1999-12-06 | |||
| KR20050116590A | 2005-12-13 | |||
| US6249245B1 | 2001-06-19 | |||
| US20090224967A1 | 2009-09-10 |
Attorney, Agent or Firm:
JIMYUNG PATENT FIRM (1676-1Seocho 1-dong, Seocho-gu, Seoul 137-881, KR)
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Claims: