PRECISE GPS DEVICE AND METHOD USING A WIRELESS AP
First Claim
1. A precision positioning system, comprising:
- a GPS reference station generating navigation correction information for a wireless access point by receiving first satellites'"'"' signal from a GPS satellite and transmitting the generated navigation correction information to the wireless access point;
a wireless access point receiving the navigation correction information from the GPS reference station and transmitting the received information to a user terminal; and
a user terminal receiving second satellites'"'"' signal from the GPS satellite and recognizing the navigation correction information from the wireless access point to generate precise user position information on the basis of the second satellite signal and the navigation correction information.
1 Assignment
0 Petitions
Accused Products
Abstract
In the present invention, a GPS reference station generates and transmits GPS error correction information for each wireless AP and a user terminal recognizes the GPS error correction information to be used for correcting reception information of a user terminal GPS receiver, thereby acquiring precision positioning performance. That is, a precision poisoning system of the present invention includes: a GPS reference station generating navigation correction information for a wireless access point by receiving a first satellites'"'"' signal from a GPS satellite with respect to the reference station and transmitting the generated navigation correction information to the wireless access point; a wireless access point receiving the navigation correction information from the GPS reference station and transmitting the received information to a user terminal; and a user terminal receiving a second satellites'"'"' signal from the GPS satellite with respect to the user terminal and recognizing the navigation correction information from the wireless access point to generate precise user position information on the basis of the second satellite signal and the navigation correction information.
4 Citations
17 Claims
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1. A precision positioning system, comprising:
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a GPS reference station generating navigation correction information for a wireless access point by receiving first satellites'"'"' signal from a GPS satellite and transmitting the generated navigation correction information to the wireless access point; a wireless access point receiving the navigation correction information from the GPS reference station and transmitting the received information to a user terminal; and a user terminal receiving second satellites'"'"' signal from the GPS satellite and recognizing the navigation correction information from the wireless access point to generate precise user position information on the basis of the second satellite signal and the navigation correction information. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A precision positioning apparatus, comprising:
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a GPS receiver receiving a satellite signal from a GPS satellite; a communication unit capable of communicating with a wireless access point; and a positioning information correcting unit receiving navigation correction information for the wireless access point from the wireless access point by communicating with the wireless access point and generating precise position information thereof on the basis of the navigation correction information and the satellites'"'"' signal. - View Dependent Claims (8, 9, 10)
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11. A precision positioning method by a precision positioning system including a GPS reference station, a wireless access point, and a user terminal, the method comprising:
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generating, by the GPS reference station, navigation correction information for a wireless access point by receiving first satellites'"'"' signal from a GPS satellite; transmitting, by the GPS reference station, the generated navigation correction information to the wireless access point; receiving, by the user terminal, second satellites'"'"' signal from the GPS satellite; receiving, by the user terminal, the navigation correction information from the wireless access point; and generating, by the user terminal, precise user position information on the basis of the second satellite signal and the navigation correction information. - View Dependent Claims (12, 13)
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14. A precision positioning method by a user terminal, which includes a GPS receiver and a wireless communication unit, the method comprising:
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receiving first satellites'"'"' signal from a GPS satellite; receiving navigation correction information for the wireless access point from a near wireless access point capable of performing communication by using the wireless communication unit; and generating precise user position information on the basis of the first satellite signal and the navigation correction information. - View Dependent Claims (15, 16, 17)
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Specification