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Patent Searching and Data


Title:
METHOD OF CORRECTING DGPS, AND MOBILE STATION
Document Type and Number:
Japanese Patent JP2001116820
Kind Code:
A
Abstract:

To exactly correct an error of a positioning data caused by an an ionized laler lag and an atmospheric layer lag to provide accurate positional information.

This mobile station 1 receives correction data from plural reference DGPS stations 5a, 5b,..., 5n transmitted via a center station 9 and a broadcasting station 11 together with the position information, to correct the correction data by a weighted mean method in response to distances from the respective DGPS reference stations 5 to calculate a true correction amount, and receives GPS signals from plural GPS satellites 3a, 3b,..., 3m to correct a calculated position of the mobile station 1 itself using the true correction amount, so as to provide the accurate positional information of the mobile station 1 itself.


Inventors:
SHOJI MASAAKI
TSURUMARU SHOKON
ISHIGAKI TOSHIHIRO
Application Number:
JP29442399A
Publication Date:
April 27, 2001
Filing Date:
October 15, 1999
Export Citation:
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Assignee:
NTT COMM KK
MATSUSHITA COMMUNICATION IND
International Classes:
G01S19/07; G01S19/22; (IPC1-7): G01S5/14
Attorney, Agent or Firm:
Hidekazu Miyoshi (4 outside)