The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 2009
Filed:
May. 15, 2007
Kazuhiro Ogawa, Itabashi-ku, JP;
Kenichi Takasu, Itabashi-ku, JP;
Shigeyuki Yamaguchi, Itabashi-ku, JP;
Kazuhiro Ogawa, Itabashi-ku, JP;
Kenichi Takasu, Itabashi-ku, JP;
Shigeyuki Yamaguchi, Itabashi-ku, JP;
Kabushiki Kaisha TOPCON, Tokyo, JP;
Abstract
The invention is directed to an RTK-GPS survey system. The survey system includes a server () in an IP-VPN communication networkfor establishing communications between base stations (and) that transmit correction data and a rover stationthat receives the correction data. Each satellite positioning device constituting a base station and a rover station includes at least a satellite positioning unit () that receives radio waves from artificial satellites, a communication unit () that performs a communication between the satellite positioning device, and a control unit () that controls the satellite positioning unit () and the communication unit (). The control unit () of the rover stationcan receive interference information registered in the control unit () of each satellite positioning device of the base stations (and), and select a base station that transmits most appropriate correction data among the plural base stations.