Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
POSITIONING APPARATUS AND POSITION ESTIMATION METHOD
Document Type and Number:
Japanese Patent JP2009210407
Kind Code:
A
Abstract:

To obtain a positioning apparatus and a position estimation method for simultaneously estimating an accurate position of a fixed station and internal delay times of a mobile terminal and the fixed station if they are unknown, and facilitating an installation of the positioning apparatus.

The positioning apparatus for respectively estimating the positions of a plurality of the stations (1, 2) and the internal delay times included in communication processes within the stations includes an estimation means for respectively estimating the positions and the internal delay times of a plurality of the stations by solving a simultaneous equation for a plurality of the stations based on measurement results of a distance between two stations included in a plurality of the stations (1, 2) and a radio wave travel time defined by the internal delay times of two stations.


Inventors:
SUZUKI NOBUHIRO
OKAMURA ATSUSHI
Application Number:
JP2008053448A
Publication Date:
September 17, 2009
Filing Date:
March 04, 2008
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G01S5/14; H04W64/00
Domestic Patent References:
JPS59212787A1984-12-01
JPH05506951A1993-10-07
JP2003510614A2003-03-18
JP2006300861A2006-11-02
JP2006349515A2006-12-28
JP2003506930A2003-02-18
Other References:
JPN6012059033; 土屋 淳、辻 宏道: 新・GPS測量の基礎 , 20020930, pp. 54-61, 社団法人 日本測量協会
Attorney, Agent or Firm:
Michiharu Soga
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
Kazuhiro Oyaku
Shunichi Ueda