Title:
所在及び在庫追跡のための過去エラー自動補正
Document Type and Number:
Japanese Patent JP2009501344
Kind Code:
A
Abstract:
A system is provided for tracking and maintaining an inventory of location of containers that are stored on cargo ships or in a container yard. The system includes one or more sensors, such as GPS and INS sensors for obtaining real-time position information, as well as a processor configured to automatically provide post processing to recover lost data and to correct erroneous data, such as when real-time position signals are blocked or distorted, the post processing performed by estimating trajectories and correcting the location errors. Post-processed positioning techniques are continuously applied to the stored position data to iteratively determine calibrated position locations to provide calibrated second trajectory segments in a real-time fashion. The calibrated second trajectories are then used to identify the errors in the past real-time position data as soon as a segment of the second calibrated trajectory becomes statistically trustworthy. Corrections can be automatically made in inventory locations stored in a database to correct position errors for the containers.
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Inventors:
Tan Han Shu
Henry rally
Henry rally
Application Number:
JP2008533334A
Publication Date:
January 15, 2009
Filing Date:
June 30, 2006
Export Citation:
Assignee:
Container truck incorporated
International Classes:
G01C21/00; G01S19/11; G01S5/02; B65G61/00
Domestic Patent References:
| JP2001116560A | 2001-04-27 | |||
| JP2001147120A | 2001-05-29 | |||
| JP2001147120A | 2001-05-29 | |||
| JP2001116560A | 2001-04-27 |
Foreign References:
| US20030158664A1 | 2003-08-21 | |||
| US6408245B1 | 2002-06-18 | |||
| US20030158664A1 | 2003-08-21 | |||
| US6408245B1 | 2002-06-18 |
Attorney, Agent or Firm:
Sadao Kumakura
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda