发明名称 |
AUTOMATIC PAST ERROR CORRECTIONS FOR LOCATION AND INVENTORY TRACKING |
摘要 |
<p>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.</p> |
申请公布号 |
CA2614977(C) |
申请公布日期 |
2014.08.12 |
申请号 |
CA20062614977 |
申请日期 |
2006.06.30 |
申请人 |
CONTAINERTRAC, INC. |
发明人 |
TAN, HAN-SHUE;HENRY, LARRY |
分类号 |
G01C21/00;G01S19/11;G01C21/16;G01C21/30;G01S5/02;G01S5/14 |
主分类号 |
G01C21/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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