| 摘要 |
PROBLEM TO BE SOLVED: To calculate and display a positional relation between an own ship and a target at each estimated time on which a ship handling person focuses based on own ship information or the like at the newest point of time. SOLUTION: In the navigation aid device, own ship information including a position, a ship speed and a ship direction of the own ship or the like at every predetermined information acquisition time is acquired at the predetermined information acquisition time intervals to calculate a position of the own ship or the like at each estimated time (calculation time of the position or the like). The calculation of the position of the own ship or the like at each estimated time to be displayed is calculated at each calculation point of time based on the own ship information acquired at the newest information acquisition time with respect to the calculation point of time of the information acquisition times. COPYRIGHT: (C)2010,JPO&INPIT |
