| 摘要 |
<p>PURPOSE:To accurately grasp the state of disappearance and carry on subsequent monitoring by storing the disappearance position and/or identification code of a disappearing material, and displaying and confirming its contents upon occasion. CONSTITUTION:A target tracking part 8 receives code setting signals of other ships through a control part 5, extracts a ship to be tracked from a radar echo signal, and sends its position (relative position with this ship), a future predicted position, etc., to an other-ship wake processing part 9. The processing part 9 calculates and stores the longitude, latitude, absolute speed, absolute course, and vectors of the target ship according to target-ship information and information on this ship sent through the control part 5. If the ship is mistracked in a monitor area, an alarm is generated and the disappearance position, identification code, etc., are stored in a disappearing ship display field and also displayed 10. Further, when the ship in the disappearing ship display field appears on the screen, a tracking part 8 sends its identification code to the processing part 9, which erases the identification code in the disappearing- ship display field and displays a new and an old wake on a display part 10.</p> |
