| 摘要 |
PROBLEM TO BE SOLVED: To display the state of a celestial body, based on the position of the actual celestial body with reference to a navigation system in which a bird's-eye view can be expressed. SOLUTION: The navigation system is provided with a GPS sensor 13 with which information about the position and information about days and time are acquired; a storage device 14 which stores map data and which stores data about information on the celestial body; a CPU 15 which reads out the map data from the storage device 14, on the basis of information about the position acquired by the GPS sensor 13, which generates display data on the bird's-eye view, by which the data about the information on the celestial body stored in the storage device 14 is read out, on the basis of the information about the position acquired by the GPS sensor 13 and on the basis of the information, regarding the day and the time and which generates data on the plotting of the celestial body displayed on the bird's-eye view, and a display monitor 17, on which the display data generated by the CPU 15 and the data on the plotting of the celestial body are displayed by the expression of the bird's-eye view. |
