| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna combined position data detector utilizing a GPS in a navigation device detecting a setting position from vehicle position information by a GPS receiver resolving problems such that indication of general map information and road environment information and simple position information exist but indication of necessary utilization purpose and the like do not exist, that level-up of the indication function results in complication and high cost and that sines indicated on a map indication device is overlooked in high speed running. SOLUTION: A main controlling means can control a present position operation means and an azimuth/distance operation means, survey the latest set position information from set position information on lattitude/longitude of a plurality of locations set in advance in a set position memory means, operate the distance to it from the latest set position information and the present vehicle position information, and generate an alarm with an alarm means when a plurality of specific distances to the set positoins are reached. |
