发明申请
- 专利标题： Navigation Device Having In-Tunnel Position Estimation Function
- 专利标题（中）： 具有隧道位置估计功能的导航装置
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申请号： US13577765申请日： 2011-02-16
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公开(公告)号： US20130018578A1公开(公告)日： 2013-01-17
- 发明人: Shigeru Matsuo , Katsuaki Tanaka
- 申请人： Shigeru Matsuo , Katsuaki Tanaka
- 申请人地址： JP Saitama-shi, Saitama
- 专利权人： CLARION CO., LTD.
- 当前专利权人： CLARION CO., LTD.
- 当前专利权人地址： JP Saitama-shi, Saitama
- 优先权： JP2010-038103 20100224
- 国际申请： PCT/JP2011/053262 WO 20110216
- 主分类号： G01C21/34
- IPC分类号： G01C21/34
摘要：
A navigation device that includes a map data base in which map information is stored and a positioning unit that determines a current position based upon a radio wave signal received from a satellite, contains: a tunnel detection unit that detects a tunnel that is present ahead on a road where the navigation device is moving; a travel data acquisition unit that acquires travel data of another vehicle from an information center; and a position estimation unit that in case the tunnel detection unit detects a presence of a tunnel ahead on a road and the travel data acquisition unit acquires from the information center travel data of another vehicle that has traveled through the detected tunnel, estimates a current position of the navigation device in the detected tunnel using a travel speed in the detected tunnel in the acquired travel data as a movement speed of the navigation device.
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