发明授权
- 专利标题： GPS/self-contained combination type navigation system
- 专利标题（中）： GPS /独立组合型导航系统
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申请号： US167093申请日： 1988-03-11
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公开(公告)号： US4903212A公开(公告)日： 1990-02-20
- 发明人: Kazuhiro Yokouchi , Tatsumi Kageyama , Chogo Sekine , Harumasa Hojo , Koji Yamada , Makoto Mikuriya , Seiichiro Hirata
- 申请人： Kazuhiro Yokouchi , Tatsumi Kageyama , Chogo Sekine , Harumasa Hojo , Koji Yamada , Makoto Mikuriya , Seiichiro Hirata
- 申请人地址： JPX Tokyo JPX Tokyo
- 专利权人： Mitsubishi Denki Kabushiki Kaisha,Japan Radio Co., Ltd.
- 当前专利权人： Mitsubishi Denki Kabushiki Kaisha,Japan Radio Co., Ltd.
- 当前专利权人地址： JPX Tokyo JPX Tokyo
- 优先权： JPX62-56683 19870313; JPX62-125139 19870522
- 主分类号： G01C21/28
- IPC分类号： G01C21/28 ; G01S5/14 ; G01S19/22 ; G01S19/42
摘要：
In a global positioning system (GPS)/self-contained combination type navigation system for a vehicle, the GPS navigation data are received by the GPS antenna of the navigation system which are simultaneously transmitted from more than 3 pieces of satellites inclusively. From the GPS navigation data, GPS type velocity data is calculated, whereas self-contained type velocity data is calculated from self-contained type navigation data such as azimuth data and drive-distance data of the vehicle. Only when a difference between the self-contained type velocity data and the GPS type velocity data exceeds a threshold velocity, the GPS type velocity data is voided so as to determine the present position of the vehicle.
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