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公开(公告)号：US5796613A
公开(公告)日：1998-08-18
申请号：US510088
申请日：1995-08-01
CPC分类号： G01C21/28
摘要： In order to calculate the traveling distance and heading of a vehicle in highly accurate fashion, a navigation system is provided with a distance sensor for outputting pulses in proportion to rotation of a wheel, a GPS receiving unit for calculating vehicle speed by GPS reception, acquisition unit for acquiring the number of pulses at the same time as GPS reception, distance correction coefficient calculating unit for calculating GPS traveling distance from the GPS-reception vehicle speed and a time difference between any two points, and calculating a distance correction coefficient from the GPS traveling distance and a pulse difference between two points, and present position calculating unit for calculating present position based upon a corrected distance correction coefficient.
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2.发明授权
公开(公告)号：US5890092A
公开(公告)日：1999-03-30
申请号：US6158
申请日：1998-01-13
CPC分类号： G01C21/28
摘要： In order to calculate the traveling distance and heading of a vehicle in highly accurate fashion, a navigation system is provided with a distance sensor for outputting pulses in proportion to rotation of a wheel, a GPS receiving unit for calculating vehicle speed by GPS reception, acquisition unit for acquiring the number of pulses at the same time as GPS reception, distance correction coefficient calculating unit for calculating GPS traveling distance from the GPS-reception vehicle speed and a time difference between any two points, and calculating a distance correction coefficient from the GPS traveling distance and a pulse difference between two points, and present position calculating unit for calculating present position based upon a corrected distance correction coefficient.
摘要翻译： 为了以高度准确的方式计算出车辆的行进距离和航向，导航系统设置有用于与车轮的旋转成比例地输出脉冲的距离传感器，用于通过GPS接收计算车辆速度的GPS接收单元 用于获取与GPS接收同时的脉冲数的单元，用于从GPS接收车辆速度计算GPS行驶距离的距离校正系数计算单元和任何两点之间的时间差，并且计算来自GPS的距离校正系数 行程距离和两点之间的脉冲差，以及基于校正距离校正系数计算当前位置的当前位置计算单元。
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