公开(公告)号：EP0599014A1

公开(公告)日：1994-06-01

申请号：EP93115474.4

申请日：1993-09-24

申请人： MOTOROLA, INC.

发明人： Durboraw, Isaac Newton

IPC分类号： G01S5/14 ,  G01S3/14

CPC分类号： G01S19/55 ,  G01S3/48

摘要： A directgion indicating apparatus and method using a GPS receiver (10) with processor (14, 16), memory (18), input (20, 201) and indicator (22, 221, 222), uses conventional code pseudorange and carrier phase to provide a compass function. The receiver antenna (12) is desirably held stationary while the directional vectors toward the satellites and for the desired heading (21) are computed, the rate of change of carrier phase determined and future carrier phase predicted. The antenna (12) is then moved in a closed path (11) while the differences between predicted and actual carrier phase are measured and converted to positional perturbations which are resolved along the desired heading (21) and normal thereto. As the antenna (12) moves around the closed path (11), the resolved perturbations have maxima, minima or change sign and the processor (14, 16) uses this to trigger the indicator (22, 221, 222) so that the desired heading is apparent to the user (8).

摘要翻译： 使用具有处理器（14,16），存储器（18），输入（20,201）和指示器（22,221,222）的GPS接收器（10）的直接指示装置和方法使用传统的代码伪距和载波相位 提供罗盘功能。 理想地，接收机天线（12）保持静止，同时计算朝向卫星和期望航向（21）的方向矢量，确定载波相位的变化速率和未来载波相位预测。 然后，天线（12）在闭合路径（11）中移动，同时测量预测和实际载波相位之间的差异，并将其转换为沿着期望的航向（21）并与其正常地分离的位置扰动。 当天线（12）围绕闭合路径（11）移动时，分辨的扰动具有最大值，最小值或改变符号，并且处理器（14,16）使用该方式来触发指示器（22,221,222），使得所需的 标题对用户来说是显而易见的（8）。