发明名称 |
POSITION DETERMINATION USING CARRIER PHASE MEASUREMENTS OF SATELLITE SIGNALS |
摘要 |
Disclosed is a method and apparatus for determining the relative position of a mobile unit that moves from an initial location to a plurality of successive positions. The mobile unit receives signals from a plurality of navigation satellites and tracks the carrier phases of the signals during movement. For each of the received signals, carrier phase increments are calculated over a plurality of epochs. Anomalous carrier phas e increments are determined and eliminated from further calculations. The non- eliminated carrier phase increments are then used to calculate coordinate increments for each of the time epochs. If, after elimination, the remaining number of carrier-phase increments is less than a threshold for a particular epoch, then coordinate increments for the particular epoch may be extrapolated using data from prior epochs. I n various embodiments, least squares method and Kalman filtering may be used to calculate the coordinate increments. The coordinate increments may then be summed over a plurality of time epochs in order to determine a position of the mobile unit relative to its initial position.
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申请公布号 |
CA2551416(A1) |
申请公布日期 |
2007.03.08 |
申请号 |
CA20062551416 |
申请日期 |
2006.06.30 |
申请人 |
TOPCON GPS, LLC |
发明人 |
ZINOVIEV, ALEXEY;VEITSEL, VICTOR A.;ZHODZISHSKY, MARK I. |
分类号 |
G01S19/05;G01S19/07;G01S19/20;G01S19/41;H04Q7/36 |
主分类号 |
G01S19/05 |
代理机构 |
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主权项 |
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地址 |
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