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|Title: ||Estimation of Receiver Clock Parameters for Improving Accuracy of GPS Relative Satellite Positioning and Attitude Determination|
|Authors: ||S. G. Lin;C. P. Tseng|
|Contributors: ||NTOU:Department of Communications Navigation and Control Engineering|
|Issue Date: ||2011-10-21T02:36:02Z
|Publisher: ||17th IASTED International Conference on Modelling and Simulation|
|Abstract: ||Abstract:During GPS satellite data process, precise carrier phase observables are adopted to achieve high positioning accuracy. However, the high correlation between the receiver clock bias and the GPS-determined height components make the vertical accuracy worse than the horizontal accuracy theoretically, even the double-difference phase model still cannot solve this problem. Therefore, this paper proposes a de-correlation technique to improve the height accuracy by calibrating the receiver clock bias. The improvement of the proposed decorrelation technique is verified by Ashtech 3DF data. Based on our experimental results, the determined height accuracy does improve from 0.61 cm to 0.13 cm, by nearly 470%. In addition, when this method is applied for the attitude determination, the standard deviations of estimated attitude angles can be reduced from 0.973° to 0.106° in the ω component, from 0.309° to 0.073° in the ϕ component, and from 0.143° to 0.139° in the κ component, respectively.|
|Appears in Collections:||[通訊與導航工程學系] 演講及研討會|
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