頁籤選單縮合
題名 | 多路徑對GPS姿態導航影響之研究= |
---|---|
作者 | 賴辰彥; 劉鼎文; |
期刊 | 逢甲學報 |
出版日期 | 19951100 |
卷期 | 28 1995.11[民84.11] |
頁次 | 頁575-588 |
分類號 | 447.85 |
語文 | chi |
關鍵詞 | 多路徑; GPS姿態導航; |
中文摘要 | GPS 姿態導航不像慣性導航具長時間使用累積漂移的問題,是動態差分 GPS 的高 性能應用範疇。其性能指標是以多路徑及接收機雜訊源為考慮的平臺定位精確度,及以接收 機雜訊源為考量的平臺動態頻寬。本文提出計算多路徑的延遲分佈及相位誤差的方法,並對 飛行載具以區域座標系統之 Z 軸做方位角轉動(一個自由度)的姿態移動從事計機模擬。 模擬結果顯示提出的計算方法以及在週邊金屬表面的環境中, 典型的距離誤差均方根值為 10 度( 0.5公分 )。 |
英文摘要 | GPS-based attitude navigation, not subject to the inherent long-term drift of inertial instruments, is the highest performance regime of dynamic differential GPS. Its performance indices are the accuracy of platform pointing with error sources of multipath and receiver noise, and the bandwidth of platform dynamics with error source of receiver noise. This paper proposes a method to calculate delay spread and phase error induced by multipath. A computer simulation is also performed by attitude motion of a flight vehicle corresponding to azimuth rotation (one degree of freedom) about the zenith line. Simulation results show that the proposed calculation method is effective and typical size of different ranging error is 10 degree of phase (0.5cm) rms in the abundant presence of metallic surfaces. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。