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題 名 | Ambiguity and Position Search Algorithms of GPS Carrier Phase Processing=GPS載波相位處理之模稜與位置搜尋法則 |
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作 者 | 吳究; 林修國; 游豐吉; | 書刊名 | 中國工程學刊 |
卷 期 | 20:6 1997.11[民86.11] |
頁 次 | 頁643-650 |
分類號 | 440.98 |
關鍵詞 | 整數模稜; 相位餘弦函數; 電離層估計; 定位精度; Integer ambiguity; Phase cosine function; Ionospheric estimation; Positioning accuracy; |
語 文 | 英文(English) |
中文摘要 | 為實踐高精度GPS衛星定位,本文擬比較兩類法則。以求定相位模稜參數為基礎之一類 法則,使用最小二乘搜尋技術。與模稜函數法有關卻與其不同之另一類法則,利用同樣的最小二乘 技術,以達成最後之位置收斂。真實位置解答之搜尋是在相位模稜域內,或在三維幾何空間內。藉 單頻和雙頻載波相位觀測量,測試過這兩類法則。前一法則的相位處理對周波脫落具敏感性,但後 -法則僅有較小收斂區間。經分析快速靜態與動態GPS衛星定位實驗時之方法成效,對短距離基線 而言,獲得既精確(公分級)且可資比較之位置解答。法則間能滿足支援功用,而提昇GPS科技求 定點位之可靠度。 |
英文摘要 | For high-precision GPS satellite positioning, two search algorithms are compared in this paper. One algorithm, which is based on an approach for resolving phase ambiguities, uses a least-squares search technique. The other algorithm is related to an ambiguity function method but differs from it in that the final positional convergence is achieved by employing the same least-squares technique. The search for a true position solution is conducted either in phase ambiguity space or in three-dimensional geometric space. The two algorithms are tested, using both single-and dual-frequency carrier phase measurements. The former phase processing is susceptible to cycle slips, but the latter has relatively small convergence ranges. Methodological performance for both rapid static and kinematic GPS positioning experiments is analyzed, leading not only to centimeter-level, but also comparable position solutions for short-range baselines. The algorithms can fulfil supportive functions, which increases the reliability of the GPS-based point determination. |
本系統中英文摘要資訊取自各篇刊載內容。