• 沒有找到結果。

第五章 結論與建議

第二節 建議

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第二節 建議

由於 IGS 提供之資料為規則網格點,對於曲面擬合的幾何圖形來說要 注意共線的部分,另外同步解算部分配合 QPSO 輔助求解時需要考量尋解 範圍,此部分除了多加嘗試外只能參考 IGS 的解來縮小範圍,否則有時會 有耗時過長的問題存在,未來若是需要直接以原始觀測資料來預估 VTEC 與 RDCB 值,則可能會面臨需要擴大搜索範圍等降低效率的情形,而如何 提升搜尋效率也將是未來討論的重點。另一個關鍵問題則是 RDCB 與 VTEC 同步求解時會有兩種範圍,較快速的作法是分開來尋解(即對演算法定兩種 範圍),然而這樣會有重覆解算降低性能的情況,目前採用的方式是 RDCB 使用與 TEC 相同的電子含量做為單位,以能達成同步求解之任務。

本研究提出能有效提升泰勒展開式與球諧函式的解算方法,能夠有效利 用原始觀測量算出範圍中各區域的 VTEC 值,且能求得更接近 IGS 提供之 資料,未來若是有應用上之需要也可加入該區域之 e-gps 資料提升區域電離 層總電子含量之精度。

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立政治大學地政學系碩士論文:臺北。

常青,張東和,肖佐,張其善,2001,『GPS 系統硬體延遲估計方法及其在 TEC 計算中的應用』,地球物理學報,第 44 卷第 5 期:596-601。

王斐、吳曉莉、周田、李宇翔,2014,『不同Klobuchar 模型參數的性能比較』, 測繪學報,第43 卷第 11 期:1151-1157。

柳景斌,2008,『基於地基 GPS 的區域電離層 TEC 球冠諧分析及預報』,武 漢大學大地測量學與測量工程博士論文:中國。

柳景斌、王澤民、王海軍、章紅平,2008,『利用球冠諧分析方法和GPS 數據 建立中國區域電離層 TEC 模型』,武漢大學學報,第33 卷第 8 期:792-795。

陳耀鐘、高書屏,2014,『利用 GPS 觀測量估計區域性電離層 VTEC 與接收 儀差分硬體延遲偏差的新方法: LS-MARS』,國立中興大學土木工程學系,

臺中。

陳耀鐘,2014,『利用 GPS 觀測量進行區域性電離層垂直全電子含量建模與 電離層電腦斷層掃描的新方法:LS-MARS』,國立中興大學土木工程學系,

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林老生、克利思.理哲斯, 1999,『利用 GPS 觀測量構建即時的區域電離層 模型之研究』,測量工程, Vol.41, No.1, pp.5-32.

葉欣豪,2013,『利用最小支持向量機進行電離層全電子含量預報之研究』,

國立中興大學土木工程學系碩士論文:臺中

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