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題 名 | 野外作業GPS接收儀天線相位中心之校正=Antenna Phase Centre Calibration of GPS Positioning at Field Work |
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作 者 | 徐博賢; 江國明; | 書刊名 | 黃埔學報 |
卷 期 | 36 1999.01[民88.01] |
頁 次 | 頁243-255 |
分類號 | 440.913 |
關鍵詞 | 天線相位中心; 電子中心; 單差法; 物理中心; Antenna phase centre; Electrical centre; Single difference; Physical centre; |
語 文 | 中文(Chinese) |
中文摘要 | 波斯灣戰爭期間,聯軍藉全球衛星定位系統(GPS)優異之定位性能,掌握了整 個戰區的時空關係,使聯軍大至於軍團小至於搜索單兵,都能各就其位,各司其職,迅速的 打敗伊拉克光復了科威特,這僅是 GPS 在軍事上的用途,世界各國以 GPS 從事高精度之定 位測量,已隨著衛星佈設完成與信號處理技術的成熟,日漸增加它的需求,各種提昇精度的 模式亦相繼提出, 也因此天線相位中心變化模式的研究, 益形重要。 雖然, Schupler & Clark 及 UNAVCO 曾對常用之天線,在實驗室內測出各種可能之相位變化,但仍有部份天線 (含新上市者)未包含在內,造成使用者在野外作業時之不便。因此,本研究即以設立野外 天線校驗場, 利用載波相位處理技術,並以已知相位中心之天線為參考依據,再分別以 L1 ,L2,L0 以及對流層折射改正參數等方式,探求適合之模式,期能解決此項問題。 |
英文摘要 | During Persian Gulf War, due to the excellent positioning characteristics of GPS, it leaded to the UA handling spatial information completely. However, it is only one kind of application in GPS. Using GPS for high accuracy positioning is gradually increasing its importance and requirements due to the full constellation of operating satellites and the mature techniques of signal processing. Many models for increasing accuracy have been proposed recently. Hence, the calibration of antenna phase centre is very important. Although Schupler & Clark and UNAVCO provided a few sets of antenna phase centres by the test of the anechoic chamber, it still has some types of antennas without involving in this test. The absence of any corrections for the phase variations will cause the error of baseline vector, especially in height. It is especially noticeable for baselines using mixed antennas. Hence, a series of antenna tests trying to deal with these problems will be showed in this paper. |
本系統中英文摘要資訊取自各篇刊載內容。