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題 名 | GPS Common View Based Primary Reference Source for Telecommunications Networks=使用GPS共同觀測法的電信網路主參考信號源 |
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作 者 | 施江霖; 賀嘉律; | 書刊名 | Journal of the Chinese Institute of Electrical Engineering |
卷 期 | 8:2 2001.05[民90.05] |
頁 次 | 頁171-176 |
分類號 | 448.6 |
關鍵詞 | 頻率偏離; GPS共同觀測法; 國家標準頻率; 主參考信號源; Frequency offset; GPS common view; National frequency standard; Primary reference source; |
語 文 | 英文(English) |
中文摘要 | 隨著高速網路的引進,電信網路對於主參考信號源的性能需求較之以往更為嚴謹 。 GPS 共同觀測法是一種可靠的傳時方式,本文提出一個使用 GPS 共同觀測法,使能夠同 步到國家標準頻率的主參考信號源。 目前,國家標準頻率的準確度優於 5 × 10 �笐堙A本 文提出的方法可以讓主參考信號源的準確度接近國家標準頻率。此項做法目前已用於提供中 華電信網路的主參考信號源。性能顯示,一個原來的頻率準確度約為 -3 × 10 ���C的銫原 子鐘經由本方法可以其提昇到 1 × 10 �笐堙A而且幾乎不影響其穩定度。 |
英文摘要 | With the introduction of high-speed networks, today's telecommunications networks require a more accurate primary reference source (PRS) than convetional ones. A PRS synchronized to the national frequency standard (NFS) based on the technique of GPS common view, a powerful means for time and frequency transfer, is proposed in this paper. The proposed PRS achieves performance comparable to the NFS, which has frequency accuracy better than 5 ×�笐�. The new approach has been used to provide a synchronization source for the networks of Chunghwa Telecom. Performance results indicate that a PRS with a frequency offset originally of -3 × 10 ���C can be improved to 1 × 10 �笐�. |
本系統中英文摘要資訊取自各篇刊載內容。