虛擬衛星於提昇機場精確進場之分析－以松山與中正機場為例

Performance Analysis on Siting Pseudolites for the Precision Approach at Taipei Sungshan and CKS Airports

卓大靖(Dah-Jing Jwo) ； 呂協錦(Hsieh-Chin Leu) ； 金國斌(Kuo-Pin Chin)

《中國航空太空學會學刊》 34卷2期 (2002/06) Pp. 103-113

https://doi.org/10.6124/TAASRC.200206_34(2).02

摘要

本文主要研究架設機場虛擬衛星對於飛機精確進場導航精度可獲得之提昇，並以國內台北松山與中正機場爲對象，進行分析。首先，吾等模擬出全球定位系統(GPS)之軌道運行，解算出在機場附近GPS衛星星群分佈下，整天內當地之精度稀釋園子（Dilution of Precision，簡稱DOP）值。接著將分析當有任何一顆GPS衛星無法正常運作時，對於DOP值影響之大小，進而探討架設虛擬衛星後所獲得之改善。此外，由於松山機場與中正國際機場相距不遠，屬於虛擬衛星訊號可傳達之範圍內，故將經由模擬方式以瞭解共用虛擬衛星所獲得之性能提昇程度。文中將對幾種可行性方案，例如虛擬衛星適當位置之選擇與數目之考量等進行分析與評估，以提供整體設計評估時做爲適當取捨之參考依據。

關鍵字

全球定位系統 ； 虛擬衛星 ； 精度稀釋因子

並列摘要

The improved navigation accuracy by using the airport pseudolites for aircraft precision approach is investigated. The Taipei Sungshan and Chiang Kai-Shek (CKS) airports are selected as our design cases. A simulation on GPS constellation and the dilution of precision (DOP) for 24 hours will first be conducted and verified by comparing the results with those based on practical data. Influence on DOP due to outage of individual GPS satellites will be. evaluated with and without the aid of pseudolites Since the Sungshan and CKS aiports are within the pseudolite signal transmission region, performance evaluation on sharing pseudolites will also be conducted. Topics on selecting the number of pseudolites and their suitable position(s) will then be discussed. The results can be providedt to the designers as the imformation for making trade off with some other consideration.

並列關鍵字

GPS ； Pseudolite ； Di1ution ofPrecision