在本論文中，首先針對現有的定位方法，分析在台灣的環境下之定位精準度，且為了改善使用結合到達時間差(TDOA)與到達頻率差(FDOA)之雙星干擾源定位技術動輒數十公里，甚至數百公里的定位誤差，吾人提出一種複合式的定位技術，考慮在雙星定位技術所產生的誤差橢圓內，使用一滯留於空中特定高度的直升機，達成多波束天線(MBA)的定位技術，此技術主要利用干擾信號到達角度的估測來達成輔助定位，能有效的降低定位誤差，進而提高定位精準度，減少干擾源搜尋面積，並快速地找出干擾源的位置。

In this thesis, the positioning accuracy of the techniques in Taiwan’s environment can be estimated by using the existing positioning algorithms. The satellite interferer location techniques for geostationary satellites can produce an error ellipse by measuring time difference of arrival (TDOA) and frequency difference of arrival (FDOA) between two signals which pass through the different uplink and downlink path of two satellites. In order to reduce the positioning error of the TDOA/FDOA technique, we proposed a method that using a helicopter to achieve the multibeam antenna (MBA) positioning. Using angle measurement, the positioning is carried out by fitting the measured power ratio of the interference signals received by the multibeam antenna to the gain ratio of the beams as a function of the incoming angle. This hybrid positioning technique was shown to reduce the positioning error and search area of the error ellipse.

致謝 I
中文摘要 III
英文摘要 IV
目錄 V
圖表目錄 VII
第一章 序論 1
1.1 研究背景與動機 1
1.2 論文架構 6
第二章 衛星干擾源定位技術 7
2.1 衛星通道傳播特性 7
2.1.1 都普勒效應(Doppler Effect) 7
2.1.2 電離層之時間延遲現象 9
2.1.3 衛星軌道之攝動現象 9
2.2 衛星干擾源定位技術 10
2.2.1 單一到達時間差(TDOA-Only)定位法 10
2.2.2 單一到達頻率差(FDOA-Only)定位法 17
2.2.3 結合TDOA與FDOA定位法 19
2.2.4 衛星上多波數天線(Multi-Beam Antenna)定位法 28
2.2.5 結合TDOA與干涉(Interferometry)技術定位法 28
2.2.6 結合輻向基底函數(Radial Basis Function)類神經法與MBA技術的定位法 29
第三章 衛星干擾源定位技術之效能評估與模擬 30
3.1 TDOA-only定位法 30
3.1.1 定位精準度分析 30
3.1.2 數值模擬 32
3.1.3 模擬結果討論 44
3.2 FDOA-only定位法 45
3.2.1 定位精準度分析 45
3.2.2 數值模擬 46
3.2.3 模擬結果討論 55
3.3 結合TDOA/FDOA定位法 56
3.3.1 定位精準度分析 56
3.3.2 數值模擬 57
3.3.3 模擬結果討論 68
3.4 MBA定位法 69
3.4.1 定位精準度分析 69
3.4.2 數值模擬 70
3.4.3 模擬結果討論 75
第四章 複合式衛星干擾源定位技術之效能評估與模擬 76
第五章 結論 83
參考文獻 85

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