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研究生:蕭一凡
研究生(外文):I-Fan Hsiao
論文名稱:以DVB-T為信號源之被動雷達組偵測與定位研究
論文名稱(外文):The Study of Target Detection and Location for Passive Bistatic Netted Radar System Based on DVB-T Signal Source
指導教授:馬杰馬杰引用關係
指導教授(外文):Jeich Mar
學位類別:碩士
校院名稱:元智大學
系所名稱:通訊工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2011
畢業學年度:99
語文別:中文
論文頁數:83
中文關鍵詞:能量偵測匹配濾波器偵測循環平穩偵測分集處理時差定位
外文關鍵詞:Energy DetectorMatched Filter DetectionCyclostationary DetectionDiversityTDOA
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本論文以地面數位電視廣播(Digital Video Broadcasting-Terrestrial, DVB-T)信號為信號源,進行雙基被動雷達組(Passive Bistastic Netted Radar)偵測與定位研究,分析模擬能量偵測(Energy Detector)、匹配濾波器偵測(Matched Filter Detection) 以及循環平穩偵測(Cyclostationary Detection)等三種偵測器對目標物反射之DVB-T信號,在設定之誤警率下之偵測性能。並利用多雷達接收站分集處理(Diversity)的方式,改善其偵測性能。基於多雷達接收站之架構,可利用4台雷達接收站對飛行目標反射信號以相關處理產生三組接收站台之時差估測(Time Delay Estimation)值,以時差定位(Time Difference of Arrival, TDOA)方法將三組雙曲面在三維空間中之交點定位出目標物位置之粗估值,並以高斯牛頓差補法(Gauss-Newton interpolation method)定位飛行目標物軌跡,計算估測之精確度。

The aim of this thesis is the study of target detection and positioning for passive bistatic netted radar system (PBNRS) based on digital video broadcasting-terrestrial (DVB-T) signal source. First, the detection performance of energy detector, matched filter detector and cyclo-stationary detector on the DTV-B reflected signal is analyzed and simulated. The multi-receivers use the diversity methods to further improve the detection performance. Then the passive location system including one transmitting signal and four receivers is investigated. Firstly, the cross correlation method is used to estimate the time difference of arrival (TDOA) between a pair of receivers. Secondly, three pair of TDOA values is used to locate the target position. Thirdly, the measured TDOAs and coordination of the four receivers are employed to estimate the locus of flight target and evaluate the circular error probability using Gauss-Newton interpolation algorithm.

中文摘要 i
英文摘要 ii
致謝 iii
目錄 iv
表目錄 vi
圖目錄 vii
符號說明 x
第一章 緒論 1
1.1 研究動機與目的 1
1.2 研究方法與項目 2
1.3 章節簡介 2
第二章 DVB-T信號與被動雷達 3
2.1 DVB-T系統工作原理 3
2.2 DVB-T系統簡介 4
2.2.1 DVB-T傳送機架構 5
2.2.2 傳輸多工與能量分散 6
2.2.3 外編碼 7
2.2.4 外交錯編排器 7
2.2.5 內編碼器 8
2.2.6 內交錯編排器 10
2.2.7 信號星雲圖及調變 12
2.2.8 碼框結構 13
2.2.9 虛擬隨機二位元序列和導引信號 14
2.2.10 傳輸參數信號 18
2.2.11 保護區間 20
2.3 被動雷達 21
2.3.1 雙基被動雷達 21
2.3.2 多基被動雷達 22
2.4 混淆函數 23
第三章 信號偵測原理 25
3.1 誤警率的意義 25
3.2 信號偵測方法 25
3.2.1 能量偵測 26
3.2.2 匹配濾波器偵測 27
3.2.3 循環平穩偵測 28
3.3 合作式雷達分集處理原理 29
3.3.1 選擇合併法 31
3.3.2 最大比率合併法 32
3.3.3 等增益合併法 32
第四章 時差定位原理與定位精確度分析 33
4.1 時間延遲估測原理 34
4.2 定位之方法 35
4.2.1 訊號強度分析法 35
4.2.2 尋向定位法 36
4.2.3 訊號抵達時間定位法 37
4.2.4 訊號抵達時間差定位法 38
4.2.5 混和型定位法 39
4.3 功率傳送 40
4.4 定位精確度分析 42
4.4.1 圓機率誤差 42
4.4.2 高斯-牛頓差補法 42
第五章 數值模擬分析 47
5.1. 系統模擬參數 47
5.2. 混淆函數分析 49
5.3. 偵測性能模擬 53
5.4. 飛行目標物定位與軌跡估測模擬 68
第六章 結論 80
參考文獻 81


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