欲發展、自製台灣專屬的雷達測流系統，本文以海洋中心於墾丁貓鼻頭公園KNTN測站的陣列雷達作為研究對象，分析其架構和運作原理，並主要針對該內部關鍵的電路或零組件如接收板、發射電路以及資料擷取系統等進行重製，甚至提出全新具有相同功能之電路，以達到降低採購成本以及提升修改彈性之目的。
首先本文針對系統內既有的接收板架構進行分析與量測，發現當拍頻訊號的頻率較低時會出現振幅較低的情形，為了解決頻率響應的問題，文中透過模擬軟體TINA-TI發現是其中的電容所致，於是排除該狀況後的改良式接收板，就能從提出的DEWETRON數據擷取系統中觀察到各頻率對應之振幅皆為一致。
其次為發射電路的部分，文中同樣頗析原廠發射電路RADCELF的架構以及運作原理，並依相同的概念重現，卻察覺同為D-TACQ電路中的ACQ1001電路無法傳送指定的訊號進行操作。因此本文選擇以AD9956開發板作為主軸，重新設計一款具有相同功能的發射電路進行取代，並使用頻譜分析儀與Keysight 89600 VSA來分析其輸出的調頻連續波的功率和品質，確保能達到預期的功效。
最後則是將上述儀器和電路整合於一雷達閉迴路架構，透過引起不同時間延遲的延遲線，來觀察各種實驗變數的情況下系統的內部延遲以及拍頻變化趨勢的合理性，以滿足現場量測對於先行實驗的需求。此外再將調頻連續波雷達量測目標物距離、速度以及到達角資訊的原理和公式透過程式進行模擬，建構一套完整解算原始數據的流程。

This paper aims to develop and manufacture a dedicated radar flow measurement system for Taiwan. It focuses on the array radar at the KNTN station in Maobitou Park, Kenting, operated by the Ocean Center, as the research subject. The paper analyzes its structure and operational principles, with a primary focus on the internal key circuits or components such as the receiving board, transmission circuit, and data acquisition system. The goal is to reproduce and even propose entirely new circuits with the same functionality to reduce procurement costs and enhance modification flexibility.
Firstly, the paper conducts an analysis and measurement of the existing receiving board structure within the system. It is observed that lower-frequency beat signals result in lower amplitudes. To address the frequency response issue, the paper utilizes TINA-TI simulation software and identifies capacitors as the cause. Consequently, an improved receiving board, free from this condition, allows consistent amplitudes for various frequencies within the proposed DEWETRON data acquisition system.
Next, regarding the transmission circuit, the paper similarly dissects the structure and operational principles of the original RADCELF transmission circuit. Despite reproducing it based on the same concepts, an issue arises with the ACQ1001 circuit within the D-TACQ circuit, preventing the transmission of specified signals. Therefore, the paper opts for the AD9956 development board as the main platform to redesign a transmission circuit with the same functionality. Spectral analysis using a spectrum analyzer and Keysight 89600 VSA is employed to analyze the power and quality of the outputted frequency-modulated continuous wave, ensuring the desired efficacy.
Lastly, the paper integrates the aforementioned instruments and circuits into a closed-loop radar system to assess collective functionality. By employing delay lines causing different time delays, the paper observes the internal delays and beat frequency variation trends under various experimental conditions to meet on-site measurement requirements for preliminary experiments. Additionally, principles and formulas for measuring target distance, speed, and arrival angle using frequency-modulated continuous wave radar are simulated through programming, establishing a comprehensive process for interpreting raw data.

論文審定書 i
誌謝 ii
摘要 iv
Abstract v
目錄 vii
圖次 ix
表次 xiii
第一章 序論 1
1.1前言 1
1.2研究背景與動機 4
1.3高頻測流雷達簡介 8
1.4章節規劃 12
第二章 調頻連續波雷達接收板改良及驗證 14
2.1螺旋天線與調頻連續波雷達系統介紹 14
2.2調頻連續波雷達公式推導 18
2.3接收板元件及架構 20
2.4接收板頻率響應 22
2.4.1接收板頻率響應實驗 23
2.4.2 接收板頻率響應模擬及改善 25
2.4.3改良式接收板頻率響應實驗 29
2.5數據擷取系統驗證 30
第三章 調頻連續波雷達發射電路設計及改良 34
3.1量測儀器及參數介紹 34
3.2 RADCELF發射電路 36
3.2.1 RADCELF發射電路及元件介紹 36
3.2.2 RADCELF發射電路架構及量測實驗 40
3.3 RADCELF發射電路重現實驗 45
3.4改良式發射電路 46
3.4.1相位雜訊量測實驗 46
3.4.2 AD9956開發板介紹及參數設定 50
3.4.3改良式發射電路設計及驗證 52
3.4.4一體成形式發射電路量測實驗 56
第四章 調頻連續波雷達系統整合與分析 59
4.1調頻連續波雷達閉迴路架構量測實驗 60
4.2調頻連續波雷達回波訊號模擬與驗證 77
4.2.1目標物距離估算 77
4.2.2目標物速度估算 82
4.2.3目標物到達角估算 88
第五章 結論與未來展望 95
參考文獻 97

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