本論文結合注入鎖定與被動式雷達技術，發展一套能於短距離偵測手掌靠近、遠離以及生理徵象的都卜勒雷達，自身無須產生發射功率，僅依據外界的行動通訊訊號，即可作為感測所需之雷達訊號源。透過接收機正交解調電路的I與Q通道，當手勢靠近雷達時，I通道波形會領先Q通道的波形，同時兩通道振幅會逐漸上升；當手勢遠離雷達，Q通道波形會領先I通道波形，同時兩通道振幅會逐漸減少。
此外透過致動器上架設金屬板，實現一個規律運動且傳動距離可控制的規律待測物，藉此實現小振幅傳動模擬心跳位移以及大振幅傳動模擬手勢位移，並探討行動通訊訊號以及電路內部多種因素的影響，如訊號調制方式、調制符元率、傳輸延遲差以及訊號源功率大小等。在所有考量因素的量測結果中，小振幅規律運動與大振幅規律運動皆能與預期的結果相符，證明此雷達運用行動通訊訊號作為雷達訊號源的構想是可以實踐的。
本論文除了利用各種行動通訊訊號成功量測單次手勢、複合手勢的訊號之外，亦利用64QAM調制的行動通訊訊號，成功地量測出呼吸以及心跳等生理徵象。

This thesis presents a passive radar which is able to detect not only hand gestures, but also vital sign signals based on Doppler effect. The wireless communication signals transmitted from mobile devices are utilized as the signal sources in this radar for detecting a moving target. The output hand-gesture baseband signal of the injection locked receiver quadrature channel the demonstrate that the waveform of I channel leads that of Q channel and their waveform amplitudes increase as the hand moves toward the radar. On the other hand, as the hand moves away from the radar, the waveform of Q channel leads that of I channel and their waveform amplitudes decrease.
The actuator with an attached metal is used to perform a regular movement with adjustable displacement. In this experiment, the small and large displacements of the moving metal plate are 1mm and 5cm displacement, respectively. Moreover, other factors such as modulation scheme, symbol rate, delay mismatch and transmit signal power are taken into consideration.
Based on the experimental results, this radar can detect simple hand gesture, composite hand gesture and a vital sign signal successfully using a transmitted 64QAM modulation signal.

論文審定書 i
誌謝 ii
摘要 iii
Abstract iv
目錄 v
圖次 vii
表次 x
第一章 緒論 1
1.1 研究背景與動機 1
1.2 手勢辨識系統介紹 3
1.3 論文章節組織 12
第二章 都卜勒雷達手勢感測系統相關理論 13
2.1 應用於手勢感測系統之自我注入鎖定理論 13
2.1.1 廣義注入鎖定行為模式探討 13
2.1.2 振盪器之等效注入鎖定時間 16
2.2 手勢感測系統正交解調電路設計 19
2.3 致動器實現規律性運動 22
第三章 都卜勒雷達手勢感測系統實驗結果與討論 25
3.1 都卜勒手勢感測系統電路 25
3.2 實驗變因探討 29
3.2.1 操縱變因一：調制方式（Modulation） 32
3.2.2 操縱變因二：符元率（Symbol rate） 35
3.2.3 操縱變因三：內部傳輸延遲差 37
3.2.4 操縱變因四：行動通訊訊號功率 39
3.3 手勢感測實驗結果 41
3.3.1 致動器規律移動量測結果 41
3.3.1 實際手勢感測與生理徵象結果 42
3.3.2 手勢感測特徵討論 45
第四章 結論 52
參考文獻 53

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