臺灣博碩士論文加值系統

本論文結合連續波與自我注入鎖定雷達架構，以實現同時具有姿勢判別與生理感測的混合式單脈衝雷達，並利用本論文提出的大擺幅校正及圓弧形校正兩大校正方法，能夠不受金屬板擺設位置及角度影響校正的效果，增加系統整體的準確性。在生理感測方面，本系統和差兩輸出通道的基頻訊號，經由互相關的演算法進行生理訊號提取，能讓生理感測的結果更加明顯，不會受到兩和差通道訊號振幅不同而影響系統的表現，以提高感測的準確性。並利用跌倒前後的單脈衝比的差異，或利用簡單的和差作圖的斜率改變來判斷人體姿勢的變化，以達到能有效偵測目標跌倒的目的。

This thesis presents a hybrid monopulse radar system by combining the self-injection-locked (SIL) radar with the continuous-wave (CW) radar to detect posture and vital signs of a human subject. The system uses the proposed large swing and arc-trajectory calibration methods to improve the accuracy of detection regardless of the position and angle of the metal plate that is setup for calibration. Moreover, the vital signs of the human subject can be extracted more accurately from the cross-correlation of the output baseband signals of the sum and difference channels because of the reduced effect of the difference in signal magnitude between these two channels on the extraction of vital signs. The fall detection can be made by analyzing the monopulse ratios before and after the fall or the change of the slope in the sum versus difference plot.

論文審定書....................................................................................................... i
誌謝 ................................................................................................................. ii
摘要 ................................................................................................................ iii
Abstract .......................................................................................................... iv
目錄 ................................................................................................................. v
圖次 ............................................................................................................... vii
表次 ................................................................................................................ ix
第一章 序論 .................................................................................................... 1
1.1 研究背景與動機 ....................................................................................... 1
1.2 單脈衝雷達 ............................................................................................... 3
1.3 姿勢判別研究簡介 ................................................................................... 7
1.4 章節規劃 ................................................................................................... 9
第二章 系統原理與校正方法 ...................................................................... 10
2.1 自我注入鎖定技術簡介 ......................................................................... 10
2.2 單脈衝比 ................................................................................................. 12
2.3 系統校正方式 ......................................................................................... 14
2.31圓弧形校正方式 .................................................................................... 14
2.32大擺幅校正 ............................................................................................ 17
2.4 互相關演算法 ......................................................................................... 20
第三章 姿勢判別與生理感測 ...................................................................... 21
3.1 系統架構介紹 ......................................................................................... 21
3.2 天線和差場型 ......................................................................................... 24
3.3 評估穩定性實驗 ..................................................................................... 26
3.4 校正程序 ................................................................................................. 28
3.5 姿勢判別 ................................................................................................. 34
3.6 生理感測 ................................................................................................. 39
3.7 跌倒應用 ................................................................................................. 44
第四章 結論與未來展望 .............................................................................. 50
參考文獻 ....................................................................................................... 51

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