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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 李百祺(Pai-Chi Li) | |
dc.contributor.author | Kuei-Da Liao | en |
dc.contributor.author | 廖奎達 | zh_TW |
dc.date.accessioned | 2021-06-08T01:09:43Z | - |
dc.date.copyright | 2014-08-25 | |
dc.date.issued | 2014 | |
dc.date.submitted | 2014-08-18 | |
dc.identifier.citation | [1] FCC, 'First Report and Order ' FCC, vol. 02-48, April 22, 2002.
[2] J. D. Taylor, Ultra-wideband Radar Technology. New York: CRC press, 2001. [3] M. Jalilvand, X. Li, T. Zwick, W. Wiesbeck, and E. Pancera, 'Hemorrhagic stroke detection via UWB medical imaging,' in Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP), pp. 2911-2914, 2011. [4] O. Kosch, F. Thiel, F. S. di Clemente, M. A. Hein, and F. Seifert, 'Monitoring of human cardio-pulmonary activity by multi-channel UWB-radar,' in IEEE Topical Conference on Antennas and Propagation in Wireless Communications (APWC), Italy, pp. 382-385, 2011. [5] M. Klemm, I. J. Craddock, J. A. Leendertz, A. Preece, and R. Benjamin, 'Radar-based breast cancer detection using a hemispherical antenna array-experimental results,' IEEE Trans. Antennas Propag., vol. 57, pp. 1692-1704, 2009. [6] D. Gazelle, A. Beeri, and R. Daisy, 'Signal acquisition and method for ultra-wideband (UWB) radar,' U.S. Patent 7 773 031, Aug. 2010. [7] F. Mohamadi and D. Sharbaugh, 'Hand-held see-through-the-wall imaging and unexploded rrdnance (UXO) detection system,' U.S. Patent 20 110 227 778, Sep. 2011. [8] T.-C. Chen, 'Ultra-wideband radar for human respiratory motion detection and estimation.,' M. S. thesis, National Taiwan Univ., Dept. BEBI, Taipei, Taiwan, 2012. [9] P.-Y. Chao, 'Ultra-wideband phased array radar for short-range imaging applications.' M. S. thesis, Univ. of Cape Town, Dept. Elect. Eng., Cape Town, South Africa, 2009. [10] Hewlett-Packard, 'Pulse and waveform generation with step recovery diodes,' Appl. Note 918, Oct. 1984. [11] J. Han and C. Nguyen, 'A new ultra-wideband, ultra-short monocycle pulse generator with reduced ringing,' IEEE Trans. Microw. Wireless Compon. Lett., vol. 12, pp. 206-208, 2002. [12] P. Protiva, J. Mrkvica, and J. Macháč, 'A compact step recovery diode subnanosecond pulse generator,' Microw. Opt. Technol. Lett., vol. 52, pp. 438-440, 2010. [13] O. Seunghyun and D. D. Wentzloff, 'A step recovery diode based UWB transmitter for low-cost impulse generation,' in IEEE Int. Conf. UWB, pp. 63-67, 2011. [14] Z. N. Low, J. H. Cheong, and C. L. Law, 'Low-cost PCB antenna for UWB applications,' IEEE Antennas Wireless Propag. Lett., vol. 4, pp. 237-239, 2005. [15] T. S. P. See and C. Zhi Ning, 'An ultrawideband diversity antenna,' IEEE Trans. Antennas Propag., vol. 57, pp. 1597-1605, 2009.. [16] Z. Xiaodong and A. G. Yarovoy, 'A sparse aperture MIMO-SAR-based UWB imaging system for concealed weapon detection,' IEEE Trans. Geosci. Remote Sens., vol. 49, pp. 509-518, 2011. [17] M. Jalilvand, E. Pancera, L. Xuyang, T. Zwick, and W. Wiesbeck, 'A sparse synthetic aperture-based UWB medical imaging system,' in IEEE Proc. GeMIC, pp. 1-4, 2011. [18] Z. Xiaodong, A. G. Yarovoy, T. Savelyev, and L. Ligthart, 'Modified Kirchhoff Migration for UWB MIMO array-based radar imaging,' IEEE Trans. Geosci. Remote Sens., vol. 48, pp. 2692-2703, 2010. [19] C. Kasai and K. Namekawa, 'Real-time two-dimensional blood flow imaging using an autocorrelation technique,' in IEEE 1985 Ultrason. Symp. Proc., pp. 953-958, 1985. [20] D. H. Turnbull, P. K. Lum, A. T. Kerr, and F. S. Foster, 'Simulation of B-scan images from two-dimensional transducer arrays,' in IEEE 1994 Ultrason. Symp. Proc., vol. 2, pp. 769-773, 1990. [21] P. K. Weber, R. M. Schmitt, B. D. Tylkowski, and J. Steck, 'Optimization of random sparse 2-D transducer arrays for 3-D electronic beam steering and focusing,' in IEEE 1994 Ultrason. Symp. Proc., , pp. 1503-1506 vol. 3, 1994. [22] 'Logic Threshold Voltage Levels,' http://www.interfacebus.com/voltage_threshold.html, Feb. 29, 2012. [23] M. I. Pettersson, 'Detection of moving targets in wideband SAR,' IEEE Trans. Aerosp. Electron. Syst., vol. 40, pp. 780-796, Jul 2004. [24] P.-C. Li and M.-L. Li, 'Adaptive imaging using the generalized coherence factor,' IEEE Trans. Ultrason. Ferroelectr. Freq. Control, vol. 50, pp. 128-141, 2003. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/18523 | - |
dc.description.abstract | 本研究的主旨是利用電子掃描控制之二維超寬頻雷達陣列組成二維合成孔徑,做三維影像並偵測與評估三維的人體呼吸運動。而本研究的主要貢獻為利用電子控制掃描,配合印刷天線陣列,組成二維交叉型陣列天線,並以此系統擷取三維影像。三維影像的較二維影像多出一個維度的資訊,其定位能力更佳,更符合真實的三維空間,也因此應用層面更廣,是以二維呼吸偵測有改進成為三維呼吸偵測之必要。在先前的研究中,合成孔徑是利用步徑馬達驅動喇叭天線,沿水平方向移動組合而成。但此方法在應用時有兩項問題:一者機械式掃描速度掃描速度慢,二者在系統架構上需外接馬達、軌道等。因此,我們提出以寬頻且具吸收性的射頻多工器做電子式掃描以解決上述之兩項問題。另外,我們目標將系統信號中心頻率由1.5 GHz提升到3 GHz,以符合聯邦通訊傳播委員會對於超寬頻信號免執照頻段的使用。另外,在發射信號相同部分頻寬前提下,提高中心頻率可使整體頻寬變寬,藉以得到較好的影像解析度。然而這部分的電路設計雖然達成頻率提高和增加頻寬,但產生信號的能量不足,因此後續系統中仍使用中心頻率1.5 GHz之發射電路。最後,我們利用三維超寬頻雷達成像系統,搭配呼吸偵測演算法: 廣義非同調性因子(generalized incoherence factor, GICF)以及濾波器組廣義同調性因子(filter bank assisted generalized coherence factor, FBGCF),進行三維人體呼吸運動之偵測與評估,但偵測結果無法準確找出受試者位置,推測是天線發射能量不足、天線之間的串音,以及系統信號延遲時間校正不夠精確的緣故。 | zh_TW |
dc.description.abstract | The purpose of this study is to using electronic scanning 2D PCB array antenna to achieve 3D imaging as well as 3D respiratory motion detection and estimation. The proposal for 3D imaging is because the positioning ability for 3D imaging is better than 2D imaging with providing additional dimension in real case and applications. The 2D array antenna applied in this study is a X-shaped array antenna. The imaging and the good positioning will be based on the use of UWB signal. The 1D synthetic aperture in previous study is contributed to mechanical scanning by step motor. However, the scanning speed and the setup time for mechanical scanning are concerns when it comes to applications. Therefore, using electronic scanning to scan over our array antenna is proposed. The center frequency of transmitted signal should follow the FCC defined unlicensed band for UWB use. Consequently, the transmission circuit is redesigned to generate signal with center frequency at 3GHz. Under the same fractional bandwidth, the bandwidth would increase and the resolution would be better with the raise of center frequency. However, in this study, the circuits meeting our proposal could not generate signals with enough power. Hence the original 1.5 GHz is still applied in the following system. Finally, 3D UWB imaging system and the respiration detection algorithm, generalized incoherence factor (GICF) and filter bank assisted generalized coherence factor (FBGCF) are applied to achieve both 3D imaging and human respiratory motion detection and estimation. However, the detection outcome is not ideal due to poor system performance such as antenna power gain, crosstalk, and the inaccurate system delay calibration. | en |
dc.description.provenance | Made available in DSpace on 2021-06-08T01:09:43Z (GMT). No. of bitstreams: 1 ntu-103-R01945004-1.pdf: 8675887 bytes, checksum: 59795967be8add4316243d4ac4280357 (MD5) Previous issue date: 2014 | en |
dc.description.tableofcontents | 中文摘要 II
ABSTRACT III 目錄 IV 圖片目錄 VII 第1章 緒論 1 1.1 超寬頻雷達系統 1 1.1.1 超寬頻信號 1 1.1.2 軸向解析度與軸向距離計算 2 1.1.3 超寬頻信號之脈衝波形 3 1.1.4 超寬頻信號之應用 5 1.2 先前研究之超寬頻一維合成孔徑雷達 6 1.3 研究動機 10 1.4 論文架構 12 第2章 超寬頻脈衝信號發射電路設計 13 2.1 本章簡介 13 2.2 升頻電路可能設計方式 13 2.3 以階躍恢復二極體為主之脈衝發射電路 14 2.4 結合帶通濾波器和功率放大器之脈衝發射電路 18 2.5 脈衝信號發射電路比較與總結 23 第3章 使用印刷電路天線進行一維人體呼吸偵測 25 3.1 本章簡介 25 3.2 印刷電路天線介紹 25 3.3 利用印刷電路天線進行一維呼吸偵測與評估 29 3.3.1 實驗系統及參數設定 29 3.3.2 利用自相關函數方式評估人體呼吸運動 30 3.3.3 實驗結果 34 3.4 利用印刷電路天線進行一維呼吸偵測與評估 40 第4章 二維陣列系統架設以及三維影像偵測評估人體呼吸 41 4.1 本章簡介 41 4.2 陣列單元距離與輻射分布型態 41 4.3 交叉型二維陣列 44 4.3.1 交叉型二維陣列排列 44 4.3.2 射頻多工器連接陣列與發收信號模組 46 4.4 三維超寬頻雷達影像系統 49 4.4.1 實驗系統及參數設定 49 4.4.2 接收信號之前處理 50 4.4.3 三維波束形成 51 4.4.4 呼吸偵測演算法-廣義非同調性因子 52 4.4.5 呼吸偵測演算法-濾波器組廣義同調性因子 54 4.4.6 合成孔徑聚焦技術應用於呼吸偵測 55 4.5 實驗 – 兩金屬反射物 58 4.6 實驗 - 呼吸者與一金屬反射物 60 4.6.1 三維波束形成結果 61 4.6.2 三維波束形成與GICF結果 63 4.6.3 三維波束形成與FBGCF結果 65 4.7 實驗 - 兩呼吸者在成像空間中 67 4.7.1 三維波束形成結果 67 4.7.2 三維波束形成與GICF及FBGCF結果 69 第5章 討論結論以及未來工作 73 5.1 討論 73 5.1.1 升頻電路的設計 73 5.1.2 印刷天線之使用 74 5.1.3 二維陣列天線架設 75 5.1.4 實驗信號處理 79 5.2 結論 83 5.3 未來工作 84 Appendix A 86 References 87 | |
dc.language.iso | zh-TW | |
dc.title | 利用超寬頻陣列雷達實現三維之呼吸運動偵測 | zh_TW |
dc.title | Using Ultra-wideband Array Radar System for 3D Human Respiration Detection | en |
dc.type | Thesis | |
dc.date.schoolyear | 102-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 劉建宏(Jian-Hung Liu),鄭耿璽(Geng-Shi Jeng),沈哲州(Che-Chou Shen) | |
dc.subject.keyword | 超寬頻脈衝產生電路,超寬頻雷達陣列,三維呼吸偵測, | zh_TW |
dc.subject.keyword | UWB impulse generator,UWB array radar,3D respiration detection, | en |
dc.relation.page | 89 | |
dc.rights.note | 未授權 | |
dc.date.accepted | 2014-08-18 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 生醫電子與資訊學研究所 | zh_TW |
顯示於系所單位: | 生醫電子與資訊學研究所 |
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