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 藉由格雷編碼激發之超音波都卜勒偵測方法
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刊登日期：2015/08/04 |
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| ‧ 專利名稱 |
藉由格雷編碼激發之超音波都卜勒偵測方法 |
| ‧ 專利證書號 |
I507709
US9097794
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| ‧ 專利權人 |
國立臺灣大學 |
‧ 專利國家
(申請日) |
中華民國 (2013/03/20)
美國 (2013/05/07)
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| ‧ 發明人/PI |
沈哲州,
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| ‧ 單位 |
生醫電子與資訊學研究所
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| ‧ 簡歷/Experience |
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| 技術摘要 / Our Technology： |
An ultrasound Doppler detection method with Golay-encoded excitation is used to obtain the flow information of a moving object. A first Golay code is transmitted to the moving object for a reflection signal of the first Golay code and a second Golay code is transmitted to the moving object for a reflection signal of the second Golay code after waiting for a pulse repetition interval. The received reflection signals are match-filtered to generate a first and a second wave. The above steps are repeated several times. Then, a slow-time filter in the Doppler frequency domain whose low-pass cut-off frequency is a quarter of the pulse repetition frequency is used to filter out the first sidelobes of the first waves and the second sidelobes of the second waves. Finally, the ultrasound Doppler detection is formed according to the first mainlobes of the first waves and the second mainlobes of the second waves.
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| 專利簡述 / Intellectual Properties： |
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聯繫方式 / Contact： |
| 臺大產學合作總中心 / Center of Industry-Academia Collaboration, NTU |
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| Email：ordiac@ntu.edu.tw |
電話/Tel：02-3366-9945 |
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