대한의용생체공학회:의공학회지 (Journal of Biomedical Engineering Research)
- 제6권1호
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- Pages.31-36
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- 1985
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- 1229-0807(pISSN)
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- 2288-9396(eISSN)
A-mode의 분해능향상을 위한 디지탈 신호처리
Digital Signal Processing for Improvement of Resolution in A-mode
초록
In this paper, we describe the digital signal-processing for ultrasonic echo signals for the improvement of range resolution. The problem is to find the magnitude of analytic signals that are consistent with the arrival-rate of energy. It is also baaed upon the fact that the shapes of echo signals do not change, although the ampli- tudes and widths of the echo signals become smaller and wider than those of the transmitted signals. We have made the improvement in range resolution by using the quadrature-low pass filter and the area filter which are made on the basis of the theory discussed above.
키워드