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首页> 外文期刊>Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on >Hardware-efficient realization of a real-time ultrasonic target detection system using IIR filters - [correspondence]
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Hardware-efficient realization of a real-time ultrasonic target detection system using IIR filters - [correspondence]

机译：使用IIR滤波器的实时超声目标检测系统的硬件高效实现-[对应]

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摘要

In this study, we address the increased computational demands of a frequency-diverse ultrasonic target detection system by developing a zero-phase IIR (ZP-IIR) filter. Several ZP-IIR filter types including Chebyshev-I, Chebyshev- II, and Butterworth were analyzed for their detection performance. The 4th-order filters with 8-bit quantized coefficients are shown to improve the flaw-to-clutter ratio by approximately 10 dB. Furthermore, the reduced adder graph algorithm is used for a hardware realization of ZP-IIR filters that does not require any dedicated multipliers. A small number of coefficients inherent to IIR filters and their multiplierless implementation provide efficient architecture suitable for compact, real-time ultrasonic imaging devices.
机译：在这项研究中，我们通过开发零相位IIR（ZP-IIR）滤波器来满足分频超声目标检测系统不断增长的计算需求。分析了几种ZP-IIR滤波器类型，包括Chebyshev-I，Chebyshev-II和Butterworth的检测性能。图中显示了具有8位量化系数的4阶滤波器可将缺陷杂波比提高约10 dB。此外，简化的加法器图算法用于不需要任何专用乘法器的ZP-IIR滤波器的硬件实现。 IIR滤波器固有的少量系数及其无乘法器实现提供了适用于紧凑型实时超声成像设备的高效架构。

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