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Recursive filter implemented as a matched clutter filter
Recursive filter implemented as a matched clutter filter
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机译:递归滤波器实现为匹配的杂波滤波器
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摘要
In a recursive (zeros and poles) filter having input and output signals y and y.sub.o and having impulse response h.sub.r apparatus and method for obtaining the convolution y.sub.o = y * h.sub.r using either the convolution integral or using the discrete Fourier transform (DFT). When using the convolution integral the apparatus first computes the impulse response h. sub.r then obtains the response y.sub.o in a convolver while when using the DFT the apparatus first computes the transfer function H.sub.r then obtains the frequency spectrum Sy.sub.o of response y.sub.o. By implementing the recursive filter as a matched clutter filter, the error normally associated with this type filter is minimized.
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机译:在具有输入和输出信号y和yo并且具有脉冲响应hr的递归(零极点)滤波器中,用于获得卷积yo = y * hr的设备和方法使用卷积积分或使用离散傅里叶变换(DFT)。当使用卷积积分时,设备首先计算脉冲响应h。然后,sub.r在卷积器中获得响应yo,而在使用DFT时,设备首先计算传递函数hr,然后获得响应yo的频谱Sy.o。通过将递归滤波器实现为匹配的杂波滤波器,通常将与此类型的滤波器相关的误差降到最低。
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