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首页> 外文期刊>IEEE Transactions on Circuits and Systems. I, Regular Papers >Three-dimensional cone filter banks
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Three-dimensional cone filter banks

机译：三维锥形滤光片组

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摘要

Three dimensional (3-D) narrow cone-shaped filter passbands are ideally required for the selective filtering of sampled broad-band 3-D plane waves on the basis of their directions of arrival. A method is proposed for approximating narrow 3-D cone-shaped passbands using a 3-D cone-filter-bank structure in which the subbands consist of band limited 3-D narrow-band infinite impulse response (IIR) beam filters having 3-D uniform bandwidths that are approximately proportional to their distance from the origin in the 3-D frequency space. The 3-D beam filters may be realized from a cascade of 3-D IIR frequency-planar filters. It is shown that the proposed 3-D cone filter bank achieves low distortion of broad-band passband 3-D plane waves, and significant attenuation of broad stopband plane waves.
机译：理想地需要三维（3-D）窄锥形滤波器通带，以便根据采样的宽带3-D平面波的到达方向对其进行选择性滤波。提出了一种使用3-D锥滤波器组结构来逼近窄3D锥形通带的方法，其中子带由带宽受限的3D窄带无限冲激响应（IIR）光束滤波器组成，其中3- D均匀带宽，大约与其在3-D频率空间中距原点的距离成比例。 3-D光束滤波器可以由3-D IIR频率平面滤波器的级联来实现。结果表明，所提出的3-D锥形滤波器组实现了宽带通带3-D平面波的低失真，以及宽带阻带平面波的显着衰减。

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