Identifications of rotating sound sources are of interest in many industrial applications. The most famous beamforming to identify rotating sound source is the time-domain ROSI beamforming proposed by Sijtsma et al. (AIAA 2001-2167, 2001). Nowadays ROSI is still the unique widely recognized beamforming for array with arbitrary microphone configuration to identify rotating sound source. De-Dopplerisation is essential for beamforming to identify a moving sound source. This paper is devoted to the identification and elimination of the Doppler effect in ROSI. A non-zero source with a fundamental frequency may induce ghost contributions in ROSI at other scan points different from this source position, at all side band frequencies to the fundamental frequency with a modulation frequency equal to the rotation frequency. A rotational symmetry array with respect to rotation axis of sound source can be used to eliminate the ghost contributions in ROSI at side bands that are not non-zero integer multiples on the order of rotational symmetry with respect to the rotation axis of sound source of the array.

中文翻译：

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时域波束形成中的多普勒效应用于旋转声源识别。

旋转声源的识别在许多工业应用中都很重要。识别旋转声源的最著名的波束成形是Sijtsma等人提出的时域ROSI波束成形。（AIAA 2001-2167，2001）。如今，ROSI仍是具有任意麦克风配置以识别旋转声源的阵列独特的波束形成技术。去多普勒化对于波束形成识别移动声源至关重要。本文致力于识别和消除ROSI中的多普勒效应。具有基频的非零源可能会在与该源位置不同的其他扫描点上，在所有边带频率上，在调制频率等于旋转频率的基频上，在ROSI中引起重影贡献。