通过无人机噪声进行精确的无人机声学定位和跟踪：转向响应功率--谐波相位变换

IF 1.2 4区工程技术 Q3 ACOUSTICS

International Journal of Aeroacoustics Pub Date : 2024-06-14 DOI:10.1177/1475472x241259082

Seçkin Uluskan

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引用次数: 0

摘要

本研究介绍了一种通过无人机产生的噪声对无人机进行精确声学定位和跟踪的新方法。无人机噪声包括谐波频率成分，与螺旋桨的转速和叶片数量有关。本研究将利用谐波周围的频率成分整合到转向响应功率-相位变换（SRP-PHAT）中。首先，定义了一种定制的离散傅里叶变换（即 DFT-谐波），它只集中于谐波附近，以捕捉可能与无人机声音有关的频率成分。然后，将 DFT-Harmonics 集成到 SRP-PHAT 中，命名为 SRP-Harmonics。通过 SRP 地图和视频解释和说明了 SRP-Harmonics 的优势。利用真实麦克风阵列数据进行的实验表明，SRP-Harmonics 能精确定位和跟踪无人机，而普通的 SRP-PHAT 则无法取得合理的成功。此外，即使数据中存在大量人工白噪声或自然风噪声，经过 Kaiser 窗口处理的 SRP-Harmonics 也能保持其性能。

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Precise acoustic drone localization and tracking via drone noise: Steered response power - phase transform around harmonics

This study introduces a new method for precise acoustic drone localization and tracking via the noise generated by the drone. Drone noises include harmonic frequency components which are related to the rotational speed of the propeller and the number of blades. This study integrates utilization of the frequency components around harmonics into Steered Response Power - Phase Transform (SRP-PHAT). First, a custom discrete Fourier transform (namely DFT-Harmonics) is defined which concentrates only on the vicinities of harmonics to capture the frequency components possibly related to the drone sound. Then, DFT-Harmonics is integrated into SRP-PHAT, which is named SRP-Harmonics. The benefits of SRP-Harmonics are explained and illustrated via SRP maps and videos. Experiments with real microphone array data show that SRP-Harmonics is precise in localizing and tracking a drone, while the ordinary SRP-PHAT can not be reasonably successful. Moreover, SRP-Harmonics after Kaiser window can maintain its performance even when significant level of artificial white noise or natural wind noise exists in the data.

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来源期刊

International Journal of Aeroacoustics ACOUSTICS-ENGINEERING, AEROSPACE

CiteScore

2.10

自引率

10.00%

发文量

审稿时长

>12 weeks

期刊介绍： International Journal of Aeroacoustics is a peer-reviewed journal publishing developments in all areas of fundamental and applied aeroacoustics. Fundamental topics include advances in understanding aeroacoustics phenomena; applied topics include all aspects of civil and military aircraft, automobile and high speed train aeroacoustics, and the impact of acoustics on structures. As well as original contributions, state of the art reviews and surveys will be published. Subtopics include, among others, jet mixing noise; screech tones; broadband shock associated noise and methods for suppression; the near-ground acoustic environment of Short Take-Off and Vertical Landing (STOVL) aircraft; weapons bay aeroacoustics, cavity acoustics, closed-loop feedback control of aeroacoustic phenomena; computational aeroacoustics including high fidelity numerical simulations, and analytical acoustics.