| 导向相应功率定位中时延不确定项的影响* |
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| 引用本文： | 黄毅伟,佟建飞,张文琼,胡小青,鲍明.导向相应功率定位中时延不确定项的影响*[J].应用声学,2022,41(2):225-235. |
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| 作者姓名： | 黄毅伟 佟建飞 张文琼 胡小青 鲍明 |
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| 作者单位： | )中国科学院声学研究所噪声与振动重点实验室,中国科学院声学研究所噪声与振动重点实验室,)中国科学院声学研究所噪声与振动重点实验室,中国科学院声学研究所噪声与振动重点实验室,中国科学院声学研究所噪声与振动重点实验室 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目）国家自然基金：6217011780 复杂环境自适应信息处理技术研究, |
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| 摘 要： | 在分布式传声器网络应用中，可控波束形成器导向相应功率(SRP)声源定位算法受到导向时延不准确的影响导致定位不稳定。将导向时延不确定项引入SRP定位模型，并对引起不确定项的主要干扰因素进行了分析建模，同时提出了应对导向时延不确定项的SRP定位算法。蒙特卡罗仿真和分析表明该算法具有抑制噪声和降低定位误差的效果，实际实验数据结果进一步验证了在实际环境中改进算法的有效性，定位精度和定位稳定性均有显著的提升。
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| 关 键 词： | 导向相应功率 声源定位 无线声传感器网络 |
| 收稿时间： | 2021/3/12 0:00:00 |
| 修稿时间： | 2022/2/28 0:00:00 |
Steering time delay uncertainties in the steered response power-based source localization* |
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| Huang Yiwei,Tong Jianfei,Zhang Wenqiong,Hu Xiaoqing and Bao Ming.Steering time delay uncertainties in the steered response power-based source localization*[J].Applied Acoustics,2022,41(2):225-235. |
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| Authors: | Huang Yiwei Tong Jianfei Zhang Wenqiong Hu Xiaoqing and Bao Ming |
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| Institution: | )Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences,Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences,)Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences,Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences,Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences |
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| Abstract: | The classical steered response power (SRP)-based localization method can hardly achieve robust performance in distributed wireless acoustic sensor networks under the influence of inaccurate steering time delay. In this paper, a modified SRP-based localization model is formulated containing the steering time delay uncertainty. The steering time uncertainty components are analyzed, and two improved methods are proposed. Monte Carlo simulations show that the proposed method can suppress noise and reduce localization error. Field experiment verifies its effectiveness since the stability and error performance is improved. |
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| Keywords: | steered response power sound source localization distributed sensor networks |
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