A Robust Steered Response Power Localization Method for Wireless Acoustic Sensor Networks in an Outdoor Environment
The localization of outdoor acoustic sources has attracted attention in wireless sensor networks. In this paper, the steered response power (SRP) localization of band-pass signal associated with steering time delay uncertainty and coarser spatial grids is considered. We propose a modified SRP-based...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-02-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/5/1591 |
| _version_ | 1797395331590127616 |
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| author | Yiwei Huang Jianfei Tong Xiaoqing Hu Ming Bao |
| author_facet | Yiwei Huang Jianfei Tong Xiaoqing Hu Ming Bao |
| author_sort | Yiwei Huang |
| collection | DOAJ |
| description | The localization of outdoor acoustic sources has attracted attention in wireless sensor networks. In this paper, the steered response power (SRP) localization of band-pass signal associated with steering time delay uncertainty and coarser spatial grids is considered. We propose a modified SRP-based source localization method for enhancing the localization robustness in outdoor scenarios. In particular, we derive a sufficient condition dependent on the generalized cross-correlation (GCC) waveform function for robust on-grid source localization and show that the SRP function with GCCs satisfying this condition can suppress the disturbances induced by the grid distance and the uncertain steering time delays. Then a GCC refinement procedure for band-pass GCCs is designed, which uses complex wavelet functions in multiple sub-bands to filter the GCCs and averages the envelopes of the filtered GCCs as the equivalent GCC to match the sufficient condition. Simulation results and field experiments demonstrate the excellent performance of the proposed method against the existing SRP-based methods. |
| first_indexed | 2024-03-09T00:34:01Z |
| format | Article |
| id | doaj.art-e0c13e3795424befbc3f98dfc141c69c |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T00:34:01Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-e0c13e3795424befbc3f98dfc141c69c2023-12-11T18:21:13ZengMDPI AGSensors1424-82202021-02-01215159110.3390/s21051591A Robust Steered Response Power Localization Method for Wireless Acoustic Sensor Networks in an Outdoor EnvironmentYiwei Huang0Jianfei Tong1Xiaoqing Hu2Ming Bao3Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, ChinaThe localization of outdoor acoustic sources has attracted attention in wireless sensor networks. In this paper, the steered response power (SRP) localization of band-pass signal associated with steering time delay uncertainty and coarser spatial grids is considered. We propose a modified SRP-based source localization method for enhancing the localization robustness in outdoor scenarios. In particular, we derive a sufficient condition dependent on the generalized cross-correlation (GCC) waveform function for robust on-grid source localization and show that the SRP function with GCCs satisfying this condition can suppress the disturbances induced by the grid distance and the uncertain steering time delays. Then a GCC refinement procedure for band-pass GCCs is designed, which uses complex wavelet functions in multiple sub-bands to filter the GCCs and averages the envelopes of the filtered GCCs as the equivalent GCC to match the sufficient condition. Simulation results and field experiments demonstrate the excellent performance of the proposed method against the existing SRP-based methods.https://www.mdpi.com/1424-8220/21/5/1591source localizationwireless acoustic sensor networkssteered response powergeneralized cross-correlation |
| spellingShingle | Yiwei Huang Jianfei Tong Xiaoqing Hu Ming Bao A Robust Steered Response Power Localization Method for Wireless Acoustic Sensor Networks in an Outdoor Environment Sensors source localization wireless acoustic sensor networks steered response power generalized cross-correlation |
| title | A Robust Steered Response Power Localization Method for Wireless Acoustic Sensor Networks in an Outdoor Environment |
| title_full | A Robust Steered Response Power Localization Method for Wireless Acoustic Sensor Networks in an Outdoor Environment |
| title_fullStr | A Robust Steered Response Power Localization Method for Wireless Acoustic Sensor Networks in an Outdoor Environment |
| title_full_unstemmed | A Robust Steered Response Power Localization Method for Wireless Acoustic Sensor Networks in an Outdoor Environment |
| title_short | A Robust Steered Response Power Localization Method for Wireless Acoustic Sensor Networks in an Outdoor Environment |
| title_sort | robust steered response power localization method for wireless acoustic sensor networks in an outdoor environment |
| topic | source localization wireless acoustic sensor networks steered response power generalized cross-correlation |
| url | https://www.mdpi.com/1424-8220/21/5/1591 |
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