Multiple Moving Targets Detection and Parameters Estimation in Strong Reverberation Environments
This paper considers the problem of multiple moving targets detection and parameters estimation (direction of arrival and range) in strong reverberation environments. As reverberation has a strong correlation with target echo, the performance of target detection and parameters estimation is signific...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2016/5274371 |
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| _version_ | 1849307930457800704 |
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| author | Ge Yu Shengchun Piao |
| author_facet | Ge Yu Shengchun Piao |
| author_sort | Ge Yu |
| collection | DOAJ |
| description | This paper considers the problem of multiple moving targets detection and parameters estimation (direction of arrival and range) in strong reverberation environments. As reverberation has a strong correlation with target echo, the performance of target detection and parameters estimation is significantly degraded in practical underwater environments. In this paper, we utilize two uniform circular arrays to receive plane wave of the linear frequency modulation signal reflected from far-field targets. On the basis of received signal, we build a variance matrix of multiple beams by using modal decomposition, conventional beamforming, and fractional Fourier transform (FrFT). We then propose a novel detection method and an estimation method of parameters based on the constructed image. A significant feature of the proposed methods is that our design does not involve any a priori knowledge about targets number and parameters of marine environments. Finally, we demonstrate via numerical simulation examples that the detection probability and the accuracy of estimated parameters of the proposed method are higher than the existing methods in both low signal-to-reverberation ratio and signal-to-noise ratio environment. |
| format | Article |
| id | doaj-art-1dc5a68243af4555847cb473b4e39f14 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-1dc5a68243af4555847cb473b4e39f142025-08-20T03:54:37ZengWileyShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/52743715274371Multiple Moving Targets Detection and Parameters Estimation in Strong Reverberation EnvironmentsGe Yu0Shengchun Piao1Acoustic Science and Technology Laboratory and College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin, ChinaAcoustic Science and Technology Laboratory and College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin, ChinaThis paper considers the problem of multiple moving targets detection and parameters estimation (direction of arrival and range) in strong reverberation environments. As reverberation has a strong correlation with target echo, the performance of target detection and parameters estimation is significantly degraded in practical underwater environments. In this paper, we utilize two uniform circular arrays to receive plane wave of the linear frequency modulation signal reflected from far-field targets. On the basis of received signal, we build a variance matrix of multiple beams by using modal decomposition, conventional beamforming, and fractional Fourier transform (FrFT). We then propose a novel detection method and an estimation method of parameters based on the constructed image. A significant feature of the proposed methods is that our design does not involve any a priori knowledge about targets number and parameters of marine environments. Finally, we demonstrate via numerical simulation examples that the detection probability and the accuracy of estimated parameters of the proposed method are higher than the existing methods in both low signal-to-reverberation ratio and signal-to-noise ratio environment.http://dx.doi.org/10.1155/2016/5274371 |
| spellingShingle | Ge Yu Shengchun Piao Multiple Moving Targets Detection and Parameters Estimation in Strong Reverberation Environments Shock and Vibration |
| title | Multiple Moving Targets Detection and Parameters Estimation in Strong Reverberation Environments |
| title_full | Multiple Moving Targets Detection and Parameters Estimation in Strong Reverberation Environments |
| title_fullStr | Multiple Moving Targets Detection and Parameters Estimation in Strong Reverberation Environments |
| title_full_unstemmed | Multiple Moving Targets Detection and Parameters Estimation in Strong Reverberation Environments |
| title_short | Multiple Moving Targets Detection and Parameters Estimation in Strong Reverberation Environments |
| title_sort | multiple moving targets detection and parameters estimation in strong reverberation environments |
| url | http://dx.doi.org/10.1155/2016/5274371 |
| work_keys_str_mv | AT geyu multiplemovingtargetsdetectionandparametersestimationinstrongreverberationenvironments AT shengchunpiao multiplemovingtargetsdetectionandparametersestimationinstrongreverberationenvironments |