Design and Evaluation of an Acoustic Modem for a Small Autonomous Unmanned Vehicle
Design of underwater acoustic (UWA) modems for compact-sized, underwater platforms such as autonomous underwater vehicles (AUVs) is challenging because of the practical requirement to keep an engineering balance between the performance and the system overhead. Considering this type of mobile communi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-07-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/19/13/2923 |
| _version_ | 1811264025450774528 |
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| author | Siyuan Zheng Feng Tong Bin Li Qiuyang Tao Aijun Song Fumin Zhang |
| author_facet | Siyuan Zheng Feng Tong Bin Li Qiuyang Tao Aijun Song Fumin Zhang |
| author_sort | Siyuan Zheng |
| collection | DOAJ |
| description | Design of underwater acoustic (UWA) modems for compact-sized, underwater platforms such as autonomous underwater vehicles (AUVs) is challenging because of the practical requirement to keep an engineering balance between the performance and the system overhead. Considering this type of mobile communication scenario, Doppler spread as well as the multipath draws substantial attention in implementing the system’s design and engineering. Specifically, for a small AUV, the large computational complexity of real-time resampling for the classic Doppler correction poses significant difficulty for the limited capability of the low-cost processor. In this paper, by adopting an adjustable AD (analog-to-digital) sampling rate, a Doppler compensation approach is proposed to enable low-complexity hardware implementation. Based on this, a direct sequence spread spectrum (DSSS) acoustic modem is designed for a low-cost, small-sized AUV. Meanwhile, the performance evaluation of this acoustic modem is conducted in terms of the robustness upon varying Doppler as well as AUV integration. Finally, experimental results performed on a commercial, small-sized AUV under different speeds are reported to verify the effectiveness of the proposed acoustic modem. |
| first_indexed | 2024-04-12T19:56:46Z |
| format | Article |
| id | doaj.art-9730f1073a144421bc31cc67b844875f |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-12T19:56:46Z |
| publishDate | 2019-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-9730f1073a144421bc31cc67b844875f2022-12-22T03:18:39ZengMDPI AGSensors1424-82202019-07-011913292310.3390/s19132923s19132923Design and Evaluation of an Acoustic Modem for a Small Autonomous Unmanned VehicleSiyuan Zheng0Feng Tong1Bin Li2Qiuyang Tao3Aijun Song4Fumin Zhang5The Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of the Minister of Education, Xiamen University, Xiamen 361005, Fujian, ChinaThe Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of the Minister of Education, Xiamen University, Xiamen 361005, Fujian, ChinaThe Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of the Minister of Education, Xiamen University, Xiamen 361005, Fujian, ChinaSchool of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USADepartment of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL 35487, USASchool of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USADesign of underwater acoustic (UWA) modems for compact-sized, underwater platforms such as autonomous underwater vehicles (AUVs) is challenging because of the practical requirement to keep an engineering balance between the performance and the system overhead. Considering this type of mobile communication scenario, Doppler spread as well as the multipath draws substantial attention in implementing the system’s design and engineering. Specifically, for a small AUV, the large computational complexity of real-time resampling for the classic Doppler correction poses significant difficulty for the limited capability of the low-cost processor. In this paper, by adopting an adjustable AD (analog-to-digital) sampling rate, a Doppler compensation approach is proposed to enable low-complexity hardware implementation. Based on this, a direct sequence spread spectrum (DSSS) acoustic modem is designed for a low-cost, small-sized AUV. Meanwhile, the performance evaluation of this acoustic modem is conducted in terms of the robustness upon varying Doppler as well as AUV integration. Finally, experimental results performed on a commercial, small-sized AUV under different speeds are reported to verify the effectiveness of the proposed acoustic modem.https://www.mdpi.com/1424-8220/19/13/2923dopplerAUVacoustic modemdirect sequence spread spectrum (DSSS) |
| spellingShingle | Siyuan Zheng Feng Tong Bin Li Qiuyang Tao Aijun Song Fumin Zhang Design and Evaluation of an Acoustic Modem for a Small Autonomous Unmanned Vehicle Sensors doppler AUV acoustic modem direct sequence spread spectrum (DSSS) |
| title | Design and Evaluation of an Acoustic Modem for a Small Autonomous Unmanned Vehicle |
| title_full | Design and Evaluation of an Acoustic Modem for a Small Autonomous Unmanned Vehicle |
| title_fullStr | Design and Evaluation of an Acoustic Modem for a Small Autonomous Unmanned Vehicle |
| title_full_unstemmed | Design and Evaluation of an Acoustic Modem for a Small Autonomous Unmanned Vehicle |
| title_short | Design and Evaluation of an Acoustic Modem for a Small Autonomous Unmanned Vehicle |
| title_sort | design and evaluation of an acoustic modem for a small autonomous unmanned vehicle |
| topic | doppler AUV acoustic modem direct sequence spread spectrum (DSSS) |
| url | https://www.mdpi.com/1424-8220/19/13/2923 |
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