Low-power acoustic modem for dense underwater sensor networks
WUWNet '06 Proceedings of the 1st ACM international workshop on Underwater networks
BeepBeep: a high accuracy acoustic ranging system using COTS mobile devices
Proceedings of the 5th international conference on Embedded networked sensor systems
Bringing sensor networks underwater with low-power acoustic communications
Proceedings of the 6th ACM conference on Embedded network sensor systems
Sinc interpolation of discrete periodic signals
IEEE Transactions on Signal Processing
Physical layer sensing using long pseudo noise codes
Proceedings of the Seventh ACM International Conference on Underwater Networks and Systems
Trench-Zohar inversion for SAR sensor network 3-D imaging based on compressive sensing
International Journal of Sensor Networks
| Hi-index | 0.00 |
Small-scale marine environments (bays, marinas, etc.) are dynamic environments where diverse flora and fauna come into close contact with man-made processes. Yet, water temperature monitoring of coastal environments is spatially sparse due to the cost of acquiring, deploying and maintaining buoys. Here we introduce microtomography: using precise time-of-flight calculations for acoustic signals sent over short distances to measure water temperature. Traditionally, tomography is used at ocean scale, however here we apply the key concepts to a sensor network to enable real-time monitoring of water temperature while also improving the spatial resolution of the data. We present our prototype underwater acoustic sensor nodes and experimental results that indicate a temperature resolution of approximately one-tenth of a degree Celsius. We also present our microtomography simulation software that allows us to study the feasibility of building complex marina-scale tomography systems and the requirements that must be met by the underlying sensor network.