Probabilistic reasoning in intelligent systems: networks of plausible inference
Probabilistic reasoning in intelligent systems: networks of plausible inference
Robust distributed network localization with noisy range measurements
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
SenSlide: a sensor network based landslide prediction system
Proceedings of the 3rd international conference on Embedded networked sensor systems
Senslide: a distributed landslide prediction system
ACM SIGOPS Operating Systems Review - Systems work at Microsoft Research
Fault tolerant target tracking in sensor networks
Proceedings of the tenth ACM international symposium on Mobile ad hoc networking and computing
Achieving range-free localization beyond connectivity
Proceedings of the 7th ACM Conference on Embedded Networked Sensor Systems
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Employing a novel two tiered network structure to extend the lifetime of WSNs
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Using data from an AMI-associated sensor network for mudslide areas identification
ACIIDS'10 Proceedings of the Second international conference on Intelligent information and database systems: Part I
Periphery deployment for wireless sensor systems with guaranteed coverage percentage
Journal of Systems and Software
International Journal of Sensor Networks
Identifying mudslide area and obtaining forewarned time using AMI associated sensor network
ICCSA'10 Proceedings of the 2010 international conference on Computational Science and Its Applications - Volume Part III
Wireless sensor node localization by multisequence processing
ACM Transactions on Embedded Computing Systems (TECS)
Sensor Node Localization with Uncontrolled Events
ACM Transactions on Embedded Computing Systems (TECS)
Analog Integrated Circuits and Signal Processing
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A landslide occurs when the balance between a hill's weight and the countering resistance forces is tipped in favor of gravity. While the physics governing the interplay between these competing forces is fairly well understood, prediction of landslides has been hindered thus far by the lack of field measurements over large temporal and spatial scales necessary to capture the inherent heterogeneity in a landslide.We propose a network of sensor columns deployed at hills with landslide potential with the purpose of detecting the early signals preceding a catastrophic event. Detection is performed through a three-stage algorithm: First, sensors collectively detect small movements consistent with the formation of a slip surface separating the sliding part of hill from the static one. Once the sensors agree on the presence of such a surface, they conduct a distributed votingalgorithm to separate the subset of sensors that moved from the static ones. In the second phase, moved sensors self-localize through a trilateration mechanism and their displacements are calculated. Finally, the direction of the displacements as well as the locations of the moved nodes are used to estimate the position of the slip surface. This information along with collected soil measurements e.g. soil pore pressures) are subsequently passed to a Finite Element Model that predicts whether and when a landslide will occur.Our initial results from simulated landslides indicate that we can achieve accuracy in the order of cm in the localization as well as the slip surface estimation steps of our algorithm. This accuracy persists as the density and the size of the sensor network decreases as well as when considerable noise is present in the ranging estimates. As for our next step, we plan to evaluate the performance of our system in controlled environments under a variety of hill configurations.