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This paper deals with a self-deployment of the mobile sensor network in an unknown environment. A mobile sensor network is composed of a distributed collection of nodes, each of which has sensing, computation, communication and locomotion capabilities. Such a network is capable of self- reconfiguration of the network topology in order to gather distributed information on the dynamic environment. In...
A mobile sensor node plays an important role in wireless sensor network. Not only can it replace a failed sensor node dynamically and automatically, but also can search the dangerous region autonomously. To keep mobile node in continuously working condition, power supply is an important issue. For this reason, docking for the mobile node is an important issue in mobile sensor network. How to guide...
Several currently planned space missions consist of a set of satellites flying in a formation. This enables a much higher functionality of the mission compared to missions consisting of only a single satellite. The sensors present in each of the satellites in the formation enable sensing of photometric data from outer space. Using optical interferometry, the data from the individual satellite sensors...
In the event of a release of toxic contaminant, either accidental or intentional, it would be useful to have an evolvable sensor network for tracking the toxic plume. In such an event, Homeland Security or DoD personnel are responsible for modeling the transport and dispersion of the plume. To do this requires specific source and meteorological data. Such data may not be available; however, it might...
A methodology is developed to deploy a mobile sensor network for the purpose of detecting and capturing mobile targets in the plane. The sensing-pursuit problem considered in this paper is analogous to the Marco Polo game, in which the pursuer must capture multiple mobile targets that are sensed intermittently, and with very limited information. In this paper, the mobile sensor network consists of...
This work presents an efficient algorithm for an observation targeting problem that is complicated by the combinatorial number of targeting choices. The approach explicitly incorporates an ensemble forecast to ensure that the measurements are chosen based on their expected improvement in the forecast at a separate verification time and location. The primary improvements in the efficiency are obtained...
The following topics are dealt with: mobile data management; mobile P2P and sensor networks; query processing for moving objects; privacy and security; broadcast environments; query processing and data management; data management for ad hoc and sensor networks; query processing in sensor networks.
Effective cooperation of robot teams in unstructured environments requires dynamic resource assignment. If the robots are also in charge of executing multiple simultaneous missions, then risks of deadlocks due to the presence of shared resources among different missions have to be tackled. This paper presents a novel approach to combine together a one step-ahead deadlock avoidance policy with a greedy...
This paper considers the problem of deploying a mobile sensor network in an unknown environment. A mobile sensor network is composed of a distributed collection of nodes, each of which has sensing, computation, wireless communication and locomotion capabilities. In this paper, an optimal distribution algorithm based on genetic algorithm is proposed during the initial planning phase in sensor network...
In this paper, we propose a framework for fault repair in mobile sensor networks. A hierarchical structure which consists of replacement module, management policy module, knowledge module, decision making module, and evaluation module is adopted. We also propose a solution for faulty sensor replacement problem. Through the numerical results, we show that our algorithm is more efficient and achieves...
An envisioned usage of sensor networks is in surveillance systems for detecting a target or monitoring a physical phenomenon in a region. Traditionally, stationary sensor networks are deployed to carry out the sensing operations. In many applications, if the monitored region is relatively large compared to the sensing range of a node, a large number of nodes are required in the region to achieve high...
Sensor networks are expected to revolutionize information gathering, processing and dissemination in many diverse environments. In this paper, we address a fundamental problem in designing sensor networks: localization, or determining the locations of nodes. We assume that a small fraction of the sensor nodes (called seeds) know their locations. We propose an algorithm that enables other nodes to...
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