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Several monitoring oriented applications in Wireless Sensor Networks (WSNs) are characterized by the necessity of two data-reporting modes: time-driven and event-driven. The former is used mainly for constantly supervising an area and the latter for event detection and target tracking. By switching between both modes a WSN can improve its energy-efficiency and accuracy of measurement processes, compared...
A Wireless sensor network (WSN) can be deployed in advance for tracking a moving target. The sensor nodes can be arranged at some expected positions, the computing complexity for locating the target hereby will be mitigated. In this paper, we propose a cooperative framework for multiple sensor nodes to track the moving target. A lightweight distributed method to locate the target is presented in the...
In recent years, energy consumption has been a critical constraint in wireless sensor networks (WSNs) and their applications. Target tracking is one of the most important of these applications. Using prediction-based methods for target tracking in WSNs, can improve energy consumption highly in these networks. Prediction-based methods, with prediction the target trajectory and its next location, only...
Localisation is one of the most important issues in wireless sensor networks, because the location information is typically useful for coverage, deployment, routing, location service, target tracking and rescue operations in wireless sensor networks. The localisation protocols are classified into two categories: range-based protocol and range-free protocol. The range-based protocols employ distance...
Wireless sensor networks (WSN) have received a lot of attention recently due to their wide applications such as target tracking, environment monitoring, and scientific exploration in dangerous environments. Secure time synchronization is a key service for wireless sensor networks (WSN). Time synchronization protocol synchronizes local clocks of group nodes to a common clock. In group, some of the...
This paper discusses the development of a wireless sensor network based target tracking platform. The platform involves ultrasound sensors for target detection and extended Kalman filter (EKF) for tracking a single target. The embedded application is implemented by TinyOS/nesC, and Lab view is used to develop the GUI. In order to optimize the energy consumption and to prolong the lifetime of the network,...
An accurate, energy efficient strategy for target tracking in wireless sensor networks is proposed. An extended Kalman filter algorithm is used to improve tracking quality and reduce communication between sensors. At any time, only one sensor, called the leader, processes and tracks the target. A two phase technique is used to determine the leader. The first phase establishes the leader when a target...
In this paper, in order to increase wireless sensor network life time, protocol with dynamic clustering is suggested. Because this network have got limited energy, therefore the energy issue is very important. The new protocol is proposed in two phases, cluster setup and steady state. This phase consist of creating cluster, dynamic distribution of cluster head, using dynamic tree structure and turning...
Due to limited network resources for sensing, communication and computation, information quality (IQ) in a wireless sensor network (WSN) depends on the algorithms and protocols for managing such resources. In this paper, for target tracking application in WSNs consisting of active sensors (such as ultrasonic sensors) in which normally a sensor senses the environment actively by emitting energy and...
Fault-tolerance is an important function in target tracking application using wireless sensor networks. We propose in this paper, an efficient fault-tolerant approach for target tracking that prevents the loss of the target. Instead of using a single prediction mechanism, our approach uses a multi-level incremental prediction technique that adjusts the prediction precision of the target movement....
Object tracking is an important application in wireless sensor network (WSN). High-accuracy and energy-efficiency are key requirements. In this paper, we propose a novel face-based object tracking protocol (FOTP), which is used to track the object with low energy consumption and high quality. FOTP combines a hexagon algorithm with face-architecture system model, which can provide precise detection...
Target tracking is one of the non trivial applications of wireless sensor network which is set up in the areas of field surveillance, habitat monitoring, indoor buildings, and intruder tracking. Various approaches have been investigated for tracking the targets, considering diverse metrics like scalability, overheads, energy consumption and target tracking accuracy. This paper for the first time contributes...
The number of active nodes in a WSN deployment governs both the longevity of the network and the accuracy of applications using the network's data. As node hibernation techniques become more sophistocated, it is important that an accurate evaluation methodology is employed to ensure fair comparisons across different techniques. Examining both energy and accuracy ensures a claim of increased longevity...
Existing target tracking algorithms require the tracker to have access to information-rich sensors, and may have difficulty recovering when the target is out of the tracker's sensing range. In this paper, we present a target tracking algorithm that combines an extremely simple mobile robot with a networked collection of wireless sensor nodes, each of which is equipped with an unreliable, limited-range,...
Due to the advancements in low cost embedded processors and wireless transmission technologies, wireless sensor networks have been commonly used in many civil and military applications. In this study, we propose a cluster based target tracking algorithm for targets moving rapidly in wireless sensor networks. In the existing studies found in the literature, the current leader node at time t predicts...
Wireless sensor networks (WSNs) have received more and more attention on the object tracking system, but the performance of active routing is low. In this paper,we present an novel energy efficient dynamic target tracking (EE-DTT) protocol for wireless sensor network, EE-DTT has three obvious features: firstly, it improves virtual grid ideas to divide each cluster into MtimesN square area and select...
Acoustic target tracking is one of the application areas of wireless sensor networks (WSNs) in which time synchronization error influences the results of target tracking. Algebraic numerical methods are used to solve simultaneous equations of target tracking. A more efficient approach is to use algebraic geometry for solving simultaneous equations of target tracking, but the analytic study of error...
We investigate the data storage and query problem for object tracking applications in wireless sensor networks. We focus on how to query the object tracking and obtain the object position effectively. The main idea is to apply multiple access entries of a storage link which stores the detected events in local storage and maintain the relation of the sensed data. When an object moves across the sensing...
We propose a novel routing scheme for providing Quality of Service (QoS) for multi-target tracking in multi-sink wireless sensor networks (WSNs). We first introduce the concept of event ordering, by virtue of which a priority-based buffer management scheme is applied to achieve QoS. We also propose a directional QoS-aware routing protocol (DQRP) for the dissemination of the event ordering list. The...
In this paper, we propose and demonstrate a novel wireless camera network system, called CITRIC. The core component of this system is a new hardware platform that integrates a camera, a frequency-scalable (up to 624 MHz) CPU, 16MB FLASH, and 64MB RAM onto a single device. The device then connects with a standard sensor network mote to form a camera mote. The design enables in-network processing of...
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