The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Localization is a significant consideration in a Wireless Sensor Network (WSN), as it is essential to correlate sensor information with the geographic location it originates from. The DV-Hop algorithm, being a range-free, distributed algorithm, is an attractive option in this regard, due to its simplicity. In this paper, we present two algorithms to improve the localization accuracy of the DV-Hop...
In traditional DV-Hop localization algorithm, the average estimation hop distance is greater influence for the distribution of beacon nodes, which causes high positioning error. A new algorithm is proposed to improve this disadvantage. The new improved algorithm uses the hyperbolic method to locate the unknown node position. This way eliminates the cumulative error and improves the positioning accuracy...
Wireless Sensor Network as an important technology of Internet of things' development, is more and more widely used in various research fields. This paper mainly researches the part of localization application based on wireless sensor network, focuses on DV-Hop localization algorithm, and gives its algorithm simulation and analysis of the simulation results. Also this paper improves the algorithm...
This paper proposes a kind of improved DV-Hop algorithm to solve the problem of low positioning accuracy in traditional DV-Hop algorithm. This method uses wavelet neural network to estimate the per-hop distance of the anchor nodes. In order to improve the positioning performance, the distance of per-hop is applied in the wireless sensor network. Simulation results show that, the localization error...
The traditional DV-HOP algorithm for three-dimensional localization precision is not good enough to use. Its positioning deviation is too large to find out the unknown nodes, and the scope of coverage is too small to find out all the nodes. Because of these shortcomings, a novel three-dimensional localization DV-Hop algorithm (NTLDV-HOP) is proposed. The proposed algorithm revises per jump distance...
Wireless sensor network (WSN) is a typical application of Ad hoc network in autonomous system (AS). It has attracted considerable attention in the past. Recent years have witnessed a growing interest in the study of localization algorithm for WSN. Self-localization of nodes is one of the key technologies for application of WSN. The localization accuracy is a significant criterion to evaluate the practical...
This article mainly talks about the self-localization technology arithmetic of WSN. Through farther analysis and simulation, aiming at the two problems of Dv-hop, this article brings forward an improved arithmetic in which a leveled flooding method and a hop-weighted localization calculation method is adopted. In the new arithmetic not only the communication coat of the network is reduced greatly,...
Wireless Sensor Networks facilitate monitoring physical environments with improved accuracy. Localization has been a major challenge in such networks because without finding the position of the sensor that is reporting sensed data, the reported data will not be useful. In this paper, we survey some of the existing localization techniques and propose a new algorithm for large scale networks that minimizes...
Localization schemes have a significant role in wireless sensor networks. During the randomly deployment in an untouched area, the nodes has to be capable for self-management to determine their position. The node could estimate the position based on the received signal from reference nodes or receiving packet information contains the coordinate of reference nodes and hop count. Considering the efficiency...
In order to hold the hardware cost is not the premise of improving the positioning accuracy of sensor nodes, the paper proposed the node locaLization research of the underground wireless sensor networks based on DV-Hop and Ant Colony Optimization, this method of non-ranging DV-Hop algorithm calculate the distance between unknown nodes and beacon nodes, with the method of triangular positioning algorithm...
Distance estimation is a key issue in range-free localization algorithms for wireless sensor networks. Approaches that assume isotropy of networks, such as Dv-hop and Gradient, cannot obtain accurate distance estimations in anisotropic sensor networks thus are not applicable to such networks. The anisotropy of sensor networks comes from two aspects: uneven nodal distribution and irregularity of deployment...
Node localization is one of the key technologies in wireless sensor networks. Taking into account the reasons for the hardware and cost, DV-Hop algorithm is wildly used. The main DV-Hop localization error is the distance between unknown nodes and anchor nodes. In this paper, the estimation of average hop-length and RSSI value has been applied to reduce the error of measurement, which is the distance...
In this paper, we introduce an improved self-adaptive localization algorithm based on DV-HOP for the node localization in wireless sensor network. We firstly divide the sensing area into several small regions according to the density of unknown nodes. Then, the beacon nodes are distributed within the sensing area in a reasonable manner, based on DV-HOP algorithm and combined with RSSI. The measured...
DV-Hop and Centroid-based algorithms are fundamental methods in wireless sensor networks. Nevertheless, they both have disadvantages. In order to utilize these two methods efficiently, a new hybrid range-free localization algorithm which combines the two methods is proposed in this paper. The average localization error rate of this hybrid algorithm is discussed and the algorithm energy consumption...
Localization of sensor nodes is the foundation of the entire wireless sensor network. The article introduces the localization process of sensor nodes of DV-HOP algorithm. Based on this, it proposes an improved DV-HOP algorithm which based on meshless weighted least square method. Highly effective non-grid method can be An effective solution to the traditional numerical method for solving dynamic problems...
The localization principle and error source of DV-Hop algorithm which is classic self-localization algorithm in wireless network are introduced in this paper. Aiming at the disadvantage of DV-Hop algorithm on localization accuracy, an improved scheme by modifying the average hop distance is proposed. The simulation results show that the comprehensive properties of the improved algorithm (including...
DV-Hop algorithm is one of the important range-free localization algorithms. Three improved methods are put forward in this paper to settle the larger location error of the classic DV-Hop localization algorithm. First, the average hop-size of each anchor node is calculated by adopting least squares method. Second, the distance between unknown nodes and anchor nodes is refined by means of the average...
Efficient sensor node localization algorithm is a research highlight in the applications of wireless sensor networks (WSN). An event information with few node location information is meaningless in practical application. The number and density of nodes shared by unknown-distance node pair are applied to establish close degree model in the paper. The close degree model is also combined with the triangle...
Sensor localization is a necessary and key functionality for the deployment of wireless sensor network (WSN) applications. This paper investigates on the range-free localization approaches for low hardware requirement. A modified DV-Hop localization algorithm is designed to reduce the localization error. The modified DV-Hop uses a novel average hop size estimate scheme, in which the local property...
Localization is one of the supporting technologies in wireless sensor networks. To enhance positioning accuracy of wireless sensor network node, an improved positioning algorithm is put forward based on the DV-Hop algorithm, A differential error correction scheme, in which average per hop distance of the position network and modified value of distance error are introduced, is proposed in this paper...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.