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An analytical method for centroid computing and its application in wireless localization

Xue Jun Li
2013 2013 19th IEEE International Conference on Networks (ICON)  
Furthermore, based on the analytical solution of centroid computing, we propose a cell-based localization technique, namely Centroid Based Location (CBL) for wireless sensor networks.  ...  CBL works by finding the centroid of intersection of any two circles. In particular, we study the effect of power level mismatch among anchors.  ...  First, we managed to compute the centroid of the overlapping area of any two circles (regardless of their respective radii) and proposed a centroid based localization (CBL) algorithm similar to the one  ... 
doi:10.1109/icon.2013.6781948 dblp:conf/icon/Li13 fatcat:3e67h4wzjve5fbawjz3e2u3uoi

Localization for emergency sensor networks

H. Sanson, M. Mitsuji
2005 The 7th International Conference on Advanced Communication Technology, 2005, ICACT 2005.  
We find that common assumptions in current location schemes don't apply in a disaster scenario and the expected behavior of the localization methods changes.  ...  Unfortunately, existing systems often provide minimal communication infrastructure for suplying information about the nature or the extend of an emergency or disaster area.  ...  More advanced broadcasting mechanisms based on topology may further reduce the communication costs of the localization algorithms without affecting the location estimation or coverage of the localization  ... 
doi:10.1109/icact.2005.246123 fatcat:c5hkn4aae5drtohtoepl4phu2a

Novel range-free immune to radio range difference (IRRD) geo-localization algorithm in wireless networks

Samuel Asferaw Demilew, Dejene Ejigu, Georges Da-Costa, Jean-Marc Pierson
2015 AFRICON 2015  
The algorithm does not require the traditional assumption of anchor (location aware) nodes that have the same communication range as it works with anchor nodes having homogeneous and/or heterogeneous communication  ...  The algorithm works in two steps: in the first step, the True Intersection Points (TIPs) forming the vertices of the smallest communication overlap polygon (SCOP) of the anchor nodes are found.  ...  There are various follow-up studies on DV-Hop technique [12] but our interest is on the second type of technique. A second type of range-free localization, local methods, is the focus of this work.  ... 
doi:10.1109/afrcon.2015.7331966 dblp:conf/africon/DemilewECP15 fatcat:z63k2a5v7zfrhcpcpoqkl7s57i

Localization in Wireless Sensor Networks: A Survey on Algorithms, Measurement Techniques, Applications and Challenges

Anup Paul, Takuro Sato
2017 Journal of Sensor and Actuator Networks  
In this paper, we survey different measurement techniques and strategies for range based and range free localization with an emphasis on the latter.  ...  Further, we discuss different localization-based applications, where the estimation of the location information is crucial.  ...  Localization in WSNs has been intensively studied in recent years, with most of these studies relying on the condition that only a small proportion of sensor nodes, called anchor nodes, know their exact  ... 
doi:10.3390/jsan6040024 fatcat:blt32won6fcetoekcj4rpz4ilq

New Localization Technique for Mobile Wireless Sensor Networks Using Sectorized Antenna

Ahmed M. Khedr
2015 International Journal of Communications, Network and System Sciences  
The location can be obtained by calculating the area of intersection of the sectors and calculate the centroid of this area (node location).  ...  Hop count based techniques [27] [28] avoid the need for a large number of seeds, but instead require dense and uniform node distribution In this paper, we propose a new distributed range free technique  ...  Figure 6 shows the impact of nodes density on the estimated error in case of the proposed and Centroid techniques.  ... 
doi:10.4236/ijcns.2015.89032 fatcat:ja3akz4a6nhc3an6ujbbmjif5i

Algorithmic Aspects of Sensor Localization [chapter]

Sajal K. Das, Jing Wang, R.K. Ghosh, Rupert Reiger
2010 Monographs in Theoretical Computer Science  
Moreover, GPS-based localization is not applicable in the indoor environments such as buildings.  ...  Thus, the literature represents a very rich ensemble of algorithmic techniques applicable to low power, highly distributed nodes with resource-optimal computations.  ...  A distributed algorithm considers a part of the network when localizing one sensor node.  ... 
doi:10.1007/978-3-642-14849-1_9 dblp:series/eatcs/Das0GR11 fatcat:qdhfkp7l4bh2dbbdl6u6d4udji

Iterative Positioning Algorithm for Indoor Node Based on Distance Correction in WSNs

Jing Chen, Shixin Wang, Mingsan Ouyang, Yuting Xuan, Kuan-Ching Li
2019 Sensors  
Based on the new distance, the triangular centroid positioning algorithm is applied to calculate the coordinates of the target node, after which the iterative positioning model is constructed and the distance  ...  target node obtained using a triangle centroid localization algorithm, via which the distance deviation coefficient under the influence of noise is calculated, and (3) the ratio of the distance measured  ...  The triangle centroid localization algorithm has been iteratively conducted based on the adjusted new distance value to improve the node positioning accuracy.  ... 
doi:10.3390/s19224871 pmid:31717343 pmcid:PMC6891436 fatcat:fwqxcwzwpbas7ci2v5w2sm7i7a


Anil A. Agashe .
2014 International Journal of Research in Engineering and Technology  
The procedure through which the sensor nodes obtain their positions is called localization. Many localization algorithms have been proposed for wireless sensor networks.  ...  Sensor node localization which is determining where a given sensor node is physically or relatively located is extremely crucial for most of the applications in wireless sensor networks.  ...  To find the centre Radical Line Algorithm [5] is used SIMULATION MODEL A simulation model is developed in MATLAB to study the performance of proposed ad hoc anchor nodes based localization algorithm  ... 
doi:10.15623/ijret.2014.0301084 fatcat:mtx66sky3farbjf5gnorysnw2i

LS-SVM Based WSN Location Algorithm in NLOS Environments

Hongyan Zhang, Zheng Liu, Biwen Wang, Peng Liu, Jiyan Huang, Daoxin Li
2017 DEStech Transactions on Computer Science and Engineering  
Location methods based on learning theory perform well in wireless cellular networks.  ...  Compared with LS-SVM in wireless cellular networks only using the range measurements between anchor nodes and blind nodes, the proposed method can improve the positioning accuracy by using all the range  ...  Examples of the rangefree localization algorithms can include centroid algorithm [6] , Dv-Hop algorithm [7] , APIT algorithm [8] .  ... 
doi:10.12783/dtcse/itms2016/9480 fatcat:fjutttjgpnft5o54qoyhoexb3m

Estimation of Distributed Fermat-Point Location for Wireless Sensor Networking

Po-Hsian Huang, Jiann-Liang Chen, Yanuarius Teofilus Larosa, Tsui-Lien Chiang
2011 Sensors  
This work presents a localization scheme for use in wireless sensor networks (WSNs) that is based on a proposed connectivity-based RF localization strategy called the distributed Fermat-point location  ...  DFPLE solves problems of large errors and poor performance encountered by localization schemes that are based on a bounding box algorithm.  ...  Bulusu proposed an outdoor localization scheme -Centroid‖, an outdoor location scheme in which the nodes determine the location as the centroid of its proximate anchor nodes [15] .  ... 
doi:10.3390/s110404358 pmid:22163851 pmcid:PMC3231303 fatcat:ejpapkuqa5bv5bkqdhu77yeavq

Mobile Sensor Network Localization in Harsh Environments [chapter]

Harsha Chenji, Radu Stoleru
2010 Lecture Notes in Computer Science  
We demonstrate the performance and feasibility of our localization scheme through extensive simulations and a proofof-concept implementation on hardware, respectively.  ...  We propose FuzLoc, a fuzzy logic-based approach for mobile node localization in challenging environments and formulate the localization problem as a fuzzy multilateration problem, with a fuzzy grid-prediction  ...  The authors also wish to thank Mike George for his help.  ... 
doi:10.1007/978-3-642-13651-1_18 fatcat:txfqcnp7vvgr7gvyuznc7xqbay

Survey of Localization for Internet of Things Nodes: Approaches, Challenges and Open Issues

Sheetal Ghorpade, Marco Zennaro, Bharat Chaudhari
2021 Future Internet  
Although several localization techniques and algorithms are available, there are still many challenges for the precise and efficient localization of the nodes.  ...  The performance of localization techniques greatly depends on the scenarios and conditions from which the nodes are traversing.  ...  This paper has provided an extensive study of various localization techniques and classified them based on centralized, distributed, iterative, range-based, range-free, device-based, device-free and their  ... 
doi:10.3390/fi13080210 fatcat:bbzjjgzw55c3fjuzacja7jcj5q

Toward Accurate Mobile Sensor Network Localization in Noisy Environments

Harsha Chenji, Radu Stoleru
2013 IEEE Transactions on Mobile Computing  
The fuzzy logic-based localization scheme is implemented in a simulator and compared to state of the art solutions.  ...  The node localization problem in mobile sensor networks has received significant attention.  ...  Acknowledgements: The authors thank D. Evans and M. Rudafshani for simulator code, and S. George for help and feedback during manuscript preparation.  ... 
doi:10.1109/tmc.2012.82 fatcat:7bbye4tolzdfjohy23z3q76io4

Towards Smart Surroundings: Enabling Techniques and Technologies for Localization [chapter]

Kavitha Muthukrishnan, Maria Lijding, Paul Havinga
2005 Lecture Notes in Computer Science  
We also address the important parameters for evaluating such systems. Through this survey, we explore the current trends in commercial products and research in the area of localization.  ...  Therefore, we indicate future research directions and address localization in the framework of our Smart Surroundings project.  ...  DV based positioning algorithms are localized, distributed, hop by hop positioning algorithms [25] [26] .  ... 
doi:10.1007/11426646_32 fatcat:r7rofyrhezhx3h2ieqrprm5bgi

Hierarchical Phenotyping and Graph Modeling of Spatial Architecture in Lymphoid Neoplasms [article]

Pingjun Chen, Muhammad Aminu, Siba El Hussein, Joseph D. Khoury, Jia Wu
2021 arXiv   pre-print
This study, to the best of our knowledge, is among the first to hybridize local and global graph methods to profile orchestration and interaction of cellular components.  ...  We evaluate the proposed algorithm on H&E slides of 60 hematolymphoid neoplasms and further compared it with three cell level graph-based algorithms, including the global cell graph, cluster cell graph  ...  To the best of our knowledge, this study is among the first to hybridize local and global graph methods to study cellular patterns.  ... 
arXiv:2106.16174v2 fatcat:5dm65nonxnaojmwrzinzxdntem
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