Paper Info
Title
A Distributed Positioning Algorithm For Cooperative Active And Passive Sensors
Abstract
The problem of positioning a target node is studied for wireless sensor networks with cooperative active and passive sensors. Two-way time-of-arrival and time-difference-of-arrival measurements made by both active and passive nodes are used to estimate the position of the target node. A maximum likelihood estimator (MLE) can be employed to solve the problem. Due to the nonlinear nature of the cost function in the MLE, an iterative search might converge to local minima which often results in large estimation errors. To avoid this drawback, we instead formulate the problem of positioning as finding the intersection of a number of convex sets derived from measurements. To obtain this intersection, we apply the projection onto convex sets approach, which is robust and can be implemented in a distributed manner. Simulations are performed to compare the performance of the MLE and the proposed method.
Year
DOI
Venue
2010
10.1109/PIMRC.2010.5671918
2010 IEEE 21ST INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC)
Keywords
Field
DocType
Cooperative positioning, projection onto convex sets, wireless sensor networks
Mathematical optimization,Nonlinear system,Iterative search,Computer science,Maximum likelihood,Algorithm,Symmetric matrix,Maxima and minima,Regular polygon,Distributed algorithm,Wireless sensor network
Conference
Citations 
PageRank 
References 
9
0.58
7
Authors
4
Name
Order
Citations
PageRank
Mohammad Reza Gholami121817.14
Sinan Gezici268266.18
Mats Rydström31217.11
Erik G. Ström41188110.35