Entropy-based sensor selection heuristic for target localization
Proceedings of the 3rd international symposium on Information processing in sensor networks
IEEE Transactions on Mobile Computing
Sensor network-based countersniper system
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Time difference of arrival estimation of speech source in a noisy and reverberant environment
Signal Processing - Content-based image and video retrieval
Sextant: a unified node and event localization framework using non-convex constraints
Proceedings of the 6th ACM international symposium on Mobile ad hoc networking and computing
Countersniper system for urban warfare
ACM Transactions on Sensor Networks (TOSN)
Proceedings of the 5th international conference on Information processing in sensor networks
Adaptive beamforming and particle filtering
SPPRA'06 Proceedings of the 24th IASTED international conference on Signal processing, pattern recognition, and applications
An empirical study of collaborative acoustic source localization
Proceedings of the 6th international conference on Information processing in sensor networks
Acoustic source localization using the acoustic ENSBox
Proceedings of the 6th international conference on Information processing in sensor networks
A decoupled algorithm for geolocation of multiple emitters
Signal Processing
Microphone array speaker localizers using spatial-temporal information
EURASIP Journal on Applied Signal Processing
Tradeoff between estimation performance and sensor usage in distributed localisation problems
International Journal of Ad Hoc and Ubiquitous Computing
EURASIP Journal on Advances in Signal Processing
A fast high-resolution method for bearing estimation in shallow ocean
Multidimensional Systems and Signal Processing
An Empirical Study of Collaborative Acoustic Source Localization
Journal of Signal Processing Systems
IEEE Transactions on Signal Processing
Computer Standards & Interfaces
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Sensor placement for isotropic source localization
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Robust maximum likelihood acoustic source localization in wireless sensor networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
IEEE Transactions on Signal Processing
Passive localization of mixed near-field and far-field sources using two-stage MUSIC algorithm
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
IEEE Transactions on Wireless Communications
Novel received signal strength-based indoor location system: development and testing
EURASIP Journal on Wireless Communications and Networking - Special issue on signal processing-assisted protocols and algorithms for cooperating objects and wireless sensor networks
Proceedings of the 11th international conference on Information Processing in Sensor Networks
Analog neural network approach for source localization using time-of-arrival measurements
ICONIP'12 Proceedings of the 19th international conference on Neural Information Processing - Volume Part II
Proceedings of the 12th international conference on Information processing in sensor networks
Range Estimation in a Time Varying Multipath Channel
Wireless Personal Communications: An International Journal
Closed-form estimation of the speed of propagating waves from time measurements
Multidimensional Systems and Signal Processing
Hi-index | 35.70 |
In this paper, we derive the maximum-likelihood (ML) location estimator for wideband sources in the near field of the sensor array. The ML estimator is optimized in a single step, as opposed to other estimators that are optimized separately in relative time-delay and source location estimations. For the multisource case, we propose and demonstrate an efficient alternating projection procedure based on sequential iterative search on single-source parameters. The proposed algorithm is shown to yield superior performance over other suboptimal techniques, including the wideband MUSIC and the two-step least-squares methods, and is efficient with respect to the derived Cramer-Rao bound (CRB). From the CRB analysis, we find that better source location estimates can be obtained for high-frequency signals than low-frequency signals. In addition, large range estimation error results when the source signal is unknown, but such unknown parameter does not have much impact on angle estimation. In some applications, the locations of some sensors may be unknown and must be estimated. The proposed method is extended to estimate the range from a source to an unknown sensor location. After a number of source-location frames, the location of the uncalibrated sensor can be determined based on a least-squares unknown sensor location estimator