Results 191 to 200 of about 9,691 (222)
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DOA estimation with fourth order propagator
2014 International Conference on Multimedia Computing and Systems (ICMCS), 2014In this paper, we derive a new propagator operator for estimating the Angles Of Arrival (AOA) of farfield narrowband electromagnetic waves impinging on antenna array when its number of sensors is larger than the number of radiating sources. The fourth order partition, of the array steering matrix, is presented to estimate the noise subspace using non ...
Youssef Khmou, Said Safi
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Optimized DOA estimation for an array antenna
Automatic Control and Computer Sciences, 2007Abstract—In this paper, we propose a Direction-of-Arrival (DOA) estimation technique that allows application of the signal subspace method. In the case when interference signals are coherent to the desired signals, the performance of the subspace method is reduced remarkably. As a solution to this problem, the spatial smoothing method has been proposed
J. K. Oh, K. H. You, G. H. Heo
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Multidimensional multirate DOA estimation in beamspace
IEEE Transactions on Signal Processing, 1996This paper presents a beamspace version of ESPRIT for uniform rectangular arrays that supports closed-form 2-D angle estimation, automatically couples the two components of the source directions, and works with any front end beamformer. The proposed algorithm is based on the observation that beamspace noise eigenvectors can be transformed to vectors ...
Jerome A. Gansman +2 more
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DOA Estimation of Coherent NLFM Signals
2011 Seventh International Conference on Intelligent Information Hiding and Multimedia Signal Processing, 2011As the prevalence of broadband coherent sources, a novel algorithm for the direction of arrival (DOA) estimation of coherent signals based on DPT and virtual array is introduced. And one of the algorithms is to be done a comparison, analysis and improvement. It can settle the problem of not finding coherent signals in routine algorithm.
Chunxia Gao +3 more
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A novel modification of WSF for DOA estimation
2013 IEEE Wireless Communications and Networking Conference (WCNC), 2013This paper addresses the most basic and crucial problem in smart antenna, i.e., the estimation of DOA (Direction-of-Arrival) finding. The performance of smart antenna system greatly depends on the resolution of DOA. MUSIC (MUiltiple SIgnal Classification) and ESPRIT (Estimation of Signal Paramter via Rotational Invariance Technique) are the most ...
Haihua Chen 0003 +5 more
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DOA estimation for broadband chirp signals
2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004We derive two new methods, based on the ambiguity function, for estimating the direction-of-arrival (DOA) of broadband chirp signals. These new methods make use of the time-frequency structure of the chirp signal and can be applied to any aperture array and any chirp rate. As long as the signals are separable in the ambiguity function plane, the number
Ning Ma, Joo Thiam Goh
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A JPSO algorithm for SML estimation of DOA
2016 16th International Symposium on Communications and Information Technologies (ISCIT), 2016The estimation of DOA is an important problem in sensor array signal processing and its industrial applications. Among all the solving techniques for DOA, the Stochastic Maximum Likelihood (SML) algorithm is well-known for its high accuracy of DOA estimation.
Haihua Chen 0003 +5 more
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A modified cumulant matrix for DOA estimation
IEEE Transactions on Signal Processing, 1994Presents a modification of the fourth-order cumulant matrix C/sub g/ proposed by one source. The modification consists of taking certain submatrices of C/sub g/ and using them to apply the ESPRIT principle with general arrays which may not be composed of matched sensor doublets, or to perform spatial smoothing to deal with the coherent sources in the ...
Yuan-Hwang Chen, Yih-Sheng Lin
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Eigenbeam-ESPRIT for DOA-Vector Estimation
IEEE Signal Processing Letters, 2019Several techniques exist to estimate the directions of arrival (DOAs) of sound sources captured with a spherical microphone array. The eigenbeam rotational invariance technique (EB-ESPRIT) uses recurrence relations of spherical harmonics to estimate the DOAs.
Adrian Herzog, Emanuël A. P. Habets
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Grid Evolution Method for DOA Estimation
IEEE Transactions on Signal Processing, 2018Off-grid direction of arrival (OGDOA) estimation methods deal with the situations where true direction of arrivals (DOAs) are not on the discretized sampling grid. However, existing OGDOA estimation methods are faced with a tradeoff between density of initial grid and computational workload.
Qianli Wang +3 more
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