Results 151 to 160 of about 3,432 (185)

Optimized DOA estimation for an array antenna

Automatic Control and Computer Sciences, 2007
Abstract—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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DOA Estimation of Coherent NLFM Signals

2011 Seventh International Conference on Intelligent Information Hiding and Multimedia Signal Processing, 2011
As 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, Tianqi Zhang, Fangqing Tan, Chao Wang   +3 more
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A novel modification of WSF for DOA estimation

2013 IEEE Wireless Communications and Networking Conference (WCNC), 2013
This 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, Yiqing Zhou 0001, Lin Tian, Jinglin Shi, Jinlong Hu, Masakiyo Suzuki   +5 more
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DOA estimation for broadband chirp signals

2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004
We 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), 2016
The 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, Shibao Li, Jianhang Liu, Chen Gong, Fen Liu, Masakiyo Suzuki   +5 more
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Multidimensional multirate DOA estimation in beamspace

IEEE Transactions on Signal Processing, 1996
This 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, Michael D. Zoltowski, James V. Krogmeier   +2 more
openaire   +1 more source

Eigenbeam-ESPRIT for DOA-Vector Estimation

IEEE Signal Processing Letters, 2019
Several 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, 2018
Off-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, Zhiqin Zhao, Zhuming Chen, Zaiping Nie   +3 more
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A modified cumulant matrix for DOA estimation

IEEE Transactions on Signal Processing, 1994
Presents 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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DoA Estimation with Compensation of Hardware Impairments

2010 IEEE 72nd Vehicular Technology Conference - Fall, 2010
We consider the estimation of the direction of arrival (DoA) in the presence of hardware impairments that include the RF carrier frequency offsets, the phase offsets generated by an uncalibrated array, and the DC offset. The impairments model has been derived from the analysis of a hardware multiple antenna test-bed that uses direct down-conversion RF ...
INSERRA D., TONELLO, Andrea
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