Results 161 to 170 of about 31,048 (205)

Radar Target DOA Estimation: Moving Window VS AML Estimator

2008 IEEE International Conference on Acoustics, Speech and Signal Processing, 2008
In this paper we compare two radar target direction-of-arrival (DOA) estimation algorithms, the classical moving window (MW) and the asymptotic maximum likelihood (AML) estimators. The first technique for azimuth DOA estimation exploits multiple detections in the same time-on-target and the second one exploits the fact that the radar antenna mechanical
GRECO, MARIA, GINI, FULVIO, FARINA A., TIMMONERI L.   +3 more
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DOA estimation with hexagonal arrays

Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98 (Cat. No.98CH36181), 2002
Hexagonal arrays are widely used in practice but have received less attention in the optimum array processing literature. In this paper, we show how unitary ESPRIT can be applied to hexagonal arrays for direction-of-arrival (DOA) estimation. The resulting estimates exhibit good threshold behavior, and are close to the Cramer-Rao bound above threshold ...
null Zhi Tian, H.L. Van Trees
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Rational Arrays for DOA Estimation

ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2022
Linear arrays used in array processing usually have sensor positions r_iλ/2 where λ is the wavelength of the impinging signals and r_i are integers. This paper considers rational arrays, where r_i are rational numbers. In particular, sparse rational arrays such as coprime rational arrays are introduced.
Kulkarni, Pranav, Vaidyanathan, P. P.
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DOA Estimation with Programmable Metasurface

2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP), 2020
A novel direction of arrival (DOA) estimation method based on a single programmable metasurface sensor and compressive sensing is proposed in this paper. In comparison with metasuface-based beam-scanning method, metasurface- based compressive sensing for DOA estimation has superior performance with smaller sampling length. A proof-of-concept experiment
Song Zha, Mingtuan Lin, Hanbing Liu, Zhaofeng Wu, Jibin Liu, Bowen Deng   +5 more
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Nonparametric if and DOA estimation

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings., 2003
A nonparametric algorithm for estimation of instantaneous frequency (IF) and direction-of-arrival (DOA) of wideband FM signals, at the uniform linear array (ULA), is considered. The IF estimation of signals received at the sensor array is performed by using positions of the Wigner distribution (WD) maxima.
I. Djurovic, L. Stankovic
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Broadband beamspace DOA estimation algorithms

Oceans 2003. Celebrating the Past ... Teaming Toward the Future (IEEE Cat. No.03CH37492), 2003
Two kinds of broadband beamspace high-resolution DOA estimation algorithms are studied in this paper. The first one is broadband beamspace coherent high-resolution processing method based on constant beamwidth beamformers. In this method, conventional narrowband beamspace high-resolution DOA estimation methods such as beamspace MUSIC can be applied to ...
Y. Yang, C. Wan, null Chao Sun
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DOA Estimation of LFM Signals

2010 International Conference on Computational Intelligence and Software Engineering, 2010
The method of demodulating was brought forward to estimate the direction-of-arrival (DOA) of linear frequency modulated (LFM) signals. First, we measure the original frequencies and LFM rates of the LFM signals, then apply the measured LFM rate to demodulate the array signals respectively, so as to make certain LFM signal a harmonic signal.
Bo Xiong, Xi Zhao, Hua-wen Liu
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Robust wideband DOA estimation

IEEE/SP 13th Workshop on Statistical Signal Processing, 2005, 2005
Within the last decade there has been a growing interest in developing techniques for the estimation of the direction of arrival (DOA) of wavefronts carrying wideband signals. The coherent signal-subspace method (CSM) is one of the most largely adopted technique and it is based upon the so-called focusing matrices.
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Low-complexity robust DOA estimation

2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2015
We propose a low complexity method for estimating direction of arrival (DOA) when the positions of the array sensors are affected by errors with known magnitude bound. This robust DOA method is based on solving an optimization problem whose solution is obtained in two stages.
Dumitrescu, Bogdan, Rusu, Cristian, Tăbuş, loan, Astola, Jaakko   +3 more
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Beamspace covariance-based DoA estimation

2008 IEEE 9th Workshop on Signal Processing Advances in Wireless Communications, 2008
This work presents a new version, with reduced computational complexity, of the covariance-based direction-of-arrival (CB-DoA) algorithm. The new algorithm incorporates the concept of beamspace projection before performing the DoA estimation. Such modification reduces the dimensions of the matrices employed by the elements pace CB-DoA, simplifying the ...
Tadeu N. Ferreira, Sergio L. Netto, Paulo S. R. Diniz   +2 more
openaire   +1 more source