Results 161 to 170 of about 17,864 (202)
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Direction-of-arrival methods (DOA) and time difference of arrival (TDOA) position location technique
Proceedings of the Twenty-Second National Radio Science Conference, 2005. NRSC 2005., 2005This paper provides a detailed overview of the various methods for estimation of direction-of-arrival (also called angle-of-arrival) of a radio signal using an antenna array. The array-based directional-of-arrival (DOA) estimation techniques considered here are broadly divided into two different types: conventional techniques, and subspace based ...
Mohamed Abd Elsalam Mofeed +1 more
openaire +1 more source
An Off-Grid Iterative Reweighted Approach to One-Bit Direction of Arrival Estimation
IEEE Transactions on Vehicular Technology, 2023This article addresses the problem of direction of arrival (DOA) estimation only relying on the sign bits of the array signal. A new optimization model is formulated to realize the simultaneous estimation of one-bit DOAs and source number.
Lifang Feng +4 more
semanticscholar +1 more source
Journal of the Acoustical Society of America, 2023
Target direction-of-arrival (DOA) estimation is often difficult in the presence of strong interference-especially when the target DOA is very close to the interference DOA-since the strong interference signal can mask the weak target signal and make the ...
Chenmu Li +4 more
semanticscholar +1 more source
Target direction-of-arrival (DOA) estimation is often difficult in the presence of strong interference-especially when the target DOA is very close to the interference DOA-since the strong interference signal can mask the weak target signal and make the ...
Chenmu Li +4 more
semanticscholar +1 more source
Uncertainty quantification for direction-of-arrival estimation with conformal prediction.
Journal of the Acoustical Society of America, 2023Uncertainty quantification (UQ) of deep learning (DL)-based acoustic estimation methods is useful for establishing confidence in the predictions. This is crucial to enable the real-world applicability of DL-based systems for acoustic tasks. Specifically,
Ishan D. Khurjekar, P. Gerstoft
semanticscholar +1 more source
Direction-of-arrival (DOA) estimation in the presence of array signal coupling
2011 8th International Conference on Information, Communications & Signal Processing, 2011Direction-of-arrival (DOA) estimation is an important function in array signal processing. Many DOA estimation algorithms have been proposed catering for different situations and accuracies requirements. Nevertheless, most of these algorithms were designed based on the assumption of using ideal array sensors such as antennas with no interaction between
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Passive synthetic aperture for direction-of-arrival estimation using sparse Bayesian learning.
Journal of the Acoustical Society of America, 2023Passive synthetic aperture (PSA) extension for a moving array has the ability to enhance the accuracy of direction-of-arrival (DOA) estimation by constructing a larger virtual aperture.
Chao Ming +3 more
semanticscholar +1 more source
Closed-form multiple source direction-of-arrival estimator under reverberant environments.
Journal of the Acoustical Society of America, 2023Accurate direction-of-arrival (DOA) estimation of multiple sources, simultaneously active in a reverberant environment, remains a challenge, as the multi-path acoustic reflections and overlapped periods dramatically distort the direct-path wave ...
Yonggang Hu +5 more
semanticscholar +1 more source
Direction-of-arrival estimation in half-space from single sample array snapshot.
Journal of the Acoustical Society of America, 2023Most existing direction-of-arrival (DOA) estimation algorithms are intended for single-frequency use. However, the majority of real sound fields are wideband, and the application of these techniques then becomes computationally expensive.
Takahiro Iwami +2 more
semanticscholar +1 more source
Direction of arrival (DOA) estimation with extended optimum co-prime sensor array (EOCSA)
Multidimensional Systems and Signal Processing, 2021In this study we propose a novel sparse antenna array and suitable beamforming algorithm in order to decrease the number of antennas in large-scale antenna systems (LSASs) and achieving the performance of a dense antenna array. To design a sparse array we use the familiar array geometry that is called co-prime sensor array (CSA), which has been ...
Goudarz Saadati Moghadam +1 more
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Parallel wavelet transform based wideband Direction-Of-Arrival (DOA) on multicore/GPU
IEEE International Conference on Electro-Information Technology , EIT 2013, 2013In most of the signal processing applications, main interest is to obtain an accurate estimation of the Direction-Of-Arrival (DOA) of a received signal. Computation of Direction-Of-Arrival (DOA) based on Wavelet transform and other techniques are available in the literature. This work is an improved work of our previously parallel implementation of DOA.
Mohammad Wadood Majid +2 more
openaire +1 more source