Results 291 to 300 of about 224,819 (313)

Directions-of-Arrival Estimation Through Bayesian Compressive Sensing Strategies

IEEE Transactions on Antennas and Propagation, 2013
The estimation of the directions of arrival (DoAs) of narrow-band signals impinging on a linear antenna array is addressed within the Bayesian compressive sensing (BCS) framework. Unlike several state-of-the-art approaches, the voltages at the output of the receiving sensors are directly used to determine the DoAs of the signals thus avoiding the ...
Carlin, Matteo, Rocca, Paolo, Oliveri, Giacomo, Viani, Federico, Massa, Andrea   +4 more
openaire   +3 more sources

Sparsity-based direction-of-arrival estimation in the presence of near-field and far-field interferences for small-scale platform sonar arrays.

Journal of the Acoustical Society of America
For the sonar arrays mounted on an unmanned underwater vehicle (UUV), the direction-of-arrival (DOA) estimation of the far-field (FF) weak sources is influenced by the near-field (NF) interferences generated from the radiated self-noise of the UUV and ...
Zhiyao Du, Yunbo Hao, Longhao Qiu, Chenmu Li, Guolong Liang   +4 more
semanticscholar   +1 more source

Direction of Arrival (DOA) Estimation

2019
The importance of DOA estimation in radar processing for automotive applications cannot be overstated. It forms the third component of the radar cube: range, velocity, and angle. In practice, DOA estimation is often complicated by the fact that there will be multiple and unknown number of source signals impinging on the receiver array at the same time,
openaire   +1 more source

A high-resolution method for direction of arrival estimation based on an improved self-attention module.

Journal of the Acoustical Society of America
The high-resolution direction of arrival (DOA) estimation is a prominent research issue in underwater acoustics. The existing high-resolution methods include subspace methods and sparse representation methods. However, the performance of subspace methods
Xiaoying Fu, Dajun Sun, Tingting Teng
semanticscholar   +1 more source

Grid-less wideband direction of arrival estimation based on variational Bayesian inference.

Journal of the Acoustical Society of America
Many recent works have addressed the problem of wideband direction of arrival (DOA) estimation using grid-less sparse techniques, and these methods have been shown to outperform the traditional wideband DOA estimation methods.
Rui Dou, Feilong Ding, Xi Chen, Jian Wang, Deyong Yu, Yuangui Tang   +5 more
semanticscholar   +1 more source

Multi-target direction-of-arrival estimation of deep models with frame-level permutation invariant training in marine acoustic environment.

Journal of the Acoustical Society of America
Direction-of-arrival (DoA) estimation is an important part in sonar signal processing, providing a reliable foundation for tasks, such as underwater object detection and tracking.
Weihang Nie, Zehui Yang, Lingxuan Ye, Ji Xu   +3 more
semanticscholar   +1 more source

Reliable underwater multi-target direction of arrival estimation with optimal transport using deep models.

Journal of the Acoustical Society of America
Multi-target direction of arrival (DoA) estimation is an important and challenging task for sonar signal processing. In this study, we propose a method called learning direction of arrival with optimal transport (LOT) to accurately estimate the DoAs of ...
Zehui Yang, Weihang Nie, Lingxuan Ye, Gaofeng Cheng, Yonghong Yan   +4 more
semanticscholar   +1 more source

Coherent DiLL for direction of arrival estimation

6th International Conference on Signal Processing, 2002., 2003
Recently, a new direction of arrival (DOA) estimation scheme, direction lock loop (DiLL) was proposed (see Hou, W. and Kwon, H.M., Proc. IEEE Vehicular Technology Conference, 2000; Min, S. et al., Proc. CDMA Int. Conf., 2001). It is configured to operate in noncoherent mode, in other words, it uses an amplitude squaring of the spatial correlator output.
null Dongyoun Seo, null Seunghyun Min, null Kwang Bok Lee, null Yong-Hwan Lee   +3 more
openaire   +1 more source

Wavelet packets-based direction-of-arrival estimation

2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004
Wavelet packets-based MUSIC (WP-MUSIC) is proposed to improve the performance of classical MUSIC in scenarios of closely spaced DOA and low signal-to-noise ratio (SNR). With WP-MUSIC the fullband signal is decomposed into several subbands by wavelet packets, and then MUSIC is applied to each subband.
null Yanbo Xue, null Jinkuan Wang, null Zhigang Liu   +2 more
openaire   +1 more source

Maximum-likelihood wideband direction-of-arrival estimation

Sixth Multidimensional Signal Processing Workshop, 2003
The specific problem that was addressed is one in which there is limited data in both the temporal and spatial dimensions, so that one cannot assume the use of ordinary Fourier transforms on the time domain outputs of each sensor. Rather, zero-mean Gaussian statistics were assumed, and the likelihood of the observed data was directly maximized with ...
D.R. Fuhrmann, M.I. Miller
openaire   +1 more source