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Robust direct position determination methods in the presence of array model errors

Ding Wang, Jiexin Yin, Ruirui Liu, Zhidong Wu, Tao Tang
2018 EURASIP Journal on Advances in Signal Processing  
In this paper, we present robust DPD methods that can mitigate the effects of these uncertainties in the array manifold.  ...  However, similar to conventional direction-of-arrival (DOA) estimation methods, the performance of DPD estimators can be dramatically degraded by inaccuracies in the array model.  ...  The authors also thank Stuart Jenkinson, PhD, from Liwen Bianji, Edanz Group China (www.liwenbianji.cn/ ac), for editing the English text of a draft of this manuscript.  ... 
doi:10.1186/s13634-018-0555-7 fatcat:tvzs7ff3wrhk5oqyuelh3s7qky

An H/sup /spl infin// approach to mitigate the effects of array uncertainties on the MUSIC algorithm

T. Ratnarajah, A. Manikas
1998 IEEE Signal Processing Letters  
Based on this model, formulated in an H 1 framework, a new robust direction-finding approach has been proposed.  ...  This theoretical framework is supported by simulation examples that demonstrate the robustness of the new technique to the presence of array uncertainties and signal correlation.  ...  The goal of this paper is to design a robust direction finding (DF) algorithm, which performs well even in the presence of array uncertainties.  ... 
doi:10.1109/97.700923 fatcat:ialbobuwzzclbkc7ihyxokydne

Dealing with uncertainty in microphone placement in a microphone array speech recognition system

Ivan Himawan, Sridha Sridharan, Iain McCowan
2008 Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing  
Experiments in this paper compare the robustness of different techniques for both of these approaches in terms of speech recognition accuracy.  ...  There are two general approaches to handling the placement uncertainty: using the approximately known geometry in a robust beamforming technique, or using techniques that require no prior knowledge of  ...  This indicates a certain degree of robustness in the presence of array mismatch.  ... 
doi:10.1109/icassp.2008.4517922 dblp:conf/icassp/HimawanSM08 fatcat:lw3ffho75zh25gkstrqsv75ida

Robust High-Resolution Doa Estimation With Array Pre-Calibration

Christian Weiss, Abdelhak M. Zoubir
2014 Zenodo  
Publication in the conference proceedings of EUSIPCO, Lisbon, Portugal, 2014  ...  ACKNOWLEDGEMENTS This work was supported by the 'Excellence Initiative' of the German Federal and State Governments and the Graduate School of Computational Engineering at Technische Universität Darmstadt  ...  In the presence of array errors, the choice of β becomes even more delicate. Model Errors: Ideally, the sensors have a uniform spacing of d = λ/2.  ... 
doi:10.5281/zenodo.44090 fatcat:2ugouik45ram7lu74vwfq4u56a

A Robust Algorithm for Linearly Constrained Adaptive Beamforming

Q. Zou, Z.L. Yu, Z. Lin
2004 IEEE Signal Processing Letters  
General steering vector errors, such as direction-of-arrival mismatch and array positional error, are modeled by "time-delay errors" and compensated for by self-adjusted interpolation filtering.  ...  The proposed method effectively overcomes the target-signal cancelation problem without suffering from loss in the degree of freedom for interference rejection, as verified by simulations.  ...  Acceptance angle of adaptive beamformer. Fig. 3 . 3 Fig. 3. Beampattern in the presence of array positional error.  ... 
doi:10.1109/lsp.2003.819354 fatcat:lsnev7d7mbffzi3buhvabog5hq

BA-Based Low-PSLL Beampattern Synthesis in the Presence of Array Errors

Anyi Wang, Yanhong Xu, Xuhong Li
2022 IEEE Access  
Date of publication xxxx 00, 0000, date of current version xxxx 00, 0000.  ...  To reduce the influence of the uncertainty characteristic of the errors, the statistical mean method is utilized to obtain a more robust calculation of the covariance matrix in the presence of array errors  ...  of the proposed approach in the presence of array errors.  ... 
doi:10.1109/access.2022.3143577 fatcat:dgwrgo5q35dqva3nwkpcrkiyea

Model-Switched Beamformer with Large Dynamic Range

Zeng Hao, Xing Qian, Yang Qingkun, Feng Linfeng
2014 International Journal of Antennas and Propagation  
According to the estimation of the array pattern at the direction of desired signal, we can determine if the "self-nulling" happens.  ...  The proposed methodology switches the models between phased array and adaptive array. In general, the system utilizes Frost adaptive beamforming.  ...  Acknowledgments The authors would like to acknowledge the support of the Science and Technology Commission of Chongqing through the Nature Science Fund (2013jjB40005).  ... 
doi:10.1155/2014/625259 fatcat:z6golcaj6jberdknr4a53wkmly

Applications Of Superresolution Methods For Radar: Examples, Problems And Solutions

U. Nickel
2013 Zenodo  
Publication in the conference proceedings of EUSIPCO, Marrakech, Morocco, 2013  ...  Robust methods are needed. • Usage of a simplified array manifold model is often possible and beneficial. • In some applications only error reduction is desired and not full resolution.  ...  Using robust criteria to determine the number of targets as mentioned in the end of Sect. 2. These criteria ignore in some way small target/ clutter contributions. 3.  ... 
doi:10.5281/zenodo.43345 fatcat:rmsnwnwifzb67ccv4j4va4kqtu

Iterative Robust Capon Beamforming with Adaptively Updated Array Steering Vector Mismatch Levels

Tao Zhang, Liguo Sun
2014 International Scholarly Research Notices  
And the output signal-to interference and noise ratio (SINR) suffers deterioration, especially in the presence of large direction of arrival (DOA) error.  ...  To cover several kinds of mismatches together, the adaptive flat ellipsoid models are introduced in our method as tight as possible.  ...  Conflict of Interests The authors declare that there is no conflict of interests regarding the publication of this paper.  ... 
doi:10.1155/2014/260875 pmid:27355008 pmcid:PMC4897530 fatcat:o7ih5jkvn5aubeqr6osxarkotq

Using Reverberation to Improve Range and Elevation Discrimination for Small Array Sound Source Localization

F Ribeiro, Cha Zhang, D A Florêncio, D E Ba
2010 IEEE Transactions on Audio, Speech, and Language Processing  
The latter is natural and expected, given that strong reflections can have amplitudes similar to that of the direct signal, but different directions of arrival.  ...  Index Terms-Array processing, circular microphone array, distance discrimination, image method, range estimation, sound source localization (SSL).  ...  in an anechoic scenario, and shows increased accuracy and robustness in the presence of reverberation.  ... 
doi:10.1109/tasl.2010.2052250 fatcat:4l5c74so3zdsvoznh7jc6hda4m

High Performance Robust Adaptive Beamforming in the Presence of Array Imperfections

Wenxing Li, Xiaojun Mao, Zhuqun Zhai, Yingsong Li
2016 International Journal of Antennas and Propagation  
A high performance robust beamforming scheme is proposed to combat model mismatch. Our method lies in the novel construction of interference-plus-noise (IPN) covariance matrix.  ...  Finally, various simulations are performed to demonstrate that the proposed beamformer provides strong robustness against a variety of array mismatches.  ...  supported by Preresearch Fund of the 12th Five-Year Plan (no. 4010403020102 and no. 4010103020103) and the Fundamental Research Funds for the Central Universities (nos.  ... 
doi:10.1155/2016/3743509 fatcat:jyl4ytp3pzcynamvof3mzwb2ci

High-Resolution Direction Finding From Higher Order Statistics: The$2rm q$-MUSIC Algorithm

P. Chevalier, A. Ferreol, L. Albera
2006 IEEE Transactions on Signal Processing  
To increase even more the resolution, the robustness to modeling errors, and the number of sources to be processed from a given array of sensors, and thus to minimize the number of sensors in operational  ...  Despite of their great interests, these methods suffer from serious drawbacks such as a weak robustness to both modeling errors and the presence of a strong colored background noise whose spatial coherence  ...  The performance of the -MUSIC method in the presence of modeling errors are computed analytically in Section V where the resolution of -MUSIC algorithm is also discussed.  ... 
doi:10.1109/tsp.2006.877661 fatcat:g4jm4zgy3fe67l2omo2ove6ruy

A general superdirectivity model for arbitrary sensor arrays

Yong Wang, Yixin Yang, Zhengyao He, Yina Han, Yuanliang Ma
2015 EURASIP Journal on Advances in Signal Processing  
Illustrative examples for different arrays are provided to demonstrate the feasibility of this method, and a reduced rank technique is used to deal with the practical array design for robust beamforming  ...  A superdirective beampattern with a beamwidth of 48.05°in the endfire direction is typically achieved when the inter-sensor spacing is only 0.09λ (λ is the wavelength), and the directivity index is up  ...  Then, the beampattern in Eq. (3) changes tõ B θ; ϕ ð Þ ¼ w H Aa θ; ϕ ð Þ ½ : ð28Þ In the presence of sensor gain and phase errors, the directivity of the array will inevitably degrade.  ... 
doi:10.1186/s13634-015-0250-x fatcat:3uayk57heng67kdzf3b6xoho6q

Tolerance Analysis of Antenna Array Pattern and Array Synthesis in the Presence of Excitation Errors

Ying Zhang, DanNi Zhao, Qiong Wang, ZhengBin Long, Xiaofeng Shen
2017 International Journal of Antennas and Propagation  
As for the problem of array synthesis in the presence of various array errors, interval analysis-convex programming (IA-CP) is presented.  ...  Toward this purpose, corresponding interval models of the power pattern functions are established, respectively, with the consideration of the amplitude errors, phase errors, or both simultaneously, in  ...  Conflicts of Interest The authors declare that there are no conflicts of interest regarding the publication of this paper.  ... 
doi:10.1155/2017/3424536 fatcat:eqpx6t2c4fce3muer2qo4x3nyq

Acoustic Localization Using Spatial Probability in Noisy and Reverberant Environments

Sebastian Braun, Ivan Tashev
2019 2019 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA)  
We demonstrate the robustness of our method in challenging non-stationary scenarios for single-and multi-speaker localization in noisy and reverberant conditions.  ...  The SSPP can be used for a probabilistic update of the estimated directions, and can further be used to determine the dominant sound source.  ...  In contrast to many other multi-source localization methods, the proposed method does not require prior knowledge of the number of active sources, which is often challenging to determine in practice.  ... 
doi:10.1109/waspaa.2019.8937163 dblp:conf/waspaa/BraunT19 fatcat:vkd7d5xl2jhtzg5c7a7onnaoci
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