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Joint azimuth, elevation, and time of arrival estimation of diffuse sources
2008
Annales des télécommunications
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Previous works dealt with azimuth estimation of diffuse sources or azimuth and time of arrival estimation of point sources. ...
In this paper, we estimate the azimuth, the elevation, and the time of arrival of diffuse sources using the covariance matching estimator (COMET) algorithm. ...
Mobile localization by means of a single base station (BS) is obtained by estimating both the time of arrival (TOA) and the angle of arrival (AOA) of the received waves. ...
doi:10.1007/s12243-008-0040-7
fatcat:hhltmjy4drfvbbycwtwhuho3yi
Direction of Arrival Estimation Using the Parameterized Spatial Correlation Matrix
2007
IEEE Transactions on Audio, Speech, and Language Processing
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Methods based on the time-differences-of-arrival (TDOA) are commonly used to determine the azimuth angle of arrival of an acoustic source. ...
The estimation of the direction-of-arrival (DOA) of one or more acoustic sources is an area that has generated much interest in recent years, with applications like automatic video camera steering and ...
Chen and Y. Huang for providing helpful suggestions and feedback regarding the simulation portion of this paper. ...
doi:10.1109/tasl.2006.889795
fatcat:4qdmnw3ovvfkfaoym3iy26in4q
An integrated framework for multi-channel multi-source localization and voice activity detection
2011
2011 Joint Workshop on Hands-free Speech Communication and Microphone Arrays
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Two of the major challenges in microphone array based adaptive beamforming, speech enhancement and distant speech recognition, are robust and accurate source localization and voice activity detection. ...
We further investigate the behavior of the SRP function and characterize theoretically a fixed point in its search space for the diffuse noise field. ...
Time Difference Of Arrival (TDOA) Estimation: A common localization approach is based on TDOA estimation of the sources with respect to a pair of sensors. ...
doi:10.1109/hscma.2011.5942417
fatcat:74cbsxriozgr7hb7js4dxdj3gq
CRNN-based Joint Azimuth and Elevation Localization with the Ambisonics Intensity Vector
2018
2018 16th International Workshop on Acoustic Signal Enhancement (IWAENC)
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The system estimates the DoA of a point source in both azimuth and elevation. ...
We propose to use as input to the CRNN the FOA acoustic intensity vector, which is easy to compute and closely linked to the sound direction of arrival (DoA). ...
The grid should be approximately uniform on the 2D (joint azimuth and elevation) sphere, leading to the following equations for the elevations φ i ∈ [−90, 90] and the azimuths θ φ i = −90 + i I × 180 ...
doi:10.1109/iwaenc.2018.8521403
dblp:conf/iwaenc/PerotinSVG18
fatcat:vccyrgzeurflrlx3nqoxuqecya
Acoustics inside a gypsum sphere with 7 m of diameter
2019
Proceedings of the ICA congress
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Concave surfaces are known to focalize or diffuse sound depending on the curvature and the source position regarding the surface. ...
In this work, results from models and measurements of the acoustics inside a 7-m-diameter gypsum sphere are compared. ...
for Science Technology and Innovation of the Province of San Juan), the National Scientific and Technical Research Council, and the National University of San Juan. ...
doi:10.18154/rwth-conv-239994
fatcat:sz5jqr5fxrewrg6o3wf42xiv5u
Efficient merging of multiple audio streams for spatial sound reproduction in Directional Audio Coding
2009
2009 IEEE International Conference on Acoustics, Speech and Signal Processing
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The analysis step outputs a mono DirAC stream, comprising an omnidirectional microphone pressure signal and side information, i.e., direction of arrival and diffuseness of the sound field expressed in ...
time-frequency domain. ...
The talkers are characterized by azimuth and elevation angles of (−60 • , 0 • ) and (45 • , 0 • ) respectively, relative to the microphone. ...
doi:10.1109/icassp.2009.4959571
dblp:conf/icassp/GaldoKKS09
fatcat:zvwa3bqylrf7jjv6ysnrdsusv4
A Fast Algorithm for 2D DOA Estimation Using an Omnidirectional Sensor Array
2017
Sensors
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A robust 2D DOA estimation based on two 1D angles estimations using L-shaped array is proposed by Kikuchi [8], and its pair matching of azimuth and elevation is accurate in low SNR and multi-source scenarios ...
They estimated the azimuth angles by UCA-RARE which decoupled the estimation of azimuths from that of elevations. ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/s17030515
pmid:28273851
pmcid:PMC5375801
fatcat:xfvflezo6vbnxj6lose3y3tmpi
Design of an Omnidirectional Multibeam Transmitter for High-Speed Indoor Wireless Communications
2010
EURASIP Journal on Wireless Communications and Networking
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We present the performance and simulation results for both line-of-sight and diffuse link configurations. ...
We propose a design of power radiation pattern for a transmitter in achieving uniform and full coverage of power distributions for diffuse indoor optical wireless systems. ...
Acknowledgment This work was partially supported by the National Science Council (NSC) of Taiwan. ...
doi:10.1155/2010/728468
fatcat:h7ilzxdttfcfrcsuw6ujn7od7u
Directional propagation channel estimation and analysis in urban environment with panoramic photography
2012
International journal of microwave and wireless technologies
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The paper also describes an original panoramic based method for estimating the noise level in the azimuth-elevation domain. ...
The second collection illustrates typical propagation channel profiles that are classified according to the delay, azimuth and elevation spread values. ...
Simultaneous comparison of measurement results, measurement campaign notes, building or city maps, and standard photographs is time-consuming and can be a source of error. ...
doi:10.1017/s1759078711001139
fatcat:i4pld2mrmjhvlnvusznqa4ihiq
A survey on 5G massive MIMO localization
2019
Digital signal processing (Print)
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In order to perform massive MIMO localization, refined channel estimation routines and localization methods have been developed. This paper provides a brief overview of this emerging field. ...
Massive antenna arrays can be used to meet the requirements of 5G, by exploiting different spatial signatures of users. ...
In these systems, the commonly used measurements are received-signal-strength (RSS), time-of-arrival (TOA), time-difference-of-arrival (TDOA) and angle-of-arrival (AOA) of the emitted signal [1, 2] . ...
doi:10.1016/j.dsp.2019.05.005
fatcat:mcp5vuiqvvel3bf6gzuz2ashta
Geometry and optics calibration of WFCTA prototype telescopes using star light
2011
Chinese Physics C, High Energy Physics & Nuclear Physics
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Note that this fulltext copy is not of the "primary" version of this work. The version it corresponds to is:
2010 pre-print arXiv:1008.3053v1 fatcat:mln3iv5xyvcn3mamk7voom4p3q
UV bright stars are used as point-like objects to calibrate the pointing and to study the optical properties of the camera, the spot size and the fractions of unrecorded photons in the insensitive areas ...
The wide field of view Cherenkov telescope array, as a component of the LHAASO project, will be used to study energy spectrum and compositions of cosmic ray by measuring the total Cherenkov light generated ...
Fig. 3 3 shows the pointing of one telescope changing with time in two observation periods, i.e. two months. Both azimuth and elevation are very stable. ...
doi:10.1088/1674-1137/35/5/015
fatcat:lnu5r3iimfgnlhmr4szy6eukvm
3D Room Geometry Reconstruction Using Audio-Visual Sensors
2017
2017 International Conference on 3D Vision (3DV)
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Depth information of the scene is recovered by stereo matching from the captured images and estimation of major acoustic reflector locations from the sound. ...
In this paper we propose a cuboid-based air-tight indoor room geometry estimation method using combination of audio-visual sensors. ...
Acknowledgements This work was supported by the EPSRC Programme Grant S3A: Future Spatial Audio for an Immersive Listener Experience at Home (EP/L000539/1) and the BBC as part of the BBC Audio Research ...
doi:10.1109/3dv.2017.00076
dblp:conf/3dim/KimRJFH17
fatcat:e3ssonjk2rcsdcu7mpkymhkckm
Continuous tracking of volcanic tremor at Mount Etna, Italy
2007
Geophysical Journal International
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Following the onset of the eruption, secondary directions of wave-arrival encompass the eruptive fissures, located on the lower eastern flank of the southeast crater. ...
Results from slowness analyses indicate the action of at least two distinct sources. ...
For typical ray parameters around 1 s km −1 , the uncertainty of our azimuthal estimates is on the order of 5 • (Saccorotti et al. 1998) . ...
doi:10.1111/j.1365-246x.2007.03316.x
fatcat:fkzaosoywfcqbfnu3n2a6k2zbm
Joint angle and delay estimation using shift-invariance techniques
1998
IEEE Transactions on Signal Processing
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In a multipath communication scenario, it is often relevant to estimate the directions and relative delays of each multipath ray. ...
The algorithm uses a two-dimensional (2-D) ESPRIT-like shift-invariance technique to separate and estimate the phase shifts due to delay and direction of incidence with automatic pairing of the two parameter ...
In general, it can involve the joint estimation of frequencies, Doppler shifts, directions of arrival (azimuth/elevation) and time/time-difference of arrival, and as such, it is the central issue in many ...
doi:10.1109/78.655425
fatcat:ylhbibphwvf5lfm3jwggk3ptai
Investigation of Ultra-Wideband Propagation Channel based on a Cluster Scheme
2006
IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences
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clusters separately, while coupling the clusters between Tx and Rx position based on similar time of arrivals, and ray tracing by utilizing high temporal and spatial resolution, respectively. ...
The relation between direction of departure and direction of arrival will then be investigated. ...
Kriangsak Sivasondhivat and Mr. Gilbert Siy Ching from Tokyo Institute of Technology for the helpful discussions and proofreading of this paper. ...
doi:10.1093/ietfec/e89-a.11.3095
fatcat:2udqzhvyozagte3dzhrzjknr6m
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