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检索条件"任意字段=2016 IEEE Sensor Array and Multichannel Signal Processing Workshop, SAM 2016"

共 1002 条记录，以下是51-60 订阅

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CHANCE CONSTRAINED BEAMFORMING FOR JOINT RADAR-COMMUNICATION SYSTEMS 11

CHANCE CONSTRAINED BEAMFORMING FOR JOINT RADAR-COMMUNICATION...

引用

ieee 11th sensor array and multichannel signal processing workshop (sam)

作者： Ahmed, Ammar Silage, Dennis Zhang, Yimin D. Temple Univ Dept Elect & Comp Engn Philadelphia PA 19122 USA

ISBN: (纸本)9781728119465

We present an intelligent sensor array-based joint radar-communication system which exploits chance constrained programming to develop a robust beamforming design. Probabilistic chance constraints are introduced for the communication operation where the communication objectives are achieved with a desired success rate in the presence of communication channel uncertainties. The chance constraint optimization is then relaxed to form a deterministic and convex problem by employing the statistical profile of the communication channels. Simulation results illustrate the performance of the proposed strategy.

关键词： Intelligent sensor arrays joint radar-communication system spectrum sharing robust beamforming chance constrained programming

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DOA ESTIMATION EXPLOITING INTERPOLATED MULTI-FREQUENCY SPARSE array 11

DOA ESTIMATION EXPLOITING INTERPOLATED MULTI-FREQUENCY SPARS...

引用

ieee 11th sensor array and multichannel signal processing workshop (sam)

作者： Zhang, Shuimei Ahmed, Ammar Zhang, Yimin D. Sun, Shunqiao Temple Univ Dept Elect & Comp Engn Philadelphia PA 19122 USA Univ Alabama Dept Elect & Comp Engn Tuscaloosa AL USA

ISBN: (纸本)9781728119465

We consider gridless direction-of-arrival (DOA) estimation of much more targets than the number of physical sensors through the exploitation of multi-frequency sparse array design and processing which increase the degrees of freedom as more frequency components are used. A modified sensor interpolation technique is developed to accurately estimate the signal covariance matrix using very few snapshots, thereby eliminating the requirement of a large number of snapshots as in conventional different coarray-based DOA estimation. Simulation results demonstrate high-resolution gridless DOA estimation capability of more targets than the number of physical sensors.

关键词： Sparse array multi-frequency sensing array interpolation direction-of-arrival estimation

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Transmitted Beampattern Synthesis with Waveform Diverse arrays Based on Arctangent Function 10

Transmitted Beampattern Synthesis with Waveform Diverse Arra...

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10th ieee sensor array and multichannel signal processing workshop (sam)

作者： Wang, Zhonghan Song, Yaoliang Mu, Tong Nanjing Univ Sci & Technol Sch Elect & Opt Engn Nanjing Jiangsu Peoples R China

ISBN: (纸本)9781538647523

In this paper, we apply a nonlinear frequency modulation scheme based on arctangent function to waveform diverse array system to design a transmitted beampattern to focus the signal power at a specific position. Distinct from most of the existing methodologies, the proposed method overcomes the problem that the focusing performance of the signal power will decrease when considering the propagation process of the transmitted signal. As a result, the transmitted signal power can be focused at a desired position and be lasting for a period of time. Numerical simulations validate the theoretical analysis of the proposed methodology.

关键词： transmitted beampattern waveform diverse array beampattern synthesis signal power focusing

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Unambiguous AOA Estimation Using SODA Interferometry for Electronic Surveillance

Unambiguous AOA Estimation Using SODA Interferometry for Ele...

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ieee 7th sensor array and multichannel signal processing workshop (sam)

作者： Ly, Peter Q. C. Elton, Stephen D. Gray, Douglas A. Li, Joy Def Sci & Technol Org Elect Warfare & Radar Div Edinburgh SA 5111 Australia Univ Adelaide Sch Elect & Elect Engn Adelaide SA 5006 Australia

ISBN: (纸本)9781467310710

This paper presents two fast and computationally efficient interferometric algorithms that allow high accuracy, unambiguous angle-of-arrival (AOA) estimates to be obtained using physically large wideband antennas that are suitable for electronic surveillance. The performance of the algorithms are compared against conventional interferometric techniques using simulations and are also verified experimentally.

关键词： angle of arrival interferometry second order difference array ambiguity resolution

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Interference Mitigation in GNSS Receivers by array signal processing: A Software Radio Approach

Interference Mitigation in GNSS Receivers by Array Signal Pr...

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8th ieee sensor array and multichannel signal processing workshop (sam)

作者： Arribas, Javier Closas, Pau Fernandez-Prades, Carles CTTC Castelldefels 08860 Spain

ISBN: (纸本)9781479914814

The fact that most of high-accuracy positioning and distributed timing services, including safety-critical operations, rely on Global Navigation Satellite Systems (GNSS) has raised the concern of possible denial-of-service situations. Complementary to time-and frequency-domain mitigation techniques, it is well known that antenna-array based receivers can benefit from spatial domain processing and effectively mitigate unintentional and intentional Radio Frequency Interferences (RFIs). In this work, we propose a software-based GNSS receiver architecture that implements a real-time, array-based signal acquisition algorithm based on the Generalized Likelihood Ratio Test, combined with a null-steering spatial filter for signal tracking, showing its RFI rejection capabilities.

关键词： disturbance suppression likelihood ratio test Global Navigation Satellite System Receivers Software radio Spatial filters array signal processing precise registration

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Direction Finding and array Calibration Based on Sparse Reconstruction in Partly Calibrated arrays

Direction Finding and Array Calibration Based on Sparse Reco...

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8th ieee sensor array and multichannel signal processing workshop (sam)

作者： Steffens, Christian Parvazi, Pouyan Pesavento, Marius Tech Univ Darmstadt Commun Syst Grp Darmstadt Germany

ISBN: (纸本)9781479914814

A novel convex optimization problem formulation for source localization using partly calibrated arrays composed of subarrays with unknown displacements is introduced. The proposed formulation is based on sparse reconstruction using a mixed trace- and l(1)-norm minimization and exploits joint sparsity and special structure in the signal model. The new technique is applicable to subarrays of arbitrary topologies and allows the joint estimation of the directions of arrival (DoAs) and the array calibration. As shown by simulations, our new DoA estimation technique outperforms the state of the art method RARE, especially in low number of snapshot and low signal-to-noise ratio regime.

关键词： Partly Calibrated array Direction Finding Sparse Reconstruction Trace-Norm Minimization

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Improved array self calibration with large sensor position errors for closely spaced sources

Improved array self calibration with large sensor position e...

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1st ieee sensor array and multichannel signal processing workshop (sam 2000)

作者： Flanagan, BP Bell, KL Mitre Corp Reston VA 20190 USA

ISBN: (纸本)0780363396

Self-calibration algorithms estimate both source directions-of-arrival (DOAs) and perturbed array response vector parameters, such as sensor locations. Calibration errors are usually assumed to be small and a first order approximation to the perturbed array response vector is often used to simplify the estimation procedure. ln this paper, we improve on a previously presented technique that eliminates the small error assumption. The improved technique has better performance for closely spaced sources for both small and large calibration errors.

关键词： array signal processing Calibration Covariance matrix Direction of arrival estimation Matrix decomposition Multiple signal classification Mutual coupling Phased arrays sensor arrays sensor phenomena and characterization

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Multidimensional ESPRIT: A Coupled Canonical Polyadic Decomposition Approach

Multidimensional ESPRIT: A Coupled Canonical Polyadic Decomp...

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8th ieee sensor array and multichannel signal processing workshop (sam)

作者： Sorensen, Mikael De lathauwer, Lieven Katholieke Univ Leuven EE Dept ESAT STADIUS Ctr Dynam Syst Signal Proc & Data Analyt B-3001 Leuven Heverlee Belgium iMinds Med IT Dept B-3001 Leuven Heverlee Belgium KU Leuven Kulak Grp Sci Engn & Technol B-8500 Kortrijk Belgium

ISBN: (纸本)9781479914814

The ESPRIT method is a classical method for one-dimensional harmonic retrieval. During the past two decades it has become apparent that several applications in signal processing correspond to the less studied Multidimensional Harmonic Retrieval (MHR) problem. In order to accommodate this demand, we propose an extension of ESPRIT to MHR based on the coupled canonical polyadic decomposition. This leads to a dedicated uniqueness condition and an algebraic framework for MHR.

关键词： Canonical decomposition MULTIDIMENSIONAL signal processing harmonics retrieval Esapent coupling

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Subspace Tracking with Dynamical Models on the Grassmannian 13

Subspace Tracking with Dynamical Models on the Grassmannian

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13rd ieee sensor array and multichannel signal processing workshop (sam)

作者： Saad-Falcon, Alex Ancelin, Brighton Romberg, Justin Georgia Inst Technol Dept Elect & Comp Engn Atlanta GA 30332 USA

ISBN: (纸本)9798350344820;9798350344813

Tracking signals in dynamic environments presents difficulties in both analysis and implementation. In this work, we expand on a class of subspace tracking algorithms which utilize the Grassmann manifold - the set of linear subspaces of a high-dimensional vector space. We design regularized least squares algorithms based on common manifold operations and intuitive dynamical models. We demonstrate the efficacy of the approach for a narrowband beamforming scenario, where the dynamics of multiple signals of interest are captured by motion on the Grassmannian.

关键词： signal processing subspace estimation beamforming array processing grassmann manifold

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PERFORMANCE ANALYSIS OF ROOT-MUSIC-BASED DIRECTION-OF-ARRIVAL ESTIMATION FOR ARBITRARY NON-UNIFORM arrayS

PERFORMANCE ANALYSIS OF ROOT-MUSIC-BASED DIRECTION-OF-ARRIVA...

引用

ieee sensor array and multichannel signal processing workshop

作者： Ruebsamen, Michael Gershman, Alex B. Tech Univ Darmstadt Commun Syst Grp D-64283 Darmstadt Germany

We present the asymptotic performance analysis of the interpolated root-MUSIC and manifold separation (MS) techniques for direction-of-arrival (DOA) estimation in arbitrary non-uniform sensor arrays. Our analysis take... 详细信息

ISBN: (纸本)9781424422401

关键词： Direction-of-arrival estimation non-uniform sensor arrays root-MUSIC sensor array processing

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