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检索条件"任意字段=2008 IEEE Sensor Array and Multichannel Signal Processing Workshop"

共 1267 条记录，以下是151-160 订阅

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Study on Coding Scheme with EPC-MIMO Radar in Clutter-Free Scenario 11

Study on Coding Scheme with EPC-MIMO Radar in Clutter-Free S...

引用

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

作者： Xu, Jingwei So, Hing Cheung Xidian Univ Xian 710071 Shaanxi Peoples R China City Univ Hong Kong Hong Kong Peoples R China

ISBN: (纸本)9781728119465

In this paper, the element-pulse coding (EPC) based multiple-input multiple-output (MIMO) radar is studied for resolving range ambiguity in clutter-free scenario. The fundamental transmit and receive procedures as well as the relationship between encoding and decoding are presented. To address the range ambiguity issue, the EPC entries in element dimension are extended to be an arbitrary permutation of the Fourier basis entries. The beampattern is designed to extract the desired target signal while suppressing targets from nuisance range regions. Both conventional and enhanced array beamforming methods are discussed. Simulation examples are provided to demonstrate the effectiveness of the proposed method.

关键词： Multiple-input multiple-output radar element-pulse coding range ambiguity Fourier basis array beamforming

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An Anti-jamming Method Against Frequency Diverse array for ISAR by Spatial Location Feature Recognition 11

An Anti-jamming Method Against Frequency Diverse Array for I...

引用

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

作者： Liu, Zhidong Li, Kaiming Luo, Ying Zhang, Qun Huang, Qingzhu Air Force Enginnering Univ Inst Informat & Nav Xian Peoples R China Unit 94608 PLA Nanjing Peoples R China

ISBN: (纸本)9781728119465

By means of frequency-shifting jamming processing of target echo signal and pulse compression in imaging processing, group of false targets will appear in different spatial locations around the true target. The feature extraction of false targets is complex and limited in existing countering methods. In this paper, an anti-jamming method against frequency diverse array (FDA) is proposed to identify the spatial location characteristics of the deception false targets. By adjusting the parameters of the radar transmitting signal, the method simultaneously transmits the anti-jamming signal and carries out the false target identification and elimination in the range dimension. Eventually, the optimal signal parameter design of anti-jamming signal is given by comparing with the range resolution. The validity of the proposed method is proved by deducing the mathematical model between the spatial distribution characteristics of the false targets and the radar transmitting signal parameters and demonstrated by simulations.

关键词： frequency diverse array inverse synthetic aperture radar anti-jamming spatial location feature Recognition

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Target Detection Based on Canonical Correlation Technique for Large array MIMO Radar in Spatially Correlated Noise 11

Target Detection Based on Canonical Correlation Technique fo...

引用

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

作者： Zhou, Meihan Jiang, Hong Dong, Siyan Jilin Univ Coll Commun Engn Changchun 130012 Peoples R China

ISBN: (纸本)9781728119465

A novel target detection algorithm for large array multi-input multi-output (MIMO) radar in spatially correlated noise is proposed in this paper using canonical correlation technique (CCT). In the signal model, two separate sub-arrays are employed as the receive array of a transmit diversity MIMO radar system. Assume that the elementary noise in each sub-array has spatial correlation, and the number of receive elements is large and grows as the same rate with the snapshots. The detection statistics is constructed based on the generalized likelihood ratio test (GLRT) criterion and the sample canonical correlation coefficient between the two sub-arrays. The expression of decision threshold is derived via the Tracy-Widom distribution of order 2 in random matrix theory. The simulation results show that the detection performance of the proposed algorithm is better than that of the conventional condition number (CN)-based algorithm in the presence of spatially correlated noise and large array.

关键词： MIMO radar target detection canonical correlation spatially correlated noise random matrix theory

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Tensor-Based Angle Estimation with Coprime MIMO Radar 11

Tensor-Based Angle Estimation with Coprime MIMO Radar

引用

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

作者： Shi, Junpeng Wu, Dongming Li, Zhihui Wen, Fangqing Natl Univ Def Technol Dept Early Warning Surveillance Hefei Peoples R China Yangtze Univ Elect & Informat Sch Jingzhou Peoples R China

ISBN: (纸本)9781728119465

In this paper, we propose an optimized tensor model for direction of departure (DOD) and direction of arrival (DOA) estimation with coprime multiple input multiple output (MIMO) radar. We first develop the Toeplitz matrix using the consecutive lags in the sum-difference coarray after vectorizing the array covariance matrix. We then construct a generalized three-way tensor model and derive the optimized tensor by maximizing the number of targets. Then, the existing COMFAC technique is exploited for angle estimation. We show that the proposed method can identify more targets and achieve better performance by enforcing the three-way structure as compared to the subspace-based algorithms. Numerical simulations are provided to validate the theoretical analysis.

关键词： MIMO radar tensor decomposition angle estimation coprime array

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Performance Evaluation of Bluetooth in a Wireless Body Area Network for Practical Applications 11

Performance Evaluation of Bluetooth in a Wireless Body Area ...

引用

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

作者： Reich, Olaf Hubner, Erik Ghita, Bogdan Wagner, Matthias Schafer, Jorg Frankfurt Univ Appl Sci Dept Comp & Engn Sci Frankfurt Germany Univ Plymouth Plymouth Devon England

ISBN: (纸本)9781728119465

This work focuses on practical research in the field of Bluetooth 5.0 and the maximum number of Bluetooth sensors nodes in a wireless body area network (WBAN) for human activity recognition (HAR). As network topology M:1 multi-pairing is used. For the best of our knowledge no direct related work in this field can be found. We investigated how many Bluetooth connections can be simultaneously connected with different smartphones (iOS) with real sensor data and in which time intervals the data can still be processed and stored. Our results show that a maximum of 14 Bluetooth devices can be connected under practical conditions. A stable transmission with 48 bytes per package are found with most reliability in an minimal interval of 40 ms per node.

关键词： Bluetooth Internet of Things (IoT) performance-evaluation wireless body area network (WBAN) Special Interest Group (SIG) NINA sensor networks

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A Variational Bayesian Approach to Direction Finding of Correlated Targets Using Coprime array 11

A Variational Bayesian Approach to Direction Finding of Corr...

引用

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

作者： Yang, Jie Yang, Yixin Northwestern Polytech Univ Sch Marine Sci & Technol Xian 710072 Shaanxi Peoples R China

ISBN: (纸本)9781728119465

In this paper, we develop a sparsity-aware algorithm for direction-of-arrival (DOA) estimation of correlated targets in the context of coprime array processing. The idea is to iteratively interpolate the observed data to a virtual nonuniform linear array (NLA) in order to raise the degrees of freedom (DOF). We derive the estimation procedures using variational inference for fully Bayesian estimation, where the current parameter estimates are used to interpolate the observed data better and thus increase the likelihood of the next parameter estimates. The novelties of our method lies in its capacity of detecting more correlated sources than the number of physical sensors. Simulated data from coprime arrays are used to illustrate the superior performance of the proposed approach as compared with other state-of-the-art compressed sensing reconstruction algorithms.

关键词： Direction-of-arrival (DOA) estimation Coprime array Degrees of freedom (DOF) Variational inference

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Sample complexity trade-offs for synthetic aperture based high-resolution estimation and detection 11

Sample complexity trade-offs for synthetic aperture based hi...

引用

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

作者： Qiao, Heng Sarangi, Pulak Alnumay, Yazeed Pal, Piya Univ Calif San Diego Dept Elect & Comp Engn San Diego CA 92103 USA

ISBN: (纸本)9781728119465

This paper critically examines the potential performance benefits offered by motion of sparse arrays for direction-of-arrival (DOA) estimation. The motivation behind utilizing array motion is to increase the number of consecutive difference lags. However, creating a synthetic array also requires more temporal measurements compared to the static (non-synthetic) array. For the first time, we rigorously analyze the trade-off between the required number of temporal samples and the length of the difference co-array to understand when synthetic arrays offer distinct advantages. As a concrete result, we show that if the ratio of the number of consecutive lags of the difference coarray of sparse arrays with and without motion is above a universal threshold, the synthetic array outperforms its non-synthetic counterpart and has a smaller estimation error. Our claims are demonstrated both theoretically and through numerical experiments(1).

关键词： Sparse array Difference Co-array array Motion Synthetic array Sample Complexity Trade-Off

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Video Analytics in Elite Soccer: A Distributed Computing Perspective

Video Analytics in Elite Soccer: A Distributed Computing Per...

引用

sensor array and multichannel signal processing workshop

作者： Debesh Jha Ashish Rauniyar Hå vard D. Johansen Dag Johansen Michael A. Riegler På l Halvorsen Ulas Bagci Northwestern University USA SINTEF Digital Norway UiT The Arctic University of Norway Norway SimulaMet Norway Oslo Metropolitan University Norway

Ubiquitous sensors and Internet of Things (IoT) technologies have revolutionized the sports industry, providing new methodologies for planning, effective coordination of training, and match analysis post game. New methods, including machine learning, image and video processing, have been developed for performance evaluation, allowing the analyst to track the performance of a player in real-time. Following FIFA's 2015 approval of electronics performance and tracking system during games, performance data of a single player or the entire team is allowed to be collected using GPS-based wearables. Data from practice sessions outside the sporting arena is being collected in greater numbers than ever before. Realizing the significance of data in professional soccer, this paper presents video analytics, examines recent state-of-the-art literature in elite soccer, and summarizes existing real-time video analytics algorithms. We also discuss real-time crowdsourcing of the obtained data, tactical and technical performance, distributed computing and its importance in video analytics and propose a future research perspective.

关键词： Training Visual analytics Wearable computers signal processing algorithms Games Streaming media Real-time systems

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Target Reflectivity Characterization for FDA Radar 11

Target Reflectivity Characterization for FDA Radar

引用

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

作者： Gui, Ronghua Wang, Wen-Qin So, Hing-Cheung Cui, Can Univ Elect Sci & Technol China Chengdu Peoples R China City Univ Hong Kong Hong Kong Peoples R China Shanghai Elect Mech Inst Shanghai Peoples R China

ISBN: (纸本)9781728119465

As an emerging array processing technique, frequency diverse array (FDA) differs from conventional phased-array in that it employs a frequency increment across the array elements. The use of frequency increment provides FDA with an array factor with joint range-angle dependency, which finds wide applications in joint range-angle target localization and range-dependent interference/clutter suppression. In the open literature, an ideal point-like target in far field is generally assumed for FDA signal modelling. However, the reflectivity characterization for more realistic targets, which are not ideally point-like and even extended in range and azimuth angle, has not been reported for FDA radar. In this paper, we establish an echo signal model of FDA radar for a general target, and then analyze the statistics of the echo signal amplitude. More specifically, we reveal the amplitude decorrelation property between different FDA elements due to the use of frequency increment, which provides useful insight into frequency increment design. The target reflectivity characteristic analysis is validated by numerical results.

关键词： Frequency diverse array (FDA) radar cross section (RCS) reflection coefficient frequency decorrelation extended target

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Integrated waveform design for an Integrated Radar and Communication System with a Uniform Linear array 11

Integrated waveform design for an Integrated Radar and Commu...

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

作者： Jiang, Mengchao Liao, Guisheng Yang, Zhiwei Liu, Yongjun Chen, Yufeng Li, Haichuan Xidian Univ Natl Lab Radar Signal Proc Xian Peoples R China

ISBN: (纸本)9781728119465

To reduce the consumption of spectrum and hardware resource, two methods are proposed to design the integrated waveform that can satisfy the requirements for both radar and communication. First, a linear superposition (LS) method is proposed to design the transmit waveforms of a uniform linear array (ULA). In the far field of the ULA, the designed transmit waveforms can simultaneously synthesize the desired radar and communication waveforms in different directions. However, the designed waveforms usually have high peak-to-average power ratio (PAPR). Then, an alternative projection (AP) method is proposed to reduce the PAPR of the transmit waveforms. The AP method can devise the waveforms with constant modulus. Both the proposed methods can perform radar and communication function in different directions. Finally, several simulation results are given to verify the effectiveness of the proposed methods.

关键词： waveform design integrated radar and communication spectral sharing waveform synthesis

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