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检索条件"主题词=MUSIC algorithm"

共 374 条记录，以下是51-60 订阅

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Estimation of short range multiple coherent source location by using music algorithm

Estimation of short range multiple coherent source location ...

引用

International Symposium on Electromagnetic Compatibility

作者： Kato, T Taira, K Sawaya, K Sato, R TOMOE Corp Tokyo 1040054 Japan NICT Sendai EMC Res Ctr Sendai Miyagi 9893204 Japan Tohoku Univ Sch Engn Dept Elect Commun Sendai Miyagi 9808579 Japan

An estimation method of source location of undesired electromagnetic wave from electronic devices by using the music algorithm is proposed. The music algorithm can estimate the direction of arrival accurately, however, the estimation error is large in the case of short range multiple coherent sources. In order to overcome this problem, a method to improve the estimation accuracy is presented. Experimental results show that the proposed method can reduce the maximum estimation error from 7 cm of the conventional method to 2 cm.

关键词： music algorithm estimation of source location direction of arrival multiple coherent sources

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Fast and Accurate Ultrasonic 3D Localization Using the TSaT-music algorithm

Fast and Accurate Ultrasonic 3D Localization Using the TSaT-...

引用

International Conference on Indoor Positioning and Indoor Navigation (IPIN)

作者： Mizutani, Kyohei Ito, Toshio Sugimoto, Masanori Hashizume, Hiromichi Univ Tokyo Sch Engn Tokyo Japan Natl Inst Informat Tokyo Japan

ISBN: (纸本)9781424458646

We describe a fast and accurate indoor localization technique using the multiple signal classification (music) algorithm. This algorithm is known as a high-resolution method for estimating directions of arrival (DOAs) or propagation delays. A critical problem in using the music algorithm for localization is its computational complexity. Therefore, we devised a novel algorithm called Time Space additional Temporal music (TSaT-music), which can rapidly and simultaneously identify DOAs and delays of multicarrier ultrasonic waves from transmitters. Computer simulations have proved that the computation time of the proposed algorithm is almost constant in spite of increasing numbers of incoming waves, and is faster than that of existing methods based on the music algorithm. Experiments in real environments showed that the standard deviation of position estimations in 3D space is less than 10 mm, which is satisfactory for indoor localization.

关键词： DOA music algorithm TSaT delay estimation direction-of-arrival estimation direction-of-arrival estimation indoor localization technique indoor radio multicarrier ultrasonic waves multiple signal classification position estimation propagation delays radio transmitters signal classification signal resolution signal resolution time space additional temporal transmitters ultrasonic 3D localization ultrasonic applications

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A Research on 3D Fusion Location algorithm of Spatial-time Domain Based on music algorithm 6

A Research on 3D Fusion Location Algorithm of Spatial-time D...

引用

IEEE 6th International Conference on Electronics Information and Emergency Communication (ICEIEC)

作者： Zhao, Ping Shi, Wenzhe Northwestern Polytech Univ Sch Elect & Informat Xian 710072 Shaanxi Peoples R China

ISBN: (纸本)9781509019977

In this paper, the new 3D fusion localization algorithm model based on the multiple signal classification (music) algorithm is proposed to integrate space distance positioning with time delay positioning. Space-time cascade approach enhances the receiver to receive signal strength in the range of signal source direction and the multidimensional spectrum peak search only needed in corresponding scope. Space-time fusion approach can match the airspace-domain parameters with time-domain parameters to estimate and handle the estimation problem in which source number is greater than the number of array element. The simulation results show that the accuracy of the signal source is estimated by using the 3D fusion location algorithm model when the pitching angle is less than 70 degrees.

关键词： 3D fusion location spatial-time domain uniform cross array music algorithm

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High Resolution Wideband DOA Estimation Based on Modified music algorithm

High Resolution Wideband DOA Estimation Based on Modified MU...

引用

IEEE International Conference on Information and Automation

作者： Zhou, Lin Zhao, Yong-jun Cui, Hao Zhengzhou Informat Sci & Technol Inst Zhengzhou 450002 Peoples R China Beijing Inst Technol Beijing 100081 Peoples R China

ISBN: (纸本)9781424421831

A modified music algorithm for DOA estimation was proposed in this paper. It weighted the eigenvectors in the noise subspace which decreased the proportion of the eigenvectors of the bigger eigenvalues and increased the proportion of the eigenvectors of the smaller eigenvalues. This method adjusted the specific gravity of the eigenvectors in the spatial spectrum, and it reduced the influence of subspace expanding to music method in the nonideal instance. Then it was exerted to the wideband DOA estimating. It greatly improved the resolution of wideband DOA estimation. Simulation results verified the improvements of wideband DOA estimation by applying the modified music algorithm.

关键词： direction-of-arrival music algorithm coherent signal-subspace method

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The Performance Analysis and Error Correction of music algorithm in Beam-space

The Performance Analysis and Error Correction of MUSIC Algor...

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International Conference on Information Systems and Computer Aided Education (ICISCAE)

作者： Zhang, Yunkai Zhou, Zhiquan Harbin Inst Technol Inst Informat & Elect Engn Weihai Peoples R China

ISBN: (纸本)9781538657386

music algorithm in beam-space domain is able to restrain noises to some degree. It is superior to the music algorithm in element-space domain on account of high robustness, low threshold of signal-to-noise ratio in resolution, and etc. However, array mismatch generates performance degradation of algorithm in practical application. This paper emulates the influence that array mismatch exerts on the performance estimation of music algorithm in beam-space domain, and hereof puts forward correction algorithm of independent noises basing on analyzing the performance of music algorithm in beam-space domain systematically focusing on array mismatch. The result of experiment manifests that the correction method increases the resolution probability of source and improves the robustness of music algorithm in beam-space domain.

关键词： beam-space domain music algorithm performance analysis error correction

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Spectral correlation music algorithm for cyclostationary signals by exploitation of new array configuration

Spectral correlation MUSIC algorithm for cyclostationary sig...

引用

IEEE International Symposium on Circuits and Systems (ISCAS)

作者： Jia, WM Yao, ML Song, JS Xian Res Inst High Technol Xian Peoples R China

ISBN: (纸本)0780388348

This paper presents a new cyclic direction-of-arrival (DOA) estimation algorithm. By exploiting a new minimum-redundancy linear-array (MRLA) configuration and cyclostationarity, the proposed algorithm computes a covariance matrix of music method with the pseudo-data matrix of 2N-1 virtual sensors, which are the results of temporal and spatial processing with designed M-sensor SumMRLA. Theoretical analysis and computer simulations show that, for each cyclic frequency, the algorithm can estimate 2N-2 DOAs with M-sensor Sum-MRLA (N-M).

关键词： direction-of-arrival (DOA) estimation minimum-redundancy linear array music algorithm spectral correlation

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Weighed music algorithm based on delay correlation function 11

Weighed MUSIC algorithm based on delay correlation function

引用

IEEE 11th Conference on Industrial Electronics and Applications (ICIEA)

作者： Chu, Ping Shenzhen Univ Coll Informat Engn Shenzhen Peoples R China

ISBN: (纸本)9781467386449

Weighted music algorithm based on delay correlation is proposed because of the problem that music algorithm has low DOA estimation performance in actual system. The proposed algorithm makes full use of delay correlation information of impinging signals to improve estimation performance. We obtain a new receiving data matrix which has the same array manifold with original data by observing association between delay correlation function with array manifold. In fact, the number of sample data is limited, so its estimation performance was limited. Weighted matrix is introduced in this paper to optimize the estimation performance, and it constructed a new spectrum function which is called weighted music algorithm based on delay correlation(DC-Wmusic algorithm). The use of weighted matrix has enhanced the orthogonality of signal subspace and noise subspace. Simulation results demonstrate that the proposed algorithm offer high flexibility and robust in DOA estimation.

关键词： direction of arrival delay correlation function weighted matrix music algorithm

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A method for recognition of spectrum peaks in 2-D music algorithm

A method for recognition of spectrum peaks in 2-D MUSIC algo...

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IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications

作者： Wu, SL Luo, JQ Liu, YJ Elect Engn Inst Hefei 230037 Peoples R China

ISBN: (纸本)0780391284

As a method for direction finding with excellent performance, music algorithm has been widely used. Mush work has been done in studying on recognition the peaks of music spectrum. Characteristics of music spectrum are analyzed, and a method to get the position of peaks is given. Simulations of 2-D music algorithm prove that the method is correct and useful.

关键词： music algorithm spectrum peaks differential coefficient recognition

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A Strict Bound for Dimension of Measurement Matrix for CS Beamformer music algorithm

A Strict Bound for Dimension of Measurement Matrix for CS Be...

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IEEE Region 10 Conference (TENCON)

作者： Aich, Abhishek Palanisamy, P. Natl Inst Technol Dept Elect & Commun Engn Tiruchirappalli 620015 Tamil Nadu India

ISBN: (纸本)9781509025978

The issue of reducing computational burden and its complexity while maintaining the adequate resolution has been a major problem in the area of DOA estimation. Compressive Sensing (CS) has been used in this regard to a great effect to address this issue. In recent works, it has been shown that by exploiting the sparsity of the observations obtained from the sensors, the computations can be greatly reduced without affecting resolution of the algorithm. This is done by introducing CS beamformers (CSB) to the picture. The dimension measurement matrix suggested by traditional CS theory however is found to be sub-optimal as CS beamformer doesn't use the regular CS recovery methods while implementing it. In this paper, we introduce a new strict and improved bound to the dimensions of the measurement matrix to be used in the CS beamformer music algorithm which decrease the number of measurements still further. We provide simulations to demonstrate the results and a comparison with the original algorithm hence showing that this bound is superior for CSB-music algorithm.

关键词： Dimension of Measurement matrix Direction of arrival music algorithm Compressive sensing beamforming

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A method for interharmonic measurement based on DQ Transform and music algorithm

A method for interharmonic measurement based on DQ Transform...

引用

Asia-Pacific Power and Energy Engineering Conference (APPEEC)

作者： Hua Ou-yang Wu, Zheng-guo Naval Univ Engn Elect & Informat Engn Dept Wuhan 430033 Peoples R China

ISBN: (纸本)9781457705472

Along with the development of electric power system and the wide application of nonlinear equipments or devices, the harmonics in power networks become more complicated, and the interharmonics is more severe gradually. Dq transform and music algorithm is used to detect the frequency of interharmonics in this paper. The high amplitude fundamental waveform can be eliminated by dq transform. music algorithm is kinds of the subspace spectrum estimation methods having no requires for synchronous sampling, which is suitable for short-term stable interharmonic detection. Combination of both can effectively detect low interharmonic beside high amplitude fundamental waveform. The joint algorithm is robust when interharmonic-level noise is present. Finally, the amplitudes and phases of signal are estimated by the least squares method.

关键词： component Power system Interharmonics dq Transform music algorithm Least squares method

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