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Improved music algorithm for Multiple Noncoherent Subarrays

IEEE SIGNAL PROCESSING LETTERS 2014年第5期21卷 5-8页

作者： Wen, Fei Wan, Qun Fan, Rong Wei, Hewen Univ Elect Sci & Technol China Sch Elect Engn Chengdu 610054 Peoples R China Southwest Inst Elect & Telecommun Technol China Chengdu Peoples R China

This work addresses the direction-of-arrival (DOA) estimation issue with multiple noncoherent subarrays. We use a maximum likelihood approach to derive a weighted music (w-music) algorithm for such arrays, which obtains the overall spatial spectrum via combining the weighted music spectrum of the subarrays. Theoretical analysis and numerical examples demonstrate that the w-music algorithm has a better performance compared to a previously introduced music algorithm for noncoherent subarrays.

关键词： Direction Of Arrival (DOA) estimation music algorithm noncoherent arrays time varying arrays

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The application of music algorithm in spectrum reconstruction and interferogram processing

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OPTICS COMMUNICATIONS 2008年第9期281卷 2424-2428页

作者： Jian, Xiaohua Zhang, Chunmin Zhao, Baochang Zhu, Baohui Xi An Jiao Tong Univ Sch Sci Xian 710049 Peoples R China Acad Sinica Xian Inst Opt & Precis Mech Xian 710068 Peoples R China

Three different methods of spectrum reproduction and interferogram processing are discussed and contrasted in this paper. Especially, the nonparametric model of music (multiple signal classification) algorithm is firstly brought into the practical spectrum reconstruction processing. The experimental results prove that this method has immensely improved the resolution of reproduced spectrum, and provided a better math model for super advanced resolving power in spectrum reconstruction. The usefulness and simplicity of the technique will lead the interference imaging spectrometers to almost every field into which the spectroscopy has ventured and into some where it has not gone before. (C) 2007 Elsevier B.V. All rights reserved.

关键词： spectrum reconstruction music algorithm polarization interference imaging spectrometer

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A FBG sensor system with cascaded LPFGs and music algorithm for dynamic strain measurement

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SENSORS AND ACTUATORS A-PHYSICAL 2007年第2期135卷 415-419页

作者： Ran, Zeng-Ling Rao, Yun-Hang Univ Elect Sci & Technol China Key Lab Broadband Opt Fiber Transmiss & Commun Ne Minist Educ Chengdu 610054 Sichuan Peoples R China Chongqing Univ Minist Educ Key Lab Optoelect Technol & Syst Chongqing 400044 Peoples R China

A Mach-Zehnder (M-Z) interferometer formed by two cascaded long-period fiber gratings (LPFGs) serving as 'many' multi-channel edge filters is used to detect the wavelength shift, induced by measurand of fiber Bragg grating (FBG) sensors with high optical SNR of > 60 dB due to the use of a fiber ring laser, for the first time to our knowledge. Advantages of such a demodulation device are low-cost, compact, easy fabrication and implementation, good immunity of vibration and temperature, etc. In addition, in order to improve the resolution for dynamic strain measurement, a spectral analyzing algorithm called music modem spectrum estimation is adapted. The experimental results show that a dynamic strain resolution of 0.1 mu epsilon/Hz(1/2) at 700 Hz is obtained, which is 10 times improvement in strain resolution when compared with conventional FFT method. (c) 2006 Elsevier B.V. All rights reserved.

关键词： FBG sensors strain gauge LPFGs edge filter fiber ring laser music algorithm

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A Reduced-Dimension music algorithm for Monostatic FDA-MIMO Radar

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IEEE COMMUNICATIONS LETTERS 2021年第4期25卷 1279-1282页

作者： Feng, Maoyuan Cui, Zhongma Yang, Yunxiu Shu, Qin Sichuan Univ Coll Elect Engn Chengdu 610065 Peoples R China Beijing Inst Remote Sensing Equipment Beijing 100854 Peoples R China Southwest Inst Tech Phys Chengdu 610041 Peoples R China

This letter proposes a one-dimensional multiple signal classification (music) algorithm for the joint angle and range estimation in monostatic multi-input multi-output (MIMO) radar with frequency diverse array (FDA). The proposed algorithm can reduce the computational complexity greatly compared to the two-dimensional music (2D-music) algorithm but have the same performance as the 2D-music algorithm. Simulation results verify the performance of the proposed algorithm.

关键词： Estimation Multiple signal classification Radar Signal to noise ratio Computational complexity Receiving antennas Covariance matrices Frequency diverse array (FDA) multi-input multi-output (MIMO) target localization music algorithm

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Performance of Nonuniform Sampled Signal with music algorithm

Performance of Nonuniform Sampled Signal with MUSIC Algorith...

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7th World Congress on Intelligent Control and Automation

作者： Li, An Wang, Shu Huazhong Univ Sci & Technol Elect & Informat Engn Dept Wuhan 430074 Peoples R China

ISBN: (纸本)9781424421138

The channel outputs are sampled on nonuniform sampling sets, and an analysis of the sensitivity of music algorithm with nonuniform sampling (NUS) is investigated. it is demonstrated that it may be capable to select the nonuniform sampled received signal of interesting using music algorithm. NUS in the time domain is equivalent to construct a virtual nonuniform array through a virtual array transformation, which expands the relative phase difference of the received signal at the different sensors just as that of nonuniform linear array (NLA) arising by the antenna placement. Simulations are conducted to verify that using NUS is beneficial to reduce the system complexity as sampling wide frequency signals at low sampling rate, and greatly improve the DOA estimation performance in lower SNR than using typical uniform sampling with music algorithm.

关键词： Nonuniform Sampling (NUS) music algorithm Virtual Array Transformation

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Research of Modified music algorithm based on Vector Matrix

Research of Modified MUSIC Algorithm based on Vector Matrix

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7th International Conference on MEMS, NANO and Smart Systems (ICMENS 2011)

作者： Wang, Xiaoyao Zhang, Guojun Wang, Panpan Liu, Xibao Zhang, Wendong N Univ China Key Lab Instrumentat Sci & Dynam Measurement Minist Educ Taiyuan Peoples R China

ISBN: (纸本)9783037853122

Processing the matrix signals of vector hydrophone was critical to the research on engineering application of vector matrix. However, such processing required massive computation. Accordingly, a vector matrix based modification of music algorithm was introduced to solve such issue. The said modification lowered computation amount by applying the Wiener Filter in music algorithm to skip decomposition of eigenvalues. The method of vector hydrophone Uniform Linear Array (ULA) was adopted to test the performance of the modified algorithm. The computer simulated outcome has verified the effectiveness of such modified music algorithm, showing that the modified music algorithm can clearly distinguish the coherent signals, and is superior to the original music algorithm.

关键词： Vector hydrophone ULA music algorithm Wiener filter coherent signals

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On Doppler Ambiguity Estimation for Millimeter FM-CW Radar by Using music algorithm

On Doppler Ambiguity Estimation for Millimeter FM-CW Radar b...

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International Symposium on Antennas and Propagation (ISAP)

作者： Horiuchi, Takahiro Yamada, Hiroyoshi Yamaguchi, Yoshio Hiramoto, Michiyo Niigata Univ Grad Sch Sci & Technol Nishi Ku Ikarashi 2-8050 Niigata 9502181 Japan OKI Elect Ind Co Ltd Corp Infrastruct Grp AI Technol R&D Dept Corp Res & Dev Ctr 1-16-8 Chuou Warabi Saitama 3358510 Japan

ISBN: (纸本)9788957083048

Even though Pulse-Doppler radar estimates velocity by measuring phase shift amount between pulses, the visible Doppler range is limited by Pulse-Repetition-Interval (PRI). In radio wave, Doppler frequency occurs from moving target as well as sound wave and the phase shift information should include slightly in samples of individual pulses. In this study, music algorithm is applied to measure these minute shift. We show experimental results on Doppler shift amount estimation by using both fast-time and slow-time and show that the shift amount can be measured without depending on PRI.

关键词： Doppler estimation Millimeter wave FM-CW radar music algorithm

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The application of music algorithm in the planar array antenna 5

The application of MUSIC algorithm in the planar array anten...

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IEEE International Conference on Signal Processing, Communications and Computing ICSPCC 2015

作者： Sun Cui-zhen Northwestern Polytech Univ Sch Elect & Informat Xian Peoples R China Xian Univ Sci & Technol Sch Commun & Informat Engn Xian Peoples R China

ISBN: (纸本)9781479989201

The music algorithm is researched in the planar antenna array. The conventional direction of arrival (DOA) estimation method in the planar array antennas uses the technology of beam scanning. It needs a lot of array element. To the finite conformal array DOA estimation, the resolution ratio will be affected by the Rayleigh limit. While, the music algorithm can fully utilize the orthogonality of noise subspace and signal subspace, it can achieve the DOA estimation through the spectrum peak search. Based on the planar array antenna, the Bartlett beam-forming method the CAPON minimum variance method and the music algorithm are analyzed and simulated. The simulation results show that the music algorithm has higher resolution relative to the two traditional algorithms.

关键词： Uniform circular array antenna DOA estimation music algorithm CAPON minimum variance method Bartlett beam-forming method

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High-Resolution Short-Range Wideband FMCW Radar Measurements Based on music algorithm

High-Resolution Short-Range Wideband FMCW Radar Measurements...

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26th IEEE International Instrumentation and Measurement Technology Conference

作者： Abou-Khousa, M. A. Simms, D. L. Kharkovsky, S. Zoughi, R. Missouri Univ Sci & Technol Dept Elect & Comp Engn Appl Microwave Nondestruct Testing Lab Rolla MO 65409 USA

This paper is focused on utilizing short-range wideband FMCW radar measurements to evaluate multilayered dielectric structures. The performance of the music algorithm in resolving closely-spaced spectral lines corresp... 详细信息

ISBN: (纸本)9781424433520

关键词： FMCW radar multilayered structures music algorithm spectrum estimation

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Time-angle spectrum sensing based on sliding window music algorithm

Time-angle spectrum sensing based on sliding window MUSIC al...

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4th International Conference on Multimedia Information Networking and Security (MINES)

作者： Du Liping Liu Feifei Chen Yueyun Univ Sci & Technol Beijing Dept Commun Sch Comp & Commun Engn Beijing 100083 Peoples R China

ISBN: (纸本)9780769548524

Spectrum sensing is one of the key issues in cognitive radio. To explore all dimensions of the spectrum space, a sliding window music based spectrum sensing method is proposed to offer the spectrum holes in time-angle dimension. Simulation results show that the proposed method has better detection performance than conventional energy detection as well as high estimation accuracy.

关键词： Spectrum sensing music algorithm time-angle dimension

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