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2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)最新文献

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The Underwater Acoustic Image Measurement Based on Non-uniform Spatial Resampling RL Deconvolution 基于非均匀空间重采样RL反卷积的水声图像测量
2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM) Pub Date : 2020-06-01 DOI: 10.1109/SAM48682.2020.9104361
Jidan Mei, Yuqing Pei, Chao Ma, Yunfei Lv, Qiuying Peng
{"title":"The Underwater Acoustic Image Measurement Based on Non-uniform Spatial Resampling RL Deconvolution","authors":"Jidan Mei, Yuqing Pei, Chao Ma, Yunfei Lv, Qiuying Peng","doi":"10.1109/SAM48682.2020.9104361","DOIUrl":"https://doi.org/10.1109/SAM48682.2020.9104361","url":null,"abstract":"When the near-field underwater acoustic image (UAI) measurement is carried out by the line array laid on the sea floor, the resolution of the conventional beamforming (CBF) acoustic image measurement method is poor, the sidelobe level is high, while the deconvolution algorithm has the effect of high resolution and low sidelobe. However, the direct deconvolution algorithm of the point spread function (PSF) shift-variant model has a large computational burden. This paper presents a non-uniform spatial resampling Richardson-Lucy (RL) fast algorithm, which based on energy distribution of conventional acoustic image measurement result make the original uniform space scanning to non-uniform spatial resampling. It can reduce the number of scanning grid, so as to reduce the amount of computation. Simulation results show that the fast RL algorithm can achieve the performance close to the original RL algorithm by reducing the computational amount by nearly an order of magnitude.","PeriodicalId":6753,"journal":{"name":"2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)","volume":"15 15","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91446646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
MIMO Radar Waveform Joint Optimization Design in Time and Frequency Domain 时频域MIMO雷达波形联合优化设计
2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM) Pub Date : 2020-06-01 DOI: 10.1109/SAM48682.2020.9104351
C. Chu, Yi-jun Chen, Qun Zhang, Ying Luo
{"title":"MIMO Radar Waveform Joint Optimization Design in Time and Frequency Domain","authors":"C. Chu, Yi-jun Chen, Qun Zhang, Ying Luo","doi":"10.1109/SAM48682.2020.9104351","DOIUrl":"https://doi.org/10.1109/SAM48682.2020.9104351","url":null,"abstract":"The performance of MIMO radar is directly affected by its transmitting waveforms. The waveform design is one of the critical issues in the design of MIMO radar system. In this paper, a new MIMO radar waveform design method based on time domain and frequency domain joint optimization is proposed. Firstly, a continuous phase coded signal waveform set is chosen to be the optimization objective variable. The design objectives is that all waveforms in the set are orthogonal in time domain, and the power spectral density (PSD) of every waveform approximates to the desired distribution in the frequency domain. According to the requirements, the problems in time domain and frequency domain are analyzed, respectively. Meanwhile, two objective functions based on minimizing the weighted correlation sidelobe level (MWISL) and minimizing the stopband power spectral density (MSPSD) are established. Then, an optimal scale factor is introduced to integrate the time domain and frequency domain into a combined model and a close form solution of code element is deduced through proper simplification and equalization of the time-frequency (T-F) joint optimization model. A recursive algorithm is obtained by summarizing the derivation process. At last, numerical examples prove the effectiveness of the proposed method in matching desired spectrum distribution and decreasing correlation sidelobe.","PeriodicalId":6753,"journal":{"name":"2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79526067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Underdetermined DOA Estimation of Quasi-Stationary Signals in the Presence of Malfunctioning Sensors 传感器故障时准平稳信号的欠定DOA估计
2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM) Pub Date : 2020-06-01 DOI: 10.1109/SAM48682.2020.9104339
Weize Sun, Chuanshan Xu, Yingying Huang, Lei Huang
{"title":"Underdetermined DOA Estimation of Quasi-Stationary Signals in the Presence of Malfunctioning Sensors","authors":"Weize Sun, Chuanshan Xu, Yingying Huang, Lei Huang","doi":"10.1109/SAM48682.2020.9104339","DOIUrl":"https://doi.org/10.1109/SAM48682.2020.9104339","url":null,"abstract":"This paper address the problem of direction-of-arrival (DOA) estimation of quasi-stationary signals based on uniform linear array with malfunctioning sensors. By utilizing the subspace structures of the local second-order statistics of quasi-stationary signals, a Khatri-Rao subspace approach is developed. Our scheme first collects the local covariance matrices of the source signals and then transfers them into a new virtual linear array which can identify at least twice as much DOAs as to the original physical one. It is also shown that the coprime configuration is a special case of the proposed model therefore the same techniques can be applied directly. Simulations are also carried out for the comparison of the proposed algorithm and state-of-the-art approaches.","PeriodicalId":6753,"journal":{"name":"2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)","volume":"7 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78365934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Greedy coordinate descent method on non-negative quadratic programming 非负二次规划的贪心坐标下降法
2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM) Pub Date : 2020-06-01 DOI: 10.1109/SAM48682.2020.9104264
Chenyu Wu, Yangyang Xu
{"title":"Greedy coordinate descent method on non-negative quadratic programming","authors":"Chenyu Wu, Yangyang Xu","doi":"10.1109/SAM48682.2020.9104264","DOIUrl":"https://doi.org/10.1109/SAM48682.2020.9104264","url":null,"abstract":"The coordinate descent (CD) method has recently become popular for solving very large-scale problems, partly due to its simple update, low memory requirement, and fast convergence. In this paper, we explore the greedy CD on solving non-negative quadratic programming (NQP). The greedy CD generally has much more expensive per-update complexity than its cyclic and randomized counterparts. However, on the NQP, these three CDs have almost the same per-update cost, while the greedy CD can have significantly faster overall convergence speed. We also apply the proposed greedy CD as a subroutine to solve linearly constrained NQP and the non-negative matrix factorization. Promising numerical results on both problems are observed on instances with synthetic data and also image data.","PeriodicalId":6753,"journal":{"name":"2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76973856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Performance Improvement in a Coexistent Radar and Communications System* 雷达与通信共存系统的性能改进*
2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM) Pub Date : 2020-06-01 DOI: 10.1109/SAM48682.2020.9104303
Yongjun Liu, G. Liao, Shengqi Zhu, Zhiwei Yang, Yufeng Chen, Xiaowen Zhang
{"title":"Performance Improvement in a Coexistent Radar and Communications System*","authors":"Yongjun Liu, G. Liao, Shengqi Zhu, Zhiwei Yang, Yufeng Chen, Xiaowen Zhang","doi":"10.1109/SAM48682.2020.9104303","DOIUrl":"https://doi.org/10.1109/SAM48682.2020.9104303","url":null,"abstract":"For the coexistent radar and communications system, the radar can receive the communications-path signal, i.e., the target return due to the transmission from the communications. The communications-path signal can be exploited to improve the radar detection performance when it has high signal to noise ratio (SNR). To show this, the statistical signal model at the radar receiver is developed, and then the generalized likelihood ratio test (GLRT) for the coexistent radar and communications system is derived in this paper. The derived GLRT has constant false alarm rate (CFAR). Finally, several numerical examples are presented to verify the performance gain by exploiting the communications-path signal with high SNR.","PeriodicalId":6753,"journal":{"name":"2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)","volume":"638 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82984236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Aircraft Target Classification Based on CNN 基于CNN的飞机目标分类
2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM) Pub Date : 2020-06-01 DOI: 10.1109/SAM48682.2020.9104254
Qingyuan Zhao, Xin Du, Yao-bing Lu
{"title":"Aircraft Target Classification Based on CNN","authors":"Qingyuan Zhao, Xin Du, Yao-bing Lu","doi":"10.1109/SAM48682.2020.9104254","DOIUrl":"https://doi.org/10.1109/SAM48682.2020.9104254","url":null,"abstract":"In this paper, we applied the idea of deep learning to aircraft targets recognition based on time-frequency diagram. Firstly we introduced application of Convolutional Neural Network (CNN), and the methods of radar target recognition. Secondly, Short Time Fourier Transformation (STFT) was introduced. Thirdly, the structure of improved LeNet CNN was described, considering the character of radar echo wave. Fourthly, 4 kinds of aircraft targets were introduced. Then, the algorithm based on CNN and STFT was validated based on measured data, and was compared with Support Vector Machine (SVM). The accuracy rate could reaches up to 99.98%, 25% higher than SVM. Finally, we summarized advantages of the method proposed in this paper and give the suggestion in engineering application.","PeriodicalId":6753,"journal":{"name":"2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)","volume":"44 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91393335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Blind Direction of Arrival and Mutual Coupling Estimation Scheme for Nested Array 一种嵌套阵列的盲到达方向和互耦估计方法
2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM) Pub Date : 2020-06-01 DOI: 10.1109/SAM48682.2020.9104291
Jinqing Shen, Jianfeng Li, Beizuo Zhu, Changbo Ye
{"title":"A Blind Direction of Arrival and Mutual Coupling Estimation Scheme for Nested Array","authors":"Jinqing Shen, Jianfeng Li, Beizuo Zhu, Changbo Ye","doi":"10.1109/SAM48682.2020.9104291","DOIUrl":"https://doi.org/10.1109/SAM48682.2020.9104291","url":null,"abstract":"Generally, nested array (NA) is susceptible to mutual coupling due to the dense subarray, which seriously degrades the performance. To address this issue, we design an array switching-based scheme to achieve the blind direction of arrival (DOA) and mutual coupling estimation in this paper. Specifically, by exploiting the inherent sparse structural characteristics of NA, we first switch the sparse subarray on to perform initial DOA estimation, which enables to offer the well-performed estimates free from the severe mutual coupling effect. Subsequently, the unambiguous angles are determined with low complexity by utilizing the received signal of the whole NA. Furthermore, the contaminated steering vector is reconstructed and a quadratic optimization problem is established to estimate the mutual coupling coefficients. Finally, re-estimation is conducted to obtain the refined estimates. Numerical simulations demonstrate the superiority of the proposed scheme.","PeriodicalId":6753,"journal":{"name":"2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)","volume":"19 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84227458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Weak Target Detection in MIMO Radar via Beamspace Canonical Correlation 基于波束空间典型相关的MIMO雷达弱目标检测
2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM) Pub Date : 2020-06-01 DOI: 10.1109/SAM48682.2020.9104284
M. S. Ibrahim, N. Sidiropoulos
{"title":"Weak Target Detection in MIMO Radar via Beamspace Canonical Correlation","authors":"M. S. Ibrahim, N. Sidiropoulos","doi":"10.1109/SAM48682.2020.9104284","DOIUrl":"https://doi.org/10.1109/SAM48682.2020.9104284","url":null,"abstract":"Reliable detection and accurate estimation of weak targets and their Doppler frequencies is a challenging problem in MIMO radar systems. Reflections from such targets are often overpowered by those from stronger nearby targets and clutter. Considering a 3-D data model where the coherent processing interval comprises multiple pulses, a novel weak target detection and estimation approach is proposed in this paper. The proposed method is based on creating partially overlapping spatial beams, and performing canonical correlation analysis (CCA) in the resulting beamspace. It is shown that if a target is present in the overlap sector, then its Doppler profile can be reliably estimated via beamspace CCA, even if hidden under much stronger interference from nearby targets and clutter. Numerical results are included to validate this theoretical claim, demonstrating that the proposed Beamspace Canonical Correlation (BCC) method yields considerable performance improvement over existing approaches.","PeriodicalId":6753,"journal":{"name":"2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)","volume":"62 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82065440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A Sparse Learning Based Detector with Enhanced Mismatched Signals Rejection Capabilities 一种基于稀疏学习的增强失匹配信号抑制能力检测器
2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM) Pub Date : 2020-06-01 DOI: 10.1109/SAM48682.2020.9104374
Sudan Han, L. Pallotta, G. Giunta, Wanli Ma, D. Orlando
{"title":"A Sparse Learning Based Detector with Enhanced Mismatched Signals Rejection Capabilities","authors":"Sudan Han, L. Pallotta, G. Giunta, Wanli Ma, D. Orlando","doi":"10.1109/SAM48682.2020.9104374","DOIUrl":"https://doi.org/10.1109/SAM48682.2020.9104374","url":null,"abstract":"This paper devises a tunable detection architecture to deal with mismatched signals embedded in Gaussian interference with unknown covariance matrix based on a sparse recovery technique. Specifically, a sparse learning method is exploited to estimate the amplitude and angle of arrival of the possible targets, which are then employed to design detectors relying on the two-stage detection paradigm. Remarkably, the new decision scheme exhibits a bounded-constant false alarm rate property. The performance assessment, carried out through Monte Carlo simulations, shows that the new detectors can outperform classic counterparts in terms of rejecting mismatched signals, while retaining reasonable detection performance for matched signals.","PeriodicalId":6753,"journal":{"name":"2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)","volume":"55 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84463412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Signal waveform design for high resolution target localization in through-the-wall radar 穿壁雷达高分辨率目标定位的信号波形设计
2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM) Pub Date : 2020-06-01 DOI: 10.1109/SAM48682.2020.9104391
Chen Huang, Hongqing Liu, Lu Gan, Zhen Luo, Yi Zhou
{"title":"Signal waveform design for high resolution target localization in through-the-wall radar","authors":"Chen Huang, Hongqing Liu, Lu Gan, Zhen Luo, Yi Zhou","doi":"10.1109/SAM48682.2020.9104391","DOIUrl":"https://doi.org/10.1109/SAM48682.2020.9104391","url":null,"abstract":"This work studies the effects of different waveform designs on the clutter removal and target localization in through-the-wall radar (TWR) system. To removal the wall clutter, its low-rank property is utilized, whereas the sparse property of the target returns is exploited to perform target reconstruction. As a result, a joint low-rank and sparse model is developed where alternating direction method of multipliers (ADMM) is utilized to solve the corresponding optimization. Moreover, to demonstrate the performances of different waveforms, three well-known signals including mono-frequency, stepped-frequency, and frequency-modulated continuous-wave (FMCW) waveforms have been selected for transmit. The experimental results show advantages and disadvantages of each waveform.","PeriodicalId":6753,"journal":{"name":"2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)","volume":"7 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83629362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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