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2021 Signal Processing Symposium (SPSympo)最新文献

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Experimental studies on the efficiency of people authentication using EEG data from the same and different examinations 利用相同和不同测试的脑电数据对人的身份验证效率进行了实验研究
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593800
Renata Plucinska, K. Jędrzejewski, Jacek Rogala, U. Malinowska, Marek Waligóra
{"title":"Experimental studies on the efficiency of people authentication using EEG data from the same and different examinations","authors":"Renata Plucinska, K. Jędrzejewski, Jacek Rogala, U. Malinowska, Marek Waligóra","doi":"10.1109/spsympo51155.2020.9593800","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593800","url":null,"abstract":"The paper presents the results of preliminary studies on the authentication of human subjects using electroencephalography (EEG) signals. Many research results in the literature assume that the data used both for training and testing may come from the same set. In this work, we verified how the authentication results change if the data used for training and testing are from separated recording sessions. The examinations used in the studies were collected from 36 healthy adults and 20 EEG sessions were planned for each person. We evaluated the statistical metrics of the considered authentication methods based on the analysis of signal features (parameters) from different EEG bands: separately for delta, theta, alpha, beta, and gamma, as well as for the combinations of features from the different EEG bands. In the first approach, the first 15 examinations from each participant were used for training and the remaining 5 for testing. In the second approach, 75 % of features from each session were used for training and the remaining 25 % for testing. The results show that the statistical metrics of authentication analysis obtained using signals from the same set, both for training and testing, turned out to be better than when we split the data using individual sets for training and examination. In practice, the authentication is performed based on a current examination, different from the ones used for training. Therefore, for the proper evaluation of the authentication methods, only the metrics obtained when the examinations used for training and testing are separated should be used. The results also suggest that there are significant statistical differences in accuracy and sensitivity between the two approaches.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"73 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121009645","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
Non-coherent change detection in real SAR satellite imagery with usage of the CFAR algorithms 基于CFAR算法的真实SAR卫星图像非相干变化检测
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593378
A. Gromek
{"title":"Non-coherent change detection in real SAR satellite imagery with usage of the CFAR algorithms","authors":"A. Gromek","doi":"10.1109/spsympo51155.2020.9593378","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593378","url":null,"abstract":"Change detection in synthetic aperture radar (SAR) imagery is a demanding task due to the intrinsic speckle-noise accompanying the images. In general, it can be divided onto coherent (CCD) and non-coherent (NCCD) change detection methods. In the case of coherent methods, we have an increased sensitivity to changes (due to taking into account phase information) at the expense of incorporating phase noise, which in turn increases the level of false detections. In the case of incoherent methods, we do not take into account signal phase information but only its amplitude (or power), which results in a lower sensitivity to changes and also much lower level of false alarms. Therefore, incoherent detectors often demonstrates better operating performance (ROC1 curves) than coherent ones - while being simpler, more reliable and easier to handle. In this article, author will focus on SAR imagery non-coherent change detection based on constant false alarm rate (CFAR) algorithms.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117276029","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
Analysis of Error in Sound Sources Position Estimation with Microphone Arrays 传声器阵列声源位置估计误差分析
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593632
M. Rosa-Zurera, M. Utrilla-Manso, R. Gil-Pita, Joaquín García-Gómez
{"title":"Analysis of Error in Sound Sources Position Estimation with Microphone Arrays","authors":"M. Rosa-Zurera, M. Utrilla-Manso, R. Gil-Pita, Joaquín García-Gómez","doi":"10.1109/spsympo51155.2020.9593632","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593632","url":null,"abstract":"This paper presents a study of errors in sound source position estimation with two microphone arrays. At least two microphone arrays are needed to estimate the position of sound sources, and the position is obtained by solving a system of linear equations whose coefficients depend on the estimated angles of arrival. Due to errors in the estimation of the direction of arrival, the estimated positions of the sound sources could be wrong. Furthermore, the statistical distribution of the position error is not unique in the surveillance area. A mathematical upper bound for the error at each position has been obtained, but this bound is not accurate enough for real applications, which motivates the development of an alternative method based on Monte-Carlo simulations. This method has been applied to a two-array system, showing that the area where the position is accurately estimated is small, suggesting the use of array networks for surveillance of wide areas.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124528030","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
Mitigating of received signal power loss caused by multipath effect in phased array radars 减轻相控阵雷达中多径效应引起的接收信号功率损失
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593386
Jacek Gambrych
{"title":"Mitigating of received signal power loss caused by multipath effect in phased array radars","authors":"Jacek Gambrych","doi":"10.1109/spsympo51155.2020.9593386","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593386","url":null,"abstract":"The author presents a method to mitigate received signal power loss in presence of the multipath effect. The method is dedicated to phased array radars. It is based on the observation that signal amplitudes from various antenna elements may significantly vary between each other in the multipath scenario and uses beamforming with modified weights adjusted to these amplitudes. As a result, the improvement of Signal-to-Noise Ratio of 2–3 dB is possible to obtain. The results of the method were based on simulations performed. Moreover, a negative impact on the antenna receiving pattern and sensitivity to changes in surface reflection coefficient has been discussed.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125455212","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 Conditioning for DAB-Illuminated Passive Radar dab照明无源雷达的信号调理
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593458
G. Mazurek
{"title":"Signal Conditioning for DAB-Illuminated Passive Radar","authors":"G. Mazurek","doi":"10.1109/spsympo51155.2020.9593458","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593458","url":null,"abstract":"In this paper, we present the signal processing algorithm for improving DAB signals received in the Passive Coherent Location (PCL) system. Due to the synchronous time-domain structure of the DAB signal, there are artifacts visible in bistatic velocity/range images that repeat regularly and distort the detection results. We investigate the structure of the DAB signal and its impact on the signal's autocorrelation function. There are periodic peaks in the autocorrelation function that result from the repetition of deterministic portions in DAB frames. Such properties of the signal are not desirable in PCL because of detection performance degradation. We propose the algorithm to suppress the unwanted autocorrelation peaks by removing a few symbols from the DAB frame. The experimental results with real DAB signal show that it is possible to eliminate these peaks by proper selection of the symbols to remove.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"70 5 PT.1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132052148","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
On Non-Gaussian Stochastic Parametrization 非高斯随机参数化
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593873
P. Dewilde
{"title":"On Non-Gaussian Stochastic Parametrization","authors":"P. Dewilde","doi":"10.1109/spsympo51155.2020.9593873","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593873","url":null,"abstract":"The paper addresses the question of parametrization with, independent parameters for a multi-variable, non-Gaussian set of stochastic variables, based on higher order moments. The issue is particularly relevant for the construction of low-complexity models that meet measured correlation data between powers of the variables. It turns out that such a parametrization exists in the case where the correlation data is stricty ordered by increasing degree, and the paper shows in outline how it can be constructed.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133252730","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
Multitaper Time-Frequency Reassigned Spectrogram in Micro-Doppler Radar Signal Analysis 微多普勒雷达信号分析中的多锥度时频重分配谱图
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593356
K. Abratkiewicz, P. Samczyński
{"title":"Multitaper Time-Frequency Reassigned Spectrogram in Micro-Doppler Radar Signal Analysis","authors":"K. Abratkiewicz, P. Samczyński","doi":"10.1109/spsympo51155.2020.9593356","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593356","url":null,"abstract":"This paper presents the concept of using the multitaper time-frequency (TF) reassigned spectrogram in the context of micro-Doppler signal analysis used in radar applications. Firstly, the theoretical background essential for understanding the further analysis and implementation of the considered method is presented. The authors give a detailed description of the multitaper TF reassignment technique and its advantages, such as improved component separability on a plane. Next, simulation results highlighting the advantages of multitaper reassignment in the context of applying it in micro-Doppler analyses are illustrated. The numerical experiment is thoroughly examined from the perspective of micro-Doppler applications, allowing the components which contribute the most to remain visible on the TF distribution. Finally, real data collected by a compact short-range radar system is processed, verifying the use of the proposed technique in real operating radars by energy concentration and averaging noise.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129136275","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: 5
Calibration of Transmitting and Receiving Array of a Radar using MIMO Measurement 用MIMO测量标定雷达发射和接收阵列
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593475
L. Maslikowski
{"title":"Calibration of Transmitting and Receiving Array of a Radar using MIMO Measurement","authors":"L. Maslikowski","doi":"10.1109/spsympo51155.2020.9593475","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593475","url":null,"abstract":"This paper presents a simple method allowing to extract information of unknown phase offsets between elements of transmitting and receiving antenna arrays in a collocated MIMO radar. It is shown how to extract independent vectors of phase offsets between receiving and transmitting elements using normalization with averaging as well as SVD decomposition of measurement matrix obtained for observation of calibration target placed at the known angular position.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131086544","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
Resource Allocation in Correlated and Non-Correlated MIMO Systems 相关与非相关MIMO系统中的资源分配
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593782
Stefan Klobe, A. Ahrens, C. Lange, I. Müller, Petra Leitert, J. Zaščerinska
{"title":"Resource Allocation in Correlated and Non-Correlated MIMO Systems","authors":"Stefan Klobe, A. Ahrens, C. Lange, I. Müller, Petra Leitert, J. Zaščerinska","doi":"10.1109/spsympo51155.2020.9593782","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593782","url":null,"abstract":"The multiple-input multiple-output (MIMO) transmission concept targets at increasing the throughput of communication links by employing multiple transmit and receive antennas. As regularly in digital transmission, for such systems the bit-error probability is the crucial quality criterion - also known as the bit-error ratio (BER). If simple MIMO transmission channel and data source models are assumed, the BER can be computed analytically and the system under consideration can be optimized with the respect to a minimum BER. In this contribution, we consider BER minimization for MIMO links with uncertainty in their channel parameters under good and poor scattering conditions. Optimal solutions such as the Lagrange multiplier method regarding bit and power allocation in the transmitter are designed to achieve the best link performance. However, suboptimum solutions are able to achieve a similar performance with a significantly lower complexity. The obtained analytical results show that the achievable performance strongly depends on the number of active MIMO layers as well as the assigned transmit power per layer and the number of bits per transmitted symbol. Furthermore it turns out that the natural choice of creating MIMO layers with identical BER's does not guarantee the best performance.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125404954","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
Effects of SAR Resolution in Automatic Building Segmentation Using CNN SAR分辨率对CNN自动建筑物分割的影响
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593636
Sandhi Wangiyana, P. Samczyński, A. Gromek
{"title":"Effects of SAR Resolution in Automatic Building Segmentation Using CNN","authors":"Sandhi Wangiyana, P. Samczyński, A. Gromek","doi":"10.1109/spsympo51155.2020.9593636","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593636","url":null,"abstract":"Successful deep learning (DL) models for Synthetic Aperture Radar (SAR) images mostly require high-resolution images. The lack of datasets for historical and publicly available SAR images in high-resolution quality limits DL applications for SAR. We simulate SAR resolution scaling by applying filters with varying strengths in the preprocessing step of the dataset. A segmentation model is trained on each dataset along with different model architecture and backbone. The Feature Pyramid Network (FPN) model achieved the best results while being robust for datasets with weak filtering.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"220 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121548270","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
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