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2021 Signal Processing Symposium (SPSympo)最新文献

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Estimation of Rotational Speed of Helicopter Rotor Through Horizontal Synchrosqueezing 直升机旋翼水平同步压缩转速估计
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593743
K. Abratkiewicz, Jacek Gambrych, K. Stasiak, P. Samczyński
{"title":"Estimation of Rotational Speed of Helicopter Rotor Through Horizontal Synchrosqueezing","authors":"K. Abratkiewicz, Jacek Gambrych, K. Stasiak, P. Samczyński","doi":"10.1109/spsympo51155.2020.9593743","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593743","url":null,"abstract":"This paper presents preliminary results of estimating the rotational speed of a helicopter rotor, using the short-time Fourier transform (STFT) and its concentrated form referred to as horizontal synchrosqueezing (HS) in the time-frequency (TF) domain. The presented theory is supported by real-life data obtained using a small, high-resolution radar system during a measurement campaign. The outcomes illustrated in the paper show a pronounced potential of using TF techniques in the analysis of micro-Doppler radar signals and extracting additional content from target parameters that can be used in classification and parametrization procedures. The paper shows that using the concentrated version of the spectrogram, one can distinguish more details in a non-cooperative target than the classical STFT, which in the presented research was used for assessing target parameters.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"109 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":"114274406","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
Ground Clutter Analyses in Noise Radar using Unmatched Filter Concept 基于非匹配滤波的噪声雷达地杂波分析
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593484
Ł. Maślikowski, M. Bączyk, K. Kulpa, P. Tomikowski
{"title":"Ground Clutter Analyses in Noise Radar using Unmatched Filter Concept","authors":"Ł. Maślikowski, M. Bączyk, K. Kulpa, P. Tomikowski","doi":"10.1109/spsympo51155.2020.9593484","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593484","url":null,"abstract":"The ground clutter is one of the limiting factors for efficient target detection in noise radar. Thus, a full understanding of clutter return is vital for designing and exploitation of noise radar. The paper presents an enhanced method for analyzing ground clutter return free from masking effects originating from direct crosstalk or strong clutter return. The paper presents theoretical considerations and analyses of simulated echoes. The method can be applied for clutter analyses in noise based scatterometer, e.g. used for measuring scattering effects and a better understanding of ground clutter effects in noise radars.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"21 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":"121858870","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
Performance Optimization for Passive Bistatic Radar Based on Detection Range Predictions 基于探测距离预测的被动双基地雷达性能优化
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593804
Marcin Żywek, M. Malanowski
{"title":"Performance Optimization for Passive Bistatic Radar Based on Detection Range Predictions","authors":"Marcin Żywek, M. Malanowski","doi":"10.1109/spsympo51155.2020.9593804","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593804","url":null,"abstract":"The passive radar has a limited number of frequency channels that it can handle and process simultaneously. This number is usually smaller than the number of available illuminators of opportunity that the passive radar could potentially use. The problem is, therefore, how to select transmitters so that optimum performance is obtained. The performance metric considered here is the area where the passive radar can detect the target with a given value of radar cross-section with at least three transmitter-receiver pairs. In the paper, we consider two algorithms for optimal selection of the illuminators of opportunity based on the predicted detection range.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"67 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":"132710094","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
Algorithm of Creating Propagation Attenuation Maps Based on Parabolic Equation Method 基于抛物方程法的传播衰减图生成算法
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593893
Michal Kryk, Krzysztof Malon, J. Kelner
{"title":"Algorithm of Creating Propagation Attenuation Maps Based on Parabolic Equation Method","authors":"Michal Kryk, Krzysztof Malon, J. Kelner","doi":"10.1109/spsympo51155.2020.9593893","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593893","url":null,"abstract":"Modern wireless communication systems use various technological solutions to increase the efficiency of created radio networks. This efficiency also applies to radio resources. To improve it, radio environment maps (REMs) are used. It is common to use the REM in modern ad-hoc mobile networks (MANETs), which are used, e.g., in the military. In this case, the use of new technologies such as software-defined radio and network, cognitive radio, sensing, and building electromagnetic situational awareness made it possible to implement REM in modern MANETs. Propagation attenuation maps are crucial REM elements that allow for determining the ranges of radio network nodes. In this case, considering the topography in propagation maps enables a more realistic analysis. For this aim, in the paper, we propose a novel algorithm of creation propagation attenuation maps based on the parabolic equation method.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"19 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":"115203976","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
Human Sleep Posture Recognition Based on Millimeter-Wave Radar 基于毫米波雷达的人体睡眠姿势识别
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593799
Tao Zhou, Zhaoyang Xia, Xiangfeng Wang, F. Xu
{"title":"Human Sleep Posture Recognition Based on Millimeter-Wave Radar","authors":"Tao Zhou, Zhaoyang Xia, Xiangfeng Wang, F. Xu","doi":"10.1109/spsympo51155.2020.9593799","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593799","url":null,"abstract":"In this paper, we propose a robust human sleep posture recognition method via multidimensional feature representation and learning based on millimeter-wave (mmw) radar. Firstly, through time-frequency processing of the radar echo signal reflected by the human body, the range spectrum, Doppler spectrum, range-Doppler spectrum, azimuth angle spectrum and elevation angle spectrum of the estimated target are obtained. By setting a fixed frame window length and splicing the above feature spectrums, 5 single-channel 2D radar features are obtained, and combining them in parallel can get a variety of different multi-channel 2D radar feature representations. Finally, a lightweight multi-channel convolutional neural network (CNN) with Inception-Residual module (IRM) is designed to learn and classify multidimensional features. Extensive experiments were carried out using the developed mmw radar system, and a large amount of data was obtained to train and test the classifier. The results show that the proposed sleep posture recognition method can effectively distinguish different sleep postures and achieve better robust performance and generalization compared to other methods.","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":"115683171","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: 4
Preliminary Detection Results Obtained with Experimental Airborne Passive Radar 机载无源雷达实验初步探测结果
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593719
R. Rytel-Andrianik, K. Kulpa, K. Stasiak, M. Malanowski
{"title":"Preliminary Detection Results Obtained with Experimental Airborne Passive Radar","authors":"R. Rytel-Andrianik, K. Kulpa, K. Stasiak, M. Malanowski","doi":"10.1109/spsympo51155.2020.9593719","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593719","url":null,"abstract":"The advantages of passive radars include quiet operation and the ability to detect targets that were designed to be “stealth” for active monostatic radars utilizing higher frequency bands. As the technology of ground-based passive radars is already quite established, airborne passive radars are rather new and are being actively developed. In the paper, we present the first results obtained in the prototype airborne passive radar that instead of its own transmitter utilizes omnipresent Digital Video Broadcasting - Terrestrial (DVB-T) television broadcast. The radar system structure and algorithms are described. Then examples of clearly visible echoes of a fighter jet and a ship are presented.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"28 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":"126025582","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
Improved Wireless Capsule Endoscope Localization with Phase Detection Algorithm 基于相位检测算法的改进无线胶囊内窥镜定位
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593795
Pawel Oleksy, Ł. Januszkiewicz
{"title":"Improved Wireless Capsule Endoscope Localization with Phase Detection Algorithm","authors":"Pawel Oleksy, Ł. Januszkiewicz","doi":"10.1109/spsympo51155.2020.9593795","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593795","url":null,"abstract":"Wireless capsule endoscopes record and transmit pictures that are used to diagnose the human digestive tract. The localization of the capsule allows precise identification of regions with lesions. This can be performed basing on the processing of signal received from the capsule. Since human body is complex heterogenous environment, that influences the propagation of wireless signal it is difficult to precisely determine the distance between the transmitter and the receiver upon the analysis of received power level. The article presents the improved method of locating endoscope capsules with the use of phase detection algorithm. This algorithm applies adaptive estimation of human body model permittivity for each capsule position. Also the influence of helical and dipole antennas on the localization accuracy were examined.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"3 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":"128680312","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
Localization of an Acoustic Emission Source Based on Time Difference of Arrival 基于到达时差的声发射源定位
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593909
Mariia Khyzhniak, M. Malanowski
{"title":"Localization of an Acoustic Emission Source Based on Time Difference of Arrival","authors":"Mariia Khyzhniak, M. Malanowski","doi":"10.1109/spsympo51155.2020.9593909","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593909","url":null,"abstract":"The paper presents results of localization of an acoustic emission source in the two-dimensional space based on signals acquired using microphones and the TDoA (Time Difference of Arrival) technique. The delay between signals in the channels is measured using their cross-correlation. Then the location is obtained using multilateration. The Firefly Algorithm and Gradient Descent Algorithm are used for the purpose of estimating the location.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"48 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":"124482152","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
Power Amplifier Distortions on Radar Signals for Spectral Coexistence 频谱共存条件下雷达信号的功率放大器畸变
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593851
V. Carotenuto, A. Aubry, A. De Maio, A. Izzo, A. Farina, R. S. Lo Moriello
{"title":"Power Amplifier Distortions on Radar Signals for Spectral Coexistence","authors":"V. Carotenuto, A. Aubry, A. De Maio, A. Izzo, A. Farina, R. S. Lo Moriello","doi":"10.1109/spsympo51155.2020.9593851","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593851","url":null,"abstract":"This paper deals with the effects of Power Amplifiers (PAs) on radar waveforms designed to ensure spectral compatibility with other Radio Frequency (RF) wireless systems cohabitating in the same frequency band. To this end, a specific hardware-in-the-loop test-bed composed of a Personal Computer (PC), an Arbitrary Waveform Generator (AWG), a nonlinear PA, and a Signal Analyser (SA) is designed. It allows to gather measurements of the amplified signal and to grasp unwanted modifications of its spectral features due to the PA nonlinear distortion. Besides, it permits a quantitative assessment of the discrepancies between the nominal and the actual interference power injected by the radar in the shared frequency bandwidths. To alleviate the spectral distortions induced by the PA and improve spectral coexistence, the use of a Digital Pre-Distortion (DPD) stage upstream the PA is investigated. Modeling techniques together with parameters inference are discussed and applied to the measured waveforms. The obtained experimental results highlight that pairing a suitable waveform design strategy with a DPD processing represents a viable means to mitigate the PA distortions and to realize spectral coexistence.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"109 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":"123731209","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 Modeling Problem of a Continuous-Time Domain Signal and Its Discrete Counterpart 连续时域信号及其离散对应信号的建模问题
2021 Signal Processing Symposium (SPSympo) Pub Date : 2021-09-20 DOI: 10.1109/spsympo51155.2020.9593445
B. Szlachetko, Z. Swietach
{"title":"A Modeling Problem of a Continuous-Time Domain Signal and Its Discrete Counterpart","authors":"B. Szlachetko, Z. Swietach","doi":"10.1109/spsympo51155.2020.9593445","DOIUrl":"https://doi.org/10.1109/spsympo51155.2020.9593445","url":null,"abstract":"In this paper, a new class of continuous in the time domain signals is proposed. Its equivalent discrete versions are also considered. The paper presents the necessary analytical formulae to prove the desired properties of the continuous spectrum as well as the discrete spectrum. These signals are practically pass-band restricted up to the level of relevance equals −120 dB. The proposed signals can be used to test any passband system such as radar, telecommunication, and others. In particular, these signals are suitable for testing hybrid systems where continuous and discrete-time domains are mixed. The signals proposed here fill tightly the entire usable bandwidth of a hybrid system. That means no frequency bins are omitted during the design and testing. This is an important feature for the accuracy of computer simulations. Good accuracy of computer simulations gives a strong promise for a hardware implementation of such a system, suitable for engineering applications. The authors also suggest the use of a few percent guard bands at both ends of the useful band. Therefore, the effect of the guard bands on the quality of the continuous spectrum representation into finite computer memory is also deliberated.","PeriodicalId":380515,"journal":{"name":"2021 Signal Processing Symposium (SPSympo)","volume":"34 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":"126276775","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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