Pub Date : 2015-06-10DOI: 10.1109/SPS.2015.7168255
Omer Kayaalti, M. H. Asyali
Activity recognition is an important subject with many applications in health care, emergency care, and assisted living. Nowadays, activity information can be acquired using small accelerometers connected to the body, including the ones available in smartphones. In this study, we assessed the influence of autoregressive model parameters or features on activity detection or classification. Our results indicate that, compared to relatively simple features such as first order statistics, autoregressive model features have rather low impact in determining or improving performance of automatic activity detection using machine intelligence.
{"title":"Comparison of first order statistical and autoregressive model features for activity prediction","authors":"Omer Kayaalti, M. H. Asyali","doi":"10.1109/SPS.2015.7168255","DOIUrl":"https://doi.org/10.1109/SPS.2015.7168255","url":null,"abstract":"Activity recognition is an important subject with many applications in health care, emergency care, and assisted living. Nowadays, activity information can be acquired using small accelerometers connected to the body, including the ones available in smartphones. In this study, we assessed the influence of autoregressive model parameters or features on activity detection or classification. Our results indicate that, compared to relatively simple features such as first order statistics, autoregressive model features have rather low impact in determining or improving performance of automatic activity detection using machine intelligence.","PeriodicalId":193902,"journal":{"name":"2015 Signal Processing Symposium (SPSympo)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121676034","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}
Pub Date : 2015-06-10DOI: 10.1109/SPS.2015.7168280
M. Momot, A. Momot, E. Piekar
The paper presents the concept of selective transmission of the ECG signal between the recorder located on the body of the monitored person and the mobile device. This concept is based on the possibility of energy saving by transmitting only necessary parts of signal. For the ECG, the most important data consist of waves P-QRS-T waves, located only in a neighborhood of the central point on timeline. This suggests methods of predicting the position of the center points of subsequent cardiac cycles in order to select fragments to be transmitted. The paper proposes use of the regression function to determine the positions of these points on the basis of a finite number of values recorded in recent history. The parameters of the regression function are selected using an algorithm of robust estimation.
{"title":"R-R interval prediction for adaptive sensing of ECG signal using robust regression","authors":"M. Momot, A. Momot, E. Piekar","doi":"10.1109/SPS.2015.7168280","DOIUrl":"https://doi.org/10.1109/SPS.2015.7168280","url":null,"abstract":"The paper presents the concept of selective transmission of the ECG signal between the recorder located on the body of the monitored person and the mobile device. This concept is based on the possibility of energy saving by transmitting only necessary parts of signal. For the ECG, the most important data consist of waves P-QRS-T waves, located only in a neighborhood of the central point on timeline. This suggests methods of predicting the position of the center points of subsequent cardiac cycles in order to select fragments to be transmitted. The paper proposes use of the regression function to determine the positions of these points on the basis of a finite number of values recorded in recent history. The parameters of the regression function are selected using an algorithm of robust estimation.","PeriodicalId":193902,"journal":{"name":"2015 Signal Processing Symposium (SPSympo)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116769056","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}
Pub Date : 2015-06-10DOI: 10.1109/SPS.2015.7168257
C. Nahum
RADAR techniques are very useful for several applications, in particular for Defence activities. They deliver a “picture” of the environment (SAR) allowing detection, tracking and even recognition of targets (ISAR) whatever the weather. But in order to be exploited, they have to fulfil some specific requirements such as real-time running, storage constraint, transmission time, carrier integration... Moreover, the interpretation of the information, such as that contained in a SAR image is not straightforward. This presentation aims to give an overview of several RADAR signal processing techniques, highlighting the constraints scientists have to cope with, when dealing with particular applications such as military activities.
{"title":"Requirements of RADAR techniques for defence activities","authors":"C. Nahum","doi":"10.1109/SPS.2015.7168257","DOIUrl":"https://doi.org/10.1109/SPS.2015.7168257","url":null,"abstract":"RADAR techniques are very useful for several applications, in particular for Defence activities. They deliver a “picture” of the environment (SAR) allowing detection, tracking and even recognition of targets (ISAR) whatever the weather. But in order to be exploited, they have to fulfil some specific requirements such as real-time running, storage constraint, transmission time, carrier integration... Moreover, the interpretation of the information, such as that contained in a SAR image is not straightforward. This presentation aims to give an overview of several RADAR signal processing techniques, highlighting the constraints scientists have to cope with, when dealing with particular applications such as military activities.","PeriodicalId":193902,"journal":{"name":"2015 Signal Processing Symposium (SPSympo)","volume":"146 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129814879","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}
Pub Date : 2015-06-10DOI: 10.1109/SPS.2015.7168291
Y. Averyanova, A. Averyanov, F. Yanovsky
In this paper we analize the influence of dynamic atmospheric phenomena on drops behavior. Then we discuss possibility to connect reflected signal characteristics with scatterer polarization basis taking into account polarization features of electromagnetic wave. Information about drop polarization basis helps to improve data analysis and interpretation about atmospheric state and processes including wind related phenomena when signal processing.
{"title":"Dynamics of drop polarization basis under atmospheric factors influence","authors":"Y. Averyanova, A. Averyanov, F. Yanovsky","doi":"10.1109/SPS.2015.7168291","DOIUrl":"https://doi.org/10.1109/SPS.2015.7168291","url":null,"abstract":"In this paper we analize the influence of dynamic atmospheric phenomena on drops behavior. Then we discuss possibility to connect reflected signal characteristics with scatterer polarization basis taking into account polarization features of electromagnetic wave. Information about drop polarization basis helps to improve data analysis and interpretation about atmospheric state and processes including wind related phenomena when signal processing.","PeriodicalId":193902,"journal":{"name":"2015 Signal Processing Symposium (SPSympo)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124064865","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}
Pub Date : 2015-06-10DOI: 10.1109/SPS.2015.7168307
K. Ndini, D. Gromek, M. Wielgo, P. Samczyński, M. Malanowski
This paper presents the design and implementation of a C-band Analog-Front-End (AFE) for Frequency Modulated Continuous Wave (FMCW) Radar. This AFE is based on commercial off-the-shelf (COTS) radio frequency components. The system was designed to be used in various radar applications, including short range mode, Synthetic Aperture Radar (SAR) and Inverse Synthetic Aperture Radar (ISAR). The AFE system was designed as a homodyne system, so final applications are based on FMCW radar. Experiments carried out in the laboratory and in the open air environments included moving target detection, ISAR imaging of boats and SAR trails using an airborne platform are presented. The results are discussed keeping in mind a perspective of future work and further improvements.
{"title":"C-band FMCW radar analog-front-end for SAR/ISAR applications","authors":"K. Ndini, D. Gromek, M. Wielgo, P. Samczyński, M. Malanowski","doi":"10.1109/SPS.2015.7168307","DOIUrl":"https://doi.org/10.1109/SPS.2015.7168307","url":null,"abstract":"This paper presents the design and implementation of a C-band Analog-Front-End (AFE) for Frequency Modulated Continuous Wave (FMCW) Radar. This AFE is based on commercial off-the-shelf (COTS) radio frequency components. The system was designed to be used in various radar applications, including short range mode, Synthetic Aperture Radar (SAR) and Inverse Synthetic Aperture Radar (ISAR). The AFE system was designed as a homodyne system, so final applications are based on FMCW radar. Experiments carried out in the laboratory and in the open air environments included moving target detection, ISAR imaging of boats and SAR trails using an airborne platform are presented. The results are discussed keeping in mind a perspective of future work and further improvements.","PeriodicalId":193902,"journal":{"name":"2015 Signal Processing Symposium (SPSympo)","volume":"296 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124246235","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}
Pub Date : 2015-06-10DOI: 10.1109/SPS.2015.7168287
C. Kabakchiev, I. Garvanov, V. Behar, D. Kabakchieva, P. Buist, M. Bentum
This paper focuses on the Time of Arrival (TOA) estimation problem related to new application of pulsar signals for airplane-based navigation. The aim of the paper is to propose and evaluate a possible algorithm for TOA estimation that consists of epoch folding, filtering, CFAR detection, cross-correlation and TOA calculation. The TOA estimation algorithm proposed is verified using real experimental data obtained from the Westerbork radio observatory in The Netherlands. The performance of the proposed TOA algorithm is evaluated in terms of SNR at the cross-correlator input and the TOA accuracy.
{"title":"Time of arrival estimation in pulsar-based navigation systems","authors":"C. Kabakchiev, I. Garvanov, V. Behar, D. Kabakchieva, P. Buist, M. Bentum","doi":"10.1109/SPS.2015.7168287","DOIUrl":"https://doi.org/10.1109/SPS.2015.7168287","url":null,"abstract":"This paper focuses on the Time of Arrival (TOA) estimation problem related to new application of pulsar signals for airplane-based navigation. The aim of the paper is to propose and evaluate a possible algorithm for TOA estimation that consists of epoch folding, filtering, CFAR detection, cross-correlation and TOA calculation. The TOA estimation algorithm proposed is verified using real experimental data obtained from the Westerbork radio observatory in The Netherlands. The performance of the proposed TOA algorithm is evaluated in terms of SNR at the cross-correlator input and the TOA accuracy.","PeriodicalId":193902,"journal":{"name":"2015 Signal Processing Symposium (SPSympo)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127952028","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}
Pub Date : 2015-06-10DOI: 10.1109/SPS.2015.7168297
K. Radecki, P. Samczyński, K. Kulpa, J. Drozdowicz
This paper presents the comparison of three implementations of an unfocused SAR algorithm in various platform variants. The first presented solution was implemented using G programming language LabVIEW and GPU toolkits for efficient computations on graphical processor. The others two implementations were written in C++ with CUDA tools and two different computing platforms. The main aim was to create the implementation capable to perform real-time computations using simplified unfocused SAR algorithm. The presented solutions were tested on real radar data collected during SAR campaign using small aircraft as a radar carrier. This work is a backend to create an UAV-based small and light SAR system with real-time on-board capabilities.
{"title":"Implementation of a real-time unfocused SAR algorithm using various computing platforms","authors":"K. Radecki, P. Samczyński, K. Kulpa, J. Drozdowicz","doi":"10.1109/SPS.2015.7168297","DOIUrl":"https://doi.org/10.1109/SPS.2015.7168297","url":null,"abstract":"This paper presents the comparison of three implementations of an unfocused SAR algorithm in various platform variants. The first presented solution was implemented using G programming language LabVIEW and GPU toolkits for efficient computations on graphical processor. The others two implementations were written in C++ with CUDA tools and two different computing platforms. The main aim was to create the implementation capable to perform real-time computations using simplified unfocused SAR algorithm. The presented solutions were tested on real radar data collected during SAR campaign using small aircraft as a radar carrier. This work is a backend to create an UAV-based small and light SAR system with real-time on-board capabilities.","PeriodicalId":193902,"journal":{"name":"2015 Signal Processing Symposium (SPSympo)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121443544","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}
Pub Date : 2015-06-10DOI: 10.1109/SPS.2015.7168302
C. Kabakchiev, I. Garvanov, V. Behar, D. Kabakchieva, K. Kabakchiev, H. Rohling, K. Kulpa, A. Yarovoy
This paper focuses on scientific issues related to new application of GPS in the construction and development of radar networks using the effect of Forward Scatter (FS) of electromagnetic waves for detection of objects by using of their GPS radio shadows. The paper theme is new, it combines two thematic areas: processing of GPS signals and processing of radar signals in FS radar systems.
{"title":"Signal processing of GPS radio shadows formed by moving targets","authors":"C. Kabakchiev, I. Garvanov, V. Behar, D. Kabakchieva, K. Kabakchiev, H. Rohling, K. Kulpa, A. Yarovoy","doi":"10.1109/SPS.2015.7168302","DOIUrl":"https://doi.org/10.1109/SPS.2015.7168302","url":null,"abstract":"This paper focuses on scientific issues related to new application of GPS in the construction and development of radar networks using the effect of Forward Scatter (FS) of electromagnetic waves for detection of objects by using of their GPS radio shadows. The paper theme is new, it combines two thematic areas: processing of GPS signals and processing of radar signals in FS radar systems.","PeriodicalId":193902,"journal":{"name":"2015 Signal Processing Symposium (SPSympo)","volume":"42 44","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131501011","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}
Pub Date : 2015-06-10DOI: 10.1109/SPS.2015.7168311
E. Sedek, R. Słomski
In this paper the need for research on Microwave Direct Energy Weapons (ADSs) is argued. Devices developed both in the United States and the Russian Federation are presented.
本文论述了研究微波直接能武器的必要性。介绍了在美国和俄罗斯联邦开发的设备。
{"title":"Overview of Microwave Direct Energy Weapons","authors":"E. Sedek, R. Słomski","doi":"10.1109/SPS.2015.7168311","DOIUrl":"https://doi.org/10.1109/SPS.2015.7168311","url":null,"abstract":"In this paper the need for research on Microwave Direct Energy Weapons (ADSs) is argued. Devices developed both in the United States and the Russian Federation are presented.","PeriodicalId":193902,"journal":{"name":"2015 Signal Processing Symposium (SPSympo)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132959904","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}
Pub Date : 2015-06-10DOI: 10.1109/SPS.2015.7168268
A. Raniszewski
This paper presents a new concept of corrugated horn array antenna for high-resolution SAR application. The array antenna works with dual polarization, which provides additional information for signal processing techniques. The reflection coefficient |S11| ≤-20dB for system bandwidth is greater than 2.5GHz at X-band. Each element of the antenna array is placed into triangular mesh what implies sidelobes suppression below -25 dB.
{"title":"A new concept of dual-polarized, wideband corrugated horn array antenna for high-resolution SAR application","authors":"A. Raniszewski","doi":"10.1109/SPS.2015.7168268","DOIUrl":"https://doi.org/10.1109/SPS.2015.7168268","url":null,"abstract":"This paper presents a new concept of corrugated horn array antenna for high-resolution SAR application. The array antenna works with dual polarization, which provides additional information for signal processing techniques. The reflection coefficient |S11| ≤-20dB for system bandwidth is greater than 2.5GHz at X-band. Each element of the antenna array is placed into triangular mesh what implies sidelobes suppression below -25 dB.","PeriodicalId":193902,"journal":{"name":"2015 Signal Processing Symposium (SPSympo)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133457443","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}
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