Pub Date : 2018-06-01DOI: 10.23919/IRS.2018.8447930
M. Sokol, P. Galajda, S. Slovák, M. Pecovský
This paper describes a design of differential amplifier with modified Cherry-Hooper structure and emitter follower stages. The amplifier is designed for M-sequence UWB radar sensor applications and can be also utilized as a driver for specialized UWB coupled antenna. The circuit structure is designed and fabricated in 0.35 μm SiGe BiCMOS technology and has been designed for 13 GHz bandwidth with 15 dB single-ended gain. The amplifier structure consumes 450 mW from a −3.3 V supply. Parameters value of this amplifier were obtained from pre-layout and post-layout simulations.
{"title":"Modified Cherry-Hooper Amplifier for UWB Applications in 0.35 μm SiGe BiCMOS Technology","authors":"M. Sokol, P. Galajda, S. Slovák, M. Pecovský","doi":"10.23919/IRS.2018.8447930","DOIUrl":"https://doi.org/10.23919/IRS.2018.8447930","url":null,"abstract":"This paper describes a design of differential amplifier with modified Cherry-Hooper structure and emitter follower stages. The amplifier is designed for M-sequence UWB radar sensor applications and can be also utilized as a driver for specialized UWB coupled antenna. The circuit structure is designed and fabricated in 0.35 μm SiGe BiCMOS technology and has been designed for 13 GHz bandwidth with 15 dB single-ended gain. The amplifier structure consumes 450 mW from a −3.3 V supply. Parameters value of this amplifier were obtained from pre-layout and post-layout simulations.","PeriodicalId":436201,"journal":{"name":"2018 19th International Radar Symposium (IRS)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128222639","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 : 2018-06-01DOI: 10.23919/IRS.2018.8448059
C. Kabakchiev, I. Garvanov, V. Behar, A. Kabakchiev, D. Kabakchieva, H. Rohling, Krzysztof Kulpa, A. Yarovoy
In this paper, by comparing the GPS shadow parameters of the same cars obtainedf om the same satellites and recorded by the two different systems under the same conditions, the Stereo dual GNSSfi ont end (NSL’s) and the GPS recording system of the Colorado University, we assess indirectly the capabilities of the new system for FSR applications.
{"title":"Comparative Analysis of Two GPS Forward Scattering Systems For Cars Parameter Estimation","authors":"C. Kabakchiev, I. Garvanov, V. Behar, A. Kabakchiev, D. Kabakchieva, H. Rohling, Krzysztof Kulpa, A. Yarovoy","doi":"10.23919/IRS.2018.8448059","DOIUrl":"https://doi.org/10.23919/IRS.2018.8448059","url":null,"abstract":"In this paper, by comparing the GPS shadow parameters of the same cars obtainedf om the same satellites and recorded by the two different systems under the same conditions, the Stereo dual GNSSfi ont end (NSL’s) and the GPS recording system of the Colorado University, we assess indirectly the capabilities of the new system for FSR applications.","PeriodicalId":436201,"journal":{"name":"2018 19th International Radar Symposium (IRS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127961270","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 : 2018-06-01DOI: 10.23919/IRS.2018.8448056
H. Kabakchiev, V. Behar, I. Garvanov, D. Kabakchieva, A. Kabakchiev, H. Rohling, M. Bentum, J. Fernandes
In this paper, one possible algorithm for target detection and velocity estimation in a pulsar FSR system is proposed. In this processing algorithm, two approaches for extraction of the target signal from the input mixture “direct pulsar signal + reradiated target signal” are studied and compared. The signal processing algorithm is evaluated by computer simulation.
{"title":"Separation Of Pulsar Signals In FSR System","authors":"H. Kabakchiev, V. Behar, I. Garvanov, D. Kabakchieva, A. Kabakchiev, H. Rohling, M. Bentum, J. Fernandes","doi":"10.23919/IRS.2018.8448056","DOIUrl":"https://doi.org/10.23919/IRS.2018.8448056","url":null,"abstract":"In this paper, one possible algorithm for target detection and velocity estimation in a pulsar FSR system is proposed. In this processing algorithm, two approaches for extraction of the target signal from the input mixture “direct pulsar signal + reradiated target signal” are studied and compared. The signal processing algorithm is evaluated by computer simulation.","PeriodicalId":436201,"journal":{"name":"2018 19th International Radar Symposium (IRS)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129639233","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 : 2018-06-01DOI: 10.23919/IRS.2018.8447995
A. Al-Khalidi, K. Alharbi, Jue Wang, E. Wasige
This paper presents a compact, low power consumption and low cost resonant tunneling diode (RTD) based terahertz (THz) source technology for automotive radar applications. Large RTD sizes of 4×4 μm2 are manufactured using the low cost photolithography technology with a total chip size of 470×530 μm2. The measured oscillation frequency was 260 GHz and the oscillator exhibits a low power consumption of 200 mW and a record output power of 1 mW.
{"title":"A Compact Terahertz Source Technology for Automotive Radar and Other Applications","authors":"A. Al-Khalidi, K. Alharbi, Jue Wang, E. Wasige","doi":"10.23919/IRS.2018.8447995","DOIUrl":"https://doi.org/10.23919/IRS.2018.8447995","url":null,"abstract":"This paper presents a compact, low power consumption and low cost resonant tunneling diode (RTD) based terahertz (THz) source technology for automotive radar applications. Large RTD sizes of 4×4 μm<sup>2</sup> are manufactured using the low cost photolithography technology with a total chip size of 470×530 μm<sup>2</sup>. The measured oscillation frequency was 260 GHz and the oscillator exhibits a low power consumption of 200 mW and a record output power of 1 mW.","PeriodicalId":436201,"journal":{"name":"2018 19th International Radar Symposium (IRS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128164090","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 : 2018-06-01DOI: 10.23919/IRS.2018.8447979
Le Yang, Gang Li
In this paper, we aim to recognize dynamic hand gestures by analyzing the sparse micro-Doppler radar signatures collected by dual-band radar sensors. The radar echoes are firstly mapped into the time-frequency domain through the Gaussian-windowed Fourier dictionary at each radar sensor. Then the sparse time-frequency features are extracted via the orthogonal matching pursuit (OMP) algorithm. Finally, the sparse time-frequency features extracted at dual-band radar sensors are fused and inputted into the modified-Hausdorff-distance-based nearest neighbor (NN) classifier to achieve the dynamic hand gesture classification. The experimental results based on the measured data demonstrate that 1) the classification accuracy using dual-band radar sensors is higher than that using only single band radar sensor; 2) the classification accuracy can be improved as the percentage of training data is increased.
{"title":"Sparsity Aware Dynamic Gesture Classification Using Dual-band Radar","authors":"Le Yang, Gang Li","doi":"10.23919/IRS.2018.8447979","DOIUrl":"https://doi.org/10.23919/IRS.2018.8447979","url":null,"abstract":"In this paper, we aim to recognize dynamic hand gestures by analyzing the sparse micro-Doppler radar signatures collected by dual-band radar sensors. The radar echoes are firstly mapped into the time-frequency domain through the Gaussian-windowed Fourier dictionary at each radar sensor. Then the sparse time-frequency features are extracted via the orthogonal matching pursuit (OMP) algorithm. Finally, the sparse time-frequency features extracted at dual-band radar sensors are fused and inputted into the modified-Hausdorff-distance-based nearest neighbor (NN) classifier to achieve the dynamic hand gesture classification. The experimental results based on the measured data demonstrate that 1) the classification accuracy using dual-band radar sensors is higher than that using only single band radar sensor; 2) the classification accuracy can be improved as the percentage of training data is increased.","PeriodicalId":436201,"journal":{"name":"2018 19th International Radar Symposium (IRS)","volume":"182 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122577419","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}
The two-step weighted least squares (2WLS) is a classic method for time difference of arrival (TDOA) based source localization problem because of its computational efficiency. However, 2WLS method suffers from the sign ambiguity resulting from square root operation in the second WLS step. Although the sign of final solution can be roughly determined according to the estimate in the first WLS step, the localization accuracy will be degraded, since the position estimate in the first WLS step is not accurate enough. In this paper, an improved 2WLS method is proposed to circumvent this problem. The main strategy is to make proper transformation of the constraint relation, and keep only the linear items at the left side of the equation in the second WLS step. Simulation results show that the proposed method has better performance than the classic 2WLS algorithm, especially when the source is close to the reference receiver.
{"title":"Improved Two-Step Weighted Least Squares Algorithm for TDOA-Based Source Localization","authors":"Jinyang Chen, Yongsheng Zhao, Chuang Zhao, Yongjun Zhao","doi":"10.23919/IRS.2018.8448149","DOIUrl":"https://doi.org/10.23919/IRS.2018.8448149","url":null,"abstract":"The two-step weighted least squares (2WLS) is a classic method for time difference of arrival (TDOA) based source localization problem because of its computational efficiency. However, 2WLS method suffers from the sign ambiguity resulting from square root operation in the second WLS step. Although the sign of final solution can be roughly determined according to the estimate in the first WLS step, the localization accuracy will be degraded, since the position estimate in the first WLS step is not accurate enough. In this paper, an improved 2WLS method is proposed to circumvent this problem. The main strategy is to make proper transformation of the constraint relation, and keep only the linear items at the left side of the equation in the second WLS step. Simulation results show that the proposed method has better performance than the classic 2WLS algorithm, especially when the source is close to the reference receiver.","PeriodicalId":436201,"journal":{"name":"2018 19th International Radar Symposium (IRS)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121867773","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 : 2018-06-01DOI: 10.23919/IRS.2018.8448147
M. Dostovalov, R. Ermakov, T. Moussiniants
The work demonstrates the possibility of aircraft detection using Sentinel-1 synthetic aperture radar image series with 10 m resolution using change detection method. Sentinel-1 data can be used for detection of large aircraft as additional “indicators”, effective in combination with high resolution observations. The results of processing are demonstrated using a series of 15 SAR images acquired within the period from January to November 2017. Presented examples show that the results of aircraft detection in many cases clearly correspond to the number of targets that can be detected in the images manually. The probability of correct detection, estimated in real observation conditions for the most of images exceeded 0,8 and the final probability for all series was 0,76.
{"title":"Detection of Aircraft Using Sentinel-1 SAR Image Series","authors":"M. Dostovalov, R. Ermakov, T. Moussiniants","doi":"10.23919/IRS.2018.8448147","DOIUrl":"https://doi.org/10.23919/IRS.2018.8448147","url":null,"abstract":"The work demonstrates the possibility of aircraft detection using Sentinel-1 synthetic aperture radar image series with 10 m resolution using change detection method. Sentinel-1 data can be used for detection of large aircraft as additional “indicators”, effective in combination with high resolution observations. The results of processing are demonstrated using a series of 15 SAR images acquired within the period from January to November 2017. Presented examples show that the results of aircraft detection in many cases clearly correspond to the number of targets that can be detected in the images manually. The probability of correct detection, estimated in real observation conditions for the most of images exceeded 0,8 and the final probability for all series was 0,76.","PeriodicalId":436201,"journal":{"name":"2018 19th International Radar Symposium (IRS)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126133687","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 : 2018-06-01DOI: 10.23919/IRS.2018.8447953
Faran Awais Butt, M. A. Aslam, Muhammad Tayyab Zafar, I. Naqvi, U. Riaz
Multi-static and MIMO radars have opened up new horizons of research as they offer diversified degrees of freedom and arbitrary geometrical patterns. The biggest hurdle that such a system can face at implementation level is the synchronization of this distributed system. Use of GPS atomic clock, although quite accurate, is considered to be an expensive option for low cost distributed radar solutions. In this paper, we propose a simple, cost effective yet accurate scheme for synchronizing a long-range, low to medium PRF bi-static radar system using GSM technology. The concept can easily be extended to multi-static radar networks. The proposed system achieves a temporal resolution of tens of micro seconds and thus can be used in a large number of radar applications.
{"title":"Synchronization of Long-Range, Widely-Separated MIMO Radar Network using GSM Protocol","authors":"Faran Awais Butt, M. A. Aslam, Muhammad Tayyab Zafar, I. Naqvi, U. Riaz","doi":"10.23919/IRS.2018.8447953","DOIUrl":"https://doi.org/10.23919/IRS.2018.8447953","url":null,"abstract":"Multi-static and MIMO radars have opened up new horizons of research as they offer diversified degrees of freedom and arbitrary geometrical patterns. The biggest hurdle that such a system can face at implementation level is the synchronization of this distributed system. Use of GPS atomic clock, although quite accurate, is considered to be an expensive option for low cost distributed radar solutions. In this paper, we propose a simple, cost effective yet accurate scheme for synchronizing a long-range, low to medium PRF bi-static radar system using GSM technology. The concept can easily be extended to multi-static radar networks. The proposed system achieves a temporal resolution of tens of micro seconds and thus can be used in a large number of radar applications.","PeriodicalId":436201,"journal":{"name":"2018 19th International Radar Symposium (IRS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126117044","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 : 2018-06-01DOI: 10.23919/IRS.2018.8447918
Y. Averyanova, A. Rudiakova, I. Braun, F. Yanovsky
This paper considers potentials of radar polarimetry to register information about the drop vibration and drop shape deformation in the reflected signal and possibility to register this impact by selection of polarization of receiving antenna. In this paper, the calculation of the relation between the average signal value and the vibrations magnitude in decibels was made to demonstrate the possibility to fix the reflected electromagnetic wave energy variation caused by wind and wind related phenomena
{"title":"Simulations of Multi Polarization Measurements and Reflected Signal Magnitude Variations Caused by Turbulence","authors":"Y. Averyanova, A. Rudiakova, I. Braun, F. Yanovsky","doi":"10.23919/IRS.2018.8447918","DOIUrl":"https://doi.org/10.23919/IRS.2018.8447918","url":null,"abstract":"This paper considers potentials of radar polarimetry to register information about the drop vibration and drop shape deformation in the reflected signal and possibility to register this impact by selection of polarization of receiving antenna. In this paper, the calculation of the relation between the average signal value and the vibrations magnitude in decibels was made to demonstrate the possibility to fix the reflected electromagnetic wave energy variation caused by wind and wind related phenomena","PeriodicalId":436201,"journal":{"name":"2018 19th International Radar Symposium (IRS)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129624030","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 : 2018-06-01DOI: 10.23919/IRS.2018.8448138
S. Jang, Chang-Soo Ahn, Gyu-Churl Park, Taehyung Kim, Seonjoo Kim
This paper describes an airborne radar beam stabilization and clutter measurement result by flight trials using a cargo aircraft(C-130H). We installed the radar demonstrator on the ramp door in C-130H aircraft. Radar beam stabilization function was checked during the platform maneuvering. Ground clutter was measured in backward direction during flight trials. The measured data compared with the simulated results generated by the ground clutter model using the selected radar waveform. Through this case study, we validate that the beam stabilization function and ground clutter model is reasonable and a cargo aircraft can be used for further radar flight trials.
{"title":"A Case Study of the Beam Stabilization and Ground Clutter Measurement by a Cargo Aircraft Flight Trials","authors":"S. Jang, Chang-Soo Ahn, Gyu-Churl Park, Taehyung Kim, Seonjoo Kim","doi":"10.23919/IRS.2018.8448138","DOIUrl":"https://doi.org/10.23919/IRS.2018.8448138","url":null,"abstract":"This paper describes an airborne radar beam stabilization and clutter measurement result by flight trials using a cargo aircraft(C-130H). We installed the radar demonstrator on the ramp door in C-130H aircraft. Radar beam stabilization function was checked during the platform maneuvering. Ground clutter was measured in backward direction during flight trials. The measured data compared with the simulated results generated by the ground clutter model using the selected radar waveform. Through this case study, we validate that the beam stabilization function and ground clutter model is reasonable and a cargo aircraft can be used for further radar flight trials.","PeriodicalId":436201,"journal":{"name":"2018 19th International Radar Symposium (IRS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127860189","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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