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A Full-Array-Grid-Compatible Wideband Tx/Rx Multipack using Multifunctional Chips on GaN and SiGe 基于GaN和SiGe的多功能芯片的全阵列-网格兼容宽带Tx/Rx Multipack
2018 15th European Radar Conference (EuRAD) Pub Date : 2018-09-01 DOI: 10.23919/eumc.2018.8541723
R. Rieger, A. Klaassen, P. Schuh, M. Oppermann
{"title":"A Full-Array-Grid-Compatible Wideband Tx/Rx Multipack using Multifunctional Chips on GaN and SiGe","authors":"R. Rieger, A. Klaassen, P. Schuh, M. Oppermann","doi":"10.23919/eumc.2018.8541723","DOIUrl":"https://doi.org/10.23919/eumc.2018.8541723","url":null,"abstract":"A next generation of RF sensor modules for multifunction AESA systems shall provide a combination of different operating modes, e.g. Radar, EW and Communications/Datalink within the same antenna frontend. Typical operating frequencies covering C-Band, X-Band and Ku-Band will require a bandwidth of > 10 GHz, here. As for the realisation of modern active electronically steered antennas (AESA) the Transmit/Receive (Tx/Rx) Modules have to match with geometry constraints a major challenge for these future multifunction RF sensor modules is given by the half-wavelength grid demand derived from the highest frequency with accordant need for grating lobe free Field of View. One key to overcome this geometry demand can be the reduction of the total MMIC chip area with a \"high-level\" integration of single chip based RF functions into new multifunctional MMICs realised in SiGe- and GaN-technology. Further channel width reduction can be achieved by realising Tx/Rx multipacks instead of single-channel Tx/Rx Modules.","PeriodicalId":171460,"journal":{"name":"2018 15th European Radar Conference (EuRAD)","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121194924","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
Joint Super-Resolution and Array Interpolation for MIMO Radar Virtual Arrays MIMO雷达虚拟阵列的联合超分辨率和阵列插值
2018 15th European Radar Conference (EuRAD) Pub Date : 2018-09-01 DOI: 10.23919/EURAD.2018.8546547
Maurice Hott, J. Mietzner, S. Lutz, M. Bockmair, P. Hoeher
{"title":"Joint Super-Resolution and Array Interpolation for MIMO Radar Virtual Arrays","authors":"Maurice Hott, J. Mietzner, S. Lutz, M. Bockmair, P. Hoeher","doi":"10.23919/EURAD.2018.8546547","DOIUrl":"https://doi.org/10.23919/EURAD.2018.8546547","url":null,"abstract":"Multiple-input multiple-output (MIMO) radars offer increased angular resolutions compared to conventional radars, based on a virtual enlargement of the physical antenna array by means of digital signal processing. In this paper, we show that the angular resolution of MIMO radars can be further increased by combining MIMO processing with an array extrapolation method based on Burg’s algorithm. Moreover, we demonstrate that Burg’s algorithm is also able to interpolate missing virtual antenna elements caused by failure of physical receive antennas. Measurements conducted with Hensoldt’s compact 3D MIMO radar demonstrator serve as a basis to validate our findings.","PeriodicalId":171460,"journal":{"name":"2018 15th European Radar Conference (EuRAD)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126535573","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: 6
15 Gbps Wireless Link Using W-band Resonant Tunnelling Diode Transmitter 使用w波段谐振隧道二极管发射机的15gbps无线链路
2018 15th European Radar Conference (EuRAD) Pub Date : 2018-09-01 DOI: 10.23919/EURAD.2018.8546598)
Jue Wang, A. Al-Khalidi, Razvan Morariu, Afesomeh Ofiare, Liquan Wang, E. Wasige
{"title":"15 Gbps Wireless Link Using W-band Resonant Tunnelling Diode Transmitter","authors":"Jue Wang, A. Al-Khalidi, Razvan Morariu, Afesomeh Ofiare, Liquan Wang, E. Wasige","doi":"10.23919/EURAD.2018.8546598)","DOIUrl":"https://doi.org/10.23919/EURAD.2018.8546598)","url":null,"abstract":"A 15 Gbps wireless link over 50 cm distance is reported in this paper. A high power and low phase noise resonant tunneling diode (RTD) oscillator is employed as the transmitter. The fundamental carrier frequency is 84 GHz and the maximum output power is 2 mW without any power amplifier. The measured phase noise value was -79 dBc/Hz at 100 KHz and -96 dBc/Hz at 1 MHz offset. The modulation scheme used was amplitude shift keying (ASK). The 15 Gbps data link showed a correctable bit error rate (BER) of 4.1×10-3, while lower data rates of 10 Gbps and 5 Gbps had BER of 3.6×10-4 and 1.0×10-6, respectively.","PeriodicalId":171460,"journal":{"name":"2018 15th European Radar Conference (EuRAD)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125752416","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-destructive Crack Detection and Classification for Waterproof-coated Concrete Surfaces by Millimeter-wave Imaging 基于毫米波成像的防水涂层混凝土表面无损裂缝检测与分类
2018 15th European Radar Conference (EuRAD) Pub Date : 2018-09-01 DOI: 10.23919/EURAD.2018.8546602
A. Hirata, Makoto Nakasizuka, Keiichi Sudo
{"title":"Non-destructive Crack Detection and Classification for Waterproof-coated Concrete Surfaces by Millimeter-wave Imaging","authors":"A. Hirata, Makoto Nakasizuka, Keiichi Sudo","doi":"10.23919/EURAD.2018.8546602","DOIUrl":"https://doi.org/10.23919/EURAD.2018.8546602","url":null,"abstract":"This paper presents non-destructive millimeter-wave (MMW) imaging of sub-millimeter wide cracks on concrete surface that are covered by waterproof coating. Measurement of near-field scattering at cracks enables the detection of 0.3-mm-wide cracks by using 76.5-GHz MMW signal whose wavelength is about 3.9 mm. However, the roughness of the waterproof coating also causes near-field scattering, which makes it difficult to identify the cracks and surface roughness of waterproof coating. In order to increase the accuracy of crack detection, we simulated the reflected MMW signals at concrete cracks and surface roughness of waterproof coating, and applied a learning based classifier to these simulation results in order to classify concrete cracks and surface roughness of waterproof coating in the MMW images, and the classification accuracy of 97.5 % was achieved.","PeriodicalId":171460,"journal":{"name":"2018 15th European Radar Conference (EuRAD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129384525","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 2D Method For Acquiring The Radiation Pattern Of Two-Identical Vivaldi Antennas By Using A Stepped-Frequency Continue Wave (SFCW) Radar And A Rotation Stage 利用步进频率连续波雷达和旋转台获取两根相同维瓦尔第天线辐射方向图的二维方法
2018 15th European Radar Conference (EuRAD) Pub Date : 2018-09-01 DOI: 10.23919/eumc.2018.8541571
J. Solano, V. Ortega, R. Silla, W. Schröder, L. Schüssele
{"title":"A 2D Method For Acquiring The Radiation Pattern Of Two-Identical Vivaldi Antennas By Using A Stepped-Frequency Continue Wave (SFCW) Radar And A Rotation Stage","authors":"J. Solano, V. Ortega, R. Silla, W. Schröder, L. Schüssele","doi":"10.23919/eumc.2018.8541571","DOIUrl":"https://doi.org/10.23919/eumc.2018.8541571","url":null,"abstract":"A simple measuring method for acquiring the radiation pattern of an ultra-wide band Vivaldi antenna is presented. The measuring is performed by combining two identical Vivaldi antennas and some of the intrinsic properties of a stepped-frequency continue wave radar (SFCW radar) in the range from 1.0 GHz to 6.0 GHz. A stepper-motor provided the azimuthal rotation for one of the antennas from 0° to 360°. The tests have been performed within the conventional environment (laboratory / office) without using an anechoic chamber or absorbing materials. Special measuring devices have not been used either. This method has been tested with different pairs of Vivaldi antennas and it can be also used for different ones (with little or no change in the system), as long as their operational bandwidth is within the frequency range of the SFCW radar.","PeriodicalId":171460,"journal":{"name":"2018 15th European Radar Conference (EuRAD)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114956225","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
Kernel Extended Local Tangent Space Alignment for SAR Image Classification 核扩展局部切线空间对准SAR图像分类
2018 15th European Radar Conference (EuRAD) Pub Date : 2018-09-01 DOI: 10.23919/EURAD.2018.8546567
Xue-lian Yu
{"title":"Kernel Extended Local Tangent Space Alignment for SAR Image Classification","authors":"Xue-lian Yu","doi":"10.23919/EURAD.2018.8546567","DOIUrl":"https://doi.org/10.23919/EURAD.2018.8546567","url":null,"abstract":"This study proposes a novel local tangent space alignment (LTSA) variant, kernel extended (KE)-LTSA for synthetic aperture radar (SAR) image classification. It attempts on one hand to extract local geometric structures embedded in local neighbourhoods and on the other hand to maximize global interclass separability characterized by the overall distances among different classes. Moreover, it is formulated with kernel technique to obtain better performance than linear counterparts. Experimental results on the MSTAR database demonstrate that the proposed method can significantly improve the classification performance. Results also indicate the robustness when taking into account target variability and neighbourhood size.","PeriodicalId":171460,"journal":{"name":"2018 15th European Radar Conference (EuRAD)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117242830","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
Comparison of DoA Algorithms for MIMO OFDM Radar MIMO OFDM雷达DoA算法的比较
2018 15th European Radar Conference (EuRAD) Pub Date : 2018-09-01 DOI: 10.23919/EURAD.2018.8546582
Jéssica B. Sanson, A. Gameiro, D. Castanheira, P. Monteiro
{"title":"Comparison of DoA Algorithms for MIMO OFDM Radar","authors":"Jéssica B. Sanson, A. Gameiro, D. Castanheira, P. Monteiro","doi":"10.23919/EURAD.2018.8546582","DOIUrl":"https://doi.org/10.23919/EURAD.2018.8546582","url":null,"abstract":"This paper presents results for the determination of the direction of arrival (DoA) problem for a MIMO OFDM radar system using some of the most popular techniques: Multiple Signal Classification (MUSIC), Estimation of Signal Parameters via Rotational Invariance Techniques (ESPRIT), Minimum Norm (Min-Norm), Minimum Variance Distortionless Response (MVDR). The performance of the algorithms is evaluated using two different metrics, namely the performance achievable in terms of resolution and the probability of target distinction, since, for example, in automotive systems, not only the resolution but also the correct distinction of the number of targets can be crucial. The results presented in the paper show that the Min-Norm algorithm is a better option when used for applications that require reliable distinction of targets.","PeriodicalId":171460,"journal":{"name":"2018 15th European Radar Conference (EuRAD)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129910448","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: 12
Interpolation of Missing Antenna Measurements or RCS Data Using the Matrix Pencil Method 用矩阵铅笔法插值缺失的天线测量或RCS数据
2018 15th European Radar Conference (EuRAD) Pub Date : 2018-09-01 DOI: 10.23919/EUMC.2018.8541799
Nicolas F. Reginelli, T. Sarkar, M. Salazar-Palma
{"title":"Interpolation of Missing Antenna Measurements or RCS Data Using the Matrix Pencil Method","authors":"Nicolas F. Reginelli, T. Sarkar, M. Salazar-Palma","doi":"10.23919/EUMC.2018.8541799","DOIUrl":"https://doi.org/10.23919/EUMC.2018.8541799","url":null,"abstract":"When measuring the near-field of an antenna, often there are gaps in the measured data where the radiated fields are too low in magnitude to be measured or the measurement probe can′t physically reach. Similarly in the measurement of RCS data such gaps can also be observed due to various physical limitations. To address this problem in the measurement of the field data, the antenna characteristic is measured over a certain elevation range, theta, up to the point where measurement becomes difficult or inaccurate. The gap in the data is then approximated using the matrix pencil method. By applying the matrix pencil method, the data is interpolated or extrapolated using estimated residues and poles of an exponential signal model. The Total Least Squares (TLS) implementation of the Singular Value Decomposition (SVD) is used to obtain the residues and poles from the data. Once these parameters are obtained, the near-field can be estimated by a sum of complex exponentials. The far-field is obtained by using a spherical near to far-field transformation. A numerical example is provided to show the applicability of the matrix pencil method in interpolating a gap in antenna measurement data. Similar methodology can be applied to the RCS data.","PeriodicalId":171460,"journal":{"name":"2018 15th European Radar Conference (EuRAD)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129557222","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
Analog Beamforming based on Fourier Rotman Lens for Multibeam Applications 基于傅立叶罗特曼透镜的多波束模拟波束形成
2018 15th European Radar Conference (EuRAD) Pub Date : 2018-09-01 DOI: 10.23919/eumc.2018.8541739
P. Turalchuk, I. Munina, A. Shitvov
{"title":"Analog Beamforming based on Fourier Rotman Lens for Multibeam Applications","authors":"P. Turalchuk, I. Munina, A. Shitvov","doi":"10.23919/eumc.2018.8541739","DOIUrl":"https://doi.org/10.23919/eumc.2018.8541739","url":null,"abstract":"Spatial division represents a popular approach to increasing capacity in modern wireless networks. This paper presents a study of a simplified beamforming network based on a Fourier transform network with the number of output ports lower than the number of the elements in the antenna array. It is shown that connecting the output ports of Fourier transform network via power dividers to several array elements in phase, thus implementing a nearest-neighbor phase interpolation, preserves the gain and width of the beams in a narrow scanning sector. Therefore, in applications where few orthogonal beams are required to span a narrow spatial sector, the proposed approach can offer reduction of the hardware complexity. The simulated radiation patterns for a phase interpolation Fourier beamforming network are demonstrated. The antenna radiation patterns have been measured, using a Fourier Rotman lens with 2-way Wilkinson power dividers, which confirmed the simulated trends.","PeriodicalId":171460,"journal":{"name":"2018 15th European Radar Conference (EuRAD)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130837529","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
Experimental Demonstration of a Software-Defined-Radio Adaptive Beamformer 软件定义无线电自适应波束形成器的实验验证
2018 15th European Radar Conference (EuRAD) Pub Date : 2018-09-01 DOI: 10.23919/eumc.2018.8541750
Daniel Gaydos, P. Nayeri, R. Haupt
{"title":"Experimental Demonstration of a Software-Defined-Radio Adaptive Beamformer","authors":"Daniel Gaydos, P. Nayeri, R. Haupt","doi":"10.23919/eumc.2018.8541750","DOIUrl":"https://doi.org/10.23919/eumc.2018.8541750","url":null,"abstract":"Digital beamforming (DBF) is the platform for smart antenna technology. Adaptive algorithms coupled with these arrays enable automatic rejection of interference and can maximize the communication throughput in any dynamic environment. Hardware implementation is very costly. Here we propose an implementation of DBF arrays using software defined radios (SDRs). The SDR platform is a versatile, low cost solution to DBF and at the same time provides a practical testbed for rapid testing of different beamforming algorithms. We present experimental results for DBF using the particle swarm optimization search algorithm and a four-element SDR array and demonstrate the adaptive capabilities of this proposed technology.","PeriodicalId":171460,"journal":{"name":"2018 15th European Radar Conference (EuRAD)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129214287","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
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