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2017 18th International Radar Symposium (IRS)最新文献

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High resolution dual-channel SAR-system for airborne applications 用于机载的高分辨率双通道sar系统
2017 18th International Radar Symposium (IRS) Pub Date : 2017-06-28 DOI: 10.23919/IRS.2017.8008093
M. Caris, T. Brehm, S. Palm, S. Sieger, F. Klöppel, R. Sommer, D. Janssen, V. Port, S. Stanko
{"title":"High resolution dual-channel SAR-system for airborne applications","authors":"M. Caris, T. Brehm, S. Palm, S. Sieger, F. Klöppel, R. Sommer, D. Janssen, V. Port, S. Stanko","doi":"10.23919/IRS.2017.8008093","DOIUrl":"https://doi.org/10.23919/IRS.2017.8008093","url":null,"abstract":"The airborne monitoring of scenes using unmanned or small piloted aircrafts is becoming increasingly important. Several types of airborne sensors - in the electro-optical, infrared or millimeter wave spectrum - are available for the different platforms. Beside the all-weather suitability of the sensors, the deployment scenarios, often demand for the ability to look through dust clouds, smoke, or fog. The only sensor, which is capable to cope with such environmental restrictions and, at the same time, to deliver high-resolution images, is the synthetic aperture radar (SAR). In this paper, we present the extension of the well-established MIRANDA-35 SAR system with a second receiving channel for polarimetric and interferometric applications. The applied frontend upgrades and the configuration for airborne SAR with the MIRANDA system are described. Furthermore, we present the design of a newly constructed slotted waveguide antenna for cross-polarization. The first polarimetric measurement results conclude the paper and demonstrate the capabilities of the dual-channel Ka-band sensor.","PeriodicalId":430241,"journal":{"name":"2017 18th International Radar Symposium (IRS)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127289094","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
3D multiple input single output near field automotive synthetic aperture radar 三维多输入单输出近场汽车合成孔径雷达
2017 18th International Radar Symposium (IRS) Pub Date : 2017-06-28 DOI: 10.23919/IRS.2017.8008121
Aron Sommer, Tri Tan Ngo, J. Ostermann
{"title":"3D multiple input single output near field automotive synthetic aperture radar","authors":"Aron Sommer, Tri Tan Ngo, J. Ostermann","doi":"10.23919/IRS.2017.8008121","DOIUrl":"https://doi.org/10.23919/IRS.2017.8008121","url":null,"abstract":"Radar sensors play an important role in the technology field of autonomous driving. In contrast to optical cameras, they work reliable by night, mist, snow and fog. Recent radar sensors have problems in near-field scenarios. In this paper, we investigate how the technique of synthetic aperture radar (SAR) can be used to reconstruct the 3D near-field environment up to 30m with several physical radar sensors using the global backprojection algorithm. The main challenge applying SAR to an automotive 77 GHz radar sensor with 2 GHz bandwidth and a short sweep duration of 10 µs is to avoid azimuth aliasing, which means avoiding ghost targets. In the case of monostatic SAR, the sensors have to be placed 1mm next to each other, which is unrealistic in practice. By using multiple input single output (MISO) sensors arranged in a circular manner we increase this distance to 4 cm, which is now feasible in practice. This sensor arrangement enables applying SAR to near-field automotive applications.","PeriodicalId":430241,"journal":{"name":"2017 18th International Radar Symposium (IRS)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122673435","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
Automotive radar interference test 汽车雷达干扰试验
2017 18th International Radar Symposium (IRS) Pub Date : 2017-06-28 DOI: 10.23919/IRS.2017.8008119
Steffen Heuel
{"title":"Automotive radar interference test","authors":"Steffen Heuel","doi":"10.23919/IRS.2017.8008119","DOIUrl":"https://doi.org/10.23919/IRS.2017.8008119","url":null,"abstract":"Fully automated vehicles are currently under research and development and will become reality in the near future. Key enabling sensors in this area are automotive radars, which currently support driving comfort and crash prevention. These radars operate in the 24 GHz and 76–81 GHz bands as of today and occupy the spectrum heavily. Hence automotive radar sensors require immunity to interference of some other automotive radar sensors. This paper presents methods to verify interference mitigation techniques using very wide band arbitrary RF signals in high frequency mmWave domain. It shows measurements that the noise floor increases in between 10 dB to 25 dB depending on the interference signal level and waveform. Without interference cancellation objects with low radar cross sections, like pedestrians, would most likely go undetected.","PeriodicalId":430241,"journal":{"name":"2017 18th International Radar Symposium (IRS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128699490","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
Atmospheric pressure determination with help of TDOA method location 借助TDOA法定位大气压力测定
2017 18th International Radar Symposium (IRS) Pub Date : 2017-06-01 DOI: 10.23919/IRS.2017.8008174
Ladislav Gregor, J. Veselý, L. Dražan
{"title":"Atmospheric pressure determination with help of TDOA method location","authors":"Ladislav Gregor, J. Veselý, L. Dražan","doi":"10.23919/IRS.2017.8008174","DOIUrl":"https://doi.org/10.23919/IRS.2017.8008174","url":null,"abstract":"Main purpose of this paper is to outline options of atmospheric pressure determination with help of TDOA method location. The TDOA system uses the ASTERIX data format. There is the exploration of profitable data extraction from ASTERIX data format. Also the principle of atmospheric pressure determination is explained. As a results there are shown derived atmospheric pressure data and its accuracies.","PeriodicalId":430241,"journal":{"name":"2017 18th International Radar Symposium (IRS)","volume":"103 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121068370","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
Enhanced feature extraction for landmine detection using handheld ground penetrating radar (GPR) based on full wave inversion (FWI) 基于全波反演(FWI)的手持式探地雷达(GPR)增强特征提取
2017 18th International Radar Symposium (IRS) Pub Date : 2017-06-01 DOI: 10.23919/IRS.2017.8008194
S. Sule, K. Paulson
{"title":"Enhanced feature extraction for landmine detection using handheld ground penetrating radar (GPR) based on full wave inversion (FWI)","authors":"S. Sule, K. Paulson","doi":"10.23919/IRS.2017.8008194","DOIUrl":"https://doi.org/10.23919/IRS.2017.8008194","url":null,"abstract":"This paper reports the exploration of the potential of enhanced target classification through feature extraction for anti-personnel (AP) mine detection using handheld ground penetrating radar (GPR). Principal component analysis (PCA) using singular value decomposition (SVD) of the Jacobian matrix is used to determine the ability of a bistatic handheld GPR/metal detector system to detect the presence of air space or vacuum in an AP mine preceded by initial detection by the metal detector and successful full wave inversion (FWI). The results are promising and show that under the right conditions of accurate sub-surface parameter estimation through FWI and clutter mitigation, GPR can detect air space in a mine, treating it as a kind of ‘container’, and enable improved target classification for mine detection.","PeriodicalId":430241,"journal":{"name":"2017 18th International Radar Symposium (IRS)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124940281","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
A concept of multi-rate processing for passive radar 无源雷达多速率处理的概念
2017 18th International Radar Symposium (IRS) Pub Date : 2017-06-01 DOI: 10.23919/IRS.2017.8008147
Marcin Żywek, M. Malanowski, Grzegorz Krawczyk, Michal Szczepankiewicz, P. Samczyński
{"title":"A concept of multi-rate processing for passive radar","authors":"Marcin Żywek, M. Malanowski, Grzegorz Krawczyk, Michal Szczepankiewicz, P. Samczyński","doi":"10.23919/IRS.2017.8008147","DOIUrl":"https://doi.org/10.23919/IRS.2017.8008147","url":null,"abstract":"In the paper the concept of a passive radar that uses several processing chains working with different setup parameters is considered. In the presented concept, the same signals are divided into blocks of different lengths, and processed simultaneously. In such way higher signal-to-noise ratios can be achieved for non-maneuvering targets by using longer integration time, whereas highly maneuvering targets can still be detected using shorter integration time.","PeriodicalId":430241,"journal":{"name":"2017 18th International Radar Symposium (IRS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125155462","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 parameter estimation of vehicles GPS shadows by Forward scattering systems 基于前向散射系统的车辆GPS阴影实验参数估计
2017 18th International Radar Symposium (IRS) Pub Date : 2017-06-01 DOI: 10.23919/IRS.2017.8008216
C. Kabakchiev, I. Garvanov, V. Behar, D. Kabakchieva, K. Kabakchiev, K. Dimitrov, H. Rohling, K. Kulpa, A. Yarovoy
{"title":"Experimental parameter estimation of vehicles GPS shadows by Forward scattering systems","authors":"C. Kabakchiev, I. Garvanov, V. Behar, D. Kabakchieva, K. Kabakchiev, K. Dimitrov, H. Rohling, K. Kulpa, A. Yarovoy","doi":"10.23919/IRS.2017.8008216","DOIUrl":"https://doi.org/10.23919/IRS.2017.8008216","url":null,"abstract":"In this paper, we conduct an experimental study with the aim to obtain a large number of estimates of various parameters characterizing the GPS shadows created by three types of moving vehicles. The experimental cars have a similar size and therefore, the obtained estimates have similar values. From the results, it can be seen that the cars can be differentiated by means of their shadow parameters.","PeriodicalId":430241,"journal":{"name":"2017 18th International Radar Symposium (IRS)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125407574","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: 8
Compressive sensing techniques applied to multi-look ISAR images 压缩感知技术在多视ISAR图像中的应用
2017 18th International Radar Symposium (IRS) Pub Date : 2017-06-01 DOI: 10.23919/IRS.2017.8008109
J. Ender, R. Sommer
{"title":"Compressive sensing techniques applied to multi-look ISAR images","authors":"J. Ender, R. Sommer","doi":"10.23919/IRS.2017.8008109","DOIUrl":"https://doi.org/10.23919/IRS.2017.8008109","url":null,"abstract":"Classical ISAR imaging usually is based on the polar re-formatting algorithm making use of the fast Fourier transform. If the observed aspect angle change is large enough, several partial segments can be processed separately, the resulting partial images can be summed incoherently to a multi-look image with reduced noise and speckle level and exhibiting more details, since some parts of the objects can be seen only from certain aspect angles. In this paper we regard multi-look ISAR imaging based on compressive sensing techniques. We use data obtained with a turn table, which is the standard method to determine two dimensional scattering centre distributions of a target under controlled conditions. A special implementation will be discussed using compressive sensing in the range domain, in which the object reflectivity will be naturally sparse. The reconstructed reflectivity in range allows to extend virtually the bandwidth leading to an improved resolution. Polar re-formatting is applied in this algorithm to the extended bandwidth-data. Further, the migration of specular points over the viewing angle is analysed and serves as a model for block-sparse recovery. The processing is demonstrated at real turntable data obtained with the FMCW millimeter wave COBRA radar from Fraunhofer FHR.","PeriodicalId":430241,"journal":{"name":"2017 18th International Radar Symposium (IRS)","volume":"38 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122974508","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: 3
Broadband digital frontends as enabler for software defined Radar 宽带数字前端作为软件定义雷达的推动者
2017 18th International Radar Symposium (IRS) Pub Date : 2017-06-01 DOI: 10.23919/IRS.2017.8008084
R. Bil, M. Brandfass
{"title":"Broadband digital frontends as enabler for software defined Radar","authors":"R. Bil, M. Brandfass","doi":"10.23919/IRS.2017.8008084","DOIUrl":"https://doi.org/10.23919/IRS.2017.8008084","url":null,"abstract":"In this paper technical advances towards future broadband digital frontends are presented and discussed. Technical challenges on this path, such as ultra-wideband digital sampling, architectures for wideband frequency coverage, System on Chip technologies for digital beamforming, broadband antenna apertures including GaN / SiGe TR-Module technologies are addressed. Hensoldt's technological progress with respect to these challenges is shown. The operational benefits of future broadband digital frontends are outlined and even greater advantages in combining Radar, EW and Data Link capabilities with digital broadband AESAs are pointed out.","PeriodicalId":430241,"journal":{"name":"2017 18th International Radar Symposium (IRS)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117025929","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: 3
Theoretical and experimental investigations of microwave signatures for characterization of building structures 微波特征用于建筑结构表征的理论与实验研究
2017 18th International Radar Symposium (IRS) Pub Date : 2017-06-01 DOI: 10.23919/IRS.2017.8008089
A. Haas, M. Peichl, S. Dill
{"title":"Theoretical and experimental investigations of microwave signatures for characterization of building structures","authors":"A. Haas, M. Peichl, S. Dill","doi":"10.23919/IRS.2017.8008089","DOIUrl":"https://doi.org/10.23919/IRS.2017.8008089","url":null,"abstract":"In Germany nearly 64 percent of common housing stock was built before 1978 mainly without any insulation. Following the first and second oil crisis in 1973 and 1979 awareness for thermal insulation has grown and corresponding measures successively have been integrated into the building architecture over the next decades. As there exist almost no construction plans about wall structure of buildings for the time before 1979, it is difficult for building managers to identify and realize an adequate insulation for individual buildings. In an ongoing research project by German Aerospace Center (DLR) and University of Applied Sciences (FH) Aachen measurement techniques used for remote sensing, security research and concentrating solar power are tested and developed further to obtain methods that allow for a fast and accurate determination of physical building parameters. DLR - Microwaves and Radar Institute - now examines the possibility of using microwaves to determine material characteristics of building walls, so that efficient thermal insulation for existing non-insulated buildings can be realized. This paper is intended to provide an insight into the basic problem and some first investigations.","PeriodicalId":430241,"journal":{"name":"2017 18th International Radar Symposium (IRS)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128639815","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
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