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2015 IEEE Radar Conference最新文献

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Convex optimization for optimal PMEPR and mismatched filter design in OFDM radar OFDM雷达中最优PMEPR和失匹配滤波器设计的凸优化
2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411850
G. Lellouch, A. Mishra, M. Inggs
{"title":"Convex optimization for optimal PMEPR and mismatched filter design in OFDM radar","authors":"G. Lellouch, A. Mishra, M. Inggs","doi":"10.1109/RADARCONF.2015.7411850","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411850","url":null,"abstract":"In OFDM radar, two distinct processing techniques call for different sets of constraints for the OFDM pulse. On the one hand the variations of the time domain envelope must be minimized. On the other hand, not only this, but the sidelobe level of the compressed pulse shall also be minimized. While a number of techniques exist to address both problems separately or jointly, they were never proven to be optimal. In contrast, the recently developed convex optimization techniques guarantee the best solution for the particular problem at stake while involving short computation times. In this paper, we address the unrestricted problem of the so-called peak-to-mean envelope power ratio (PMEPR) optimization jointly with the design of optimal mismatched filters for the OFDM case. We demonstrate that our convex based method is able to outperform a number of state-of-the-art techniques.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"95 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134475174","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: 5
Bayesian change analysis for finding vehicle size targets in VHF foliage penetration SAR data 甚高频叶突SAR数据中车辆尺寸目标的贝叶斯变化分析
2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411936
H. Hellsten, Renato B. Machado
{"title":"Bayesian change analysis for finding vehicle size targets in VHF foliage penetration SAR data","authors":"H. Hellsten, Renato B. Machado","doi":"10.1109/RADARCONF.2015.7411936","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411936","url":null,"abstract":"A Bayesian change analysis detection scheme for VHF SAR data is presented. It is notably different from the conventional approach of tresholding target probability of detection and false alarm rate. The approach leads to target hypotheses, in which target nominees are attributed with a probability of being a target or equivalently of not being a false alarm. The precise method is iterative, substituting each hypothesis with a new one containing one further target. It stops when the probability of further targets decreases monotonically. In typical situations it peaks with a very high probability for a certain number of targets, which thus is the most likely distribution of targets given the image pair.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115525206","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
New algorithm for signal detection in passive FSR 无源FSR信号检测新算法
2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411883
M. Marra, A. De Luca, S. Hristov, L. Daniel, M. Gashinova, M. Cherniakov
{"title":"New algorithm for signal detection in passive FSR","authors":"M. Marra, A. De Luca, S. Hristov, L. Daniel, M. Gashinova, M. Cherniakov","doi":"10.1109/RADARCONF.2015.7411883","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411883","url":null,"abstract":"This paper concerns with the passive forward scatter radar (FSR). An algorithm to extract the Doppler signature of a target is presented for the first time. It allows removal of the background modulation of the transmitted signal, so that the signature can be extracted within a narrow band. Receiver architecture, corresponding to the proposed algorithm experimental set-up and experimental results are shown, where a DVB-T signal has been used to test the passive FSR algorithm. The performance of the proposed algorithm is analyzed at this initial stage of the research.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114400733","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: 10
The generalized imaging processing for squinted FMCW SAR 斜视FMCW SAR的广义成像处理
2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411909
Xiangyang Li, Gao-wei Jia, Wenge Chang, C. Gu
{"title":"The generalized imaging processing for squinted FMCW SAR","authors":"Xiangyang Li, Gao-wei Jia, Wenge Chang, C. Gu","doi":"10.1109/RADARCONF.2015.7411909","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411909","url":null,"abstract":"A generalized signal model for squint frequency modulated continuous wave (FMCW) synthetic aperture radar (SAR) is established in this paper, based on which it is convenient to investigate the properties of squint FMCW SAR. Correspondingly, the modified frequency scaling (FS) algorithm for both side-look and squint FMCW SAR is proposed with detailed procedures, it has the advantages of reducing the frequency range of FS factor and is possible to adjust the layout of SAR images. Simulated tests and theoretical analysis proved the proposed signal model is correct and the proposed algorithm is available.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114664345","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
L-band and P-band studies of vegetation at JPL JPL植被的l波段和p波段研究
2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411937
S. Hensley, J. V. Van Zyl, M. Lavalle, M. Neumann, T. Michel, R. Muellerschoen, N. Pinto, M. Simard, M. Moghaddam
{"title":"L-band and P-band studies of vegetation at JPL","authors":"S. Hensley, J. V. Van Zyl, M. Lavalle, M. Neumann, T. Michel, R. Muellerschoen, N. Pinto, M. Simard, M. Moghaddam","doi":"10.1109/RADARCONF.2015.7411937","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411937","url":null,"abstract":"Longer wavelength radar signals are known to penetrate deeper into foliage. L-Band and P-band radars have been used extensively by the remote sensing community for vegetation studies. Radar interferometry, in particular polarimetric radar interferometry has been shown to be able to estimate vegetation structure parameters, for example vegetation height, to meter level accuracy with suitable imaging geometries. Several proposed mission including the ESA BIOMASS and NASA NISAR are planned to operate at these higher frequencies and to estimate various biophysical vegetation parameters. This paper will present some results of polarimetric-interferometric studies of temporal and tropical forests using airborne L-band and P-band radar data collected by the UAVSAR and AIRMOSS radars and comparing them to in situ measurements. These will be used to inform the ability to extract vegetation information for these spaceborne missions.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122126279","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: 7
MIMO for conformal array radar: More than an option 用于共形阵列雷达的MIMO:不仅仅是一种选择
2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411906
Shenghua Zhou, Huikai Zang, Jianlai Wang, Hongwei Liu, Leilei Xu, Hongtao Su
{"title":"MIMO for conformal array radar: More than an option","authors":"Shenghua Zhou, Huikai Zang, Jianlai Wang, Hongwei Liu, Leilei Xu, Hongtao Su","doi":"10.1109/RADARCONF.2015.7411906","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411906","url":null,"abstract":"Conformal array radar can make full use of the appearance of the carrier like an aircraft to achieve a larger aperture. However, as the elements therein may often have complicated beam patterns, the phased-array radar mode may be difficult in forming a desirable transmit beampattern. In this paper, we present transmit waveform design criteria for both the phased-array radar mode and the Multiple-Input Multiple-Output (MIMO) radar mode, with numerical results to indicate that the MIMO radar mode can match a desirable transmit beampattern better for a conformal array radar.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124849483","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: 5
Characterization of X-band radar sea-clutter in a limited fetch condition from low to high grazing angles 低至高掠角条件下x波段雷达海杂波特性研究
2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411864
T. Johnsen
{"title":"Characterization of X-band radar sea-clutter in a limited fetch condition from low to high grazing angles","authors":"T. Johnsen","doi":"10.1109/RADARCONF.2015.7411864","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411864","url":null,"abstract":"X-band radar sea-clutter data covering grazing angles from 3 to 56 degrees and 360 degrees in azimuth from an immature sea conditions with about 20 km fetch have been characterized. Clutter mean backscatter intensity and k-distribution shape parameter dependencies on geometry have been addressed. Doppler spectrum widths and behavior of Doppler spectrum in different sea states shows different behavior. A high resolution measurement in grazing angle covering a broad range presents an almost continuum of data points that fit very well with modeled mean backscatter curves.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128211557","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
MIMO beamforming using quasi-orthogonal ultrawideband-impulse waveforms 准正交超宽带脉冲波形的MIMO波束形成
2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411858
M. Hussain
{"title":"MIMO beamforming using quasi-orthogonal ultrawideband-impulse waveforms","authors":"M. Hussain","doi":"10.1109/RADARCONF.2015.7411858","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411858","url":null,"abstract":"In this paper, the principles of multiple-input-multiple-output (MIMO) array beamforming based on quasi-orthogonal ultrawideband-impulse (UWBI) signals and the conventional narrowband-sinusoidal (NBS) signals are described in the time domain. Mathematical models of quasi-orthogonal UWBI signals and NBS signals modulated according to the Mary phase-shift-keying (PSK) scheme are first presented. The models are then used to derive and plot the average-power pattern of a coherent MIMO beamforming system typically considered for enhancing the resolution performance of an imaging radar. Computer plots of the MIMO beam patterns obtained for the quasi-orthogonal UWBI-PSK and NBS-PSK signals clearly demonstrate that the angular-resolution performance of MIMO beamforming based on UWBI-PSK signals is superior to that based on NBS-PSK signals. Improvement in resolution angle and peak-sidelobe level can be achieved by a trade-off between the design parameters of the UWBI-PSK signals and the MIMO array.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130625850","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: 5
Numerical and experimental radar cross section analysis of the quadrocopter DJI Phantom 2 大疆幻影2四旋翼机雷达截面数值与实验分析
2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411928
A. Schroder, M. Renker, U. Aulenbacher, A. Murk, U. Boniger, R. Oechslin, P. Wellig
{"title":"Numerical and experimental radar cross section analysis of the quadrocopter DJI Phantom 2","authors":"A. Schroder, M. Renker, U. Aulenbacher, A. Murk, U. Boniger, R. Oechslin, P. Wellig","doi":"10.1109/RADARCONF.2015.7411928","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411928","url":null,"abstract":"This paper presents a numerical and experimental scattering analysis of the quadrocopter DJI Phantom 2 at 10 GHz. Major goal of the study is to evaluate the suitability of simplified quadrocopter models for numerical radar cross section (RCS) investigations. Mono- and bistatic RCS results are obtained by the finite element method and the method of moments. As structural parts of the quadrocopter are made of plastic and electronic components consist of metal, focus is put on the numerical modeling of mixed dielectric-metallic objects. Thereby, different materials and model resolutions are examined and their influence on the scattered field is analyzed. Moreover, we investigate the impact of approximated excitations as well as object misalignments in order to quantify potential error sources. Numerical results are compared with measurements which have been carried out in a anechoic chamber. Deviations to measurements are discussed and remedies are proposed.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125717641","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: 42
Coherent radar performance in sea clutter 海杂波条件下相干雷达性能
2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411863
S. Watts, L. Rosenberg
{"title":"Coherent radar performance in sea clutter","authors":"S. Watts, L. Rosenberg","doi":"10.1109/RADARCONF.2015.7411863","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411863","url":null,"abstract":"Coherent detectors are typically designed on the assumption that the covariance matrix or power spectrum of the clutter in a cell-under-test can be estimated accurately from surrounding data. However, the time-varying and range-varying nature of sea clutter Doppler spectra means this may be difficult to achieve. The performance of coherent detectors working in both the frequency domain and time domain is assessed using measured data from the Australian Ingara X-band airborne radar. To further explore the sensitivity of the detection performance, an evolving Doppler spectrum model is then used to simulate sea-clutter. The detection performance is first directly compared with the measured data before being extrapolated to other clutter conditions.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"32 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114127466","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: 7
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