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Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)最新文献

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A spectral approach to image-enhanced moving target radar detection 图像增强运动目标雷达探测的光谱方法
Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922947
R. Bonneau
{"title":"A spectral approach to image-enhanced moving target radar detection","authors":"R. Bonneau","doi":"10.1109/NRC.2001.922947","DOIUrl":"https://doi.org/10.1109/NRC.2001.922947","url":null,"abstract":"A difficult problem with ground moving target radar (GMTI) detection is how to consistently track targets moving through non-homogeneous regions of clutter such as forest and urban boundaries. Although attempts have been made to mitigate this detection problem using terrain mapping data, such data does not give current clutter information due to change in vegetation, roads, buildings, and seasonal variation. We propose to use synthetic aperture radar (SAR) imagery to enhance the detection performance of GMTI radar. We use a multiresolution Markov model to represent both target and background clutter. This multiresolution structure allows us to accurately match GMTI clutter with the geographically registered SAR imagery for consistent moving target detection through clutter boundary areas.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126972410","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
Bistatic reflectivity measurements at X, Ku, Ka and W-band frequencies X、Ku、Ka和w波段双基地反射率测量
Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.923013
B.L. Matkin, J. Mullins, T.J. Ferster, P. Vanderford
{"title":"Bistatic reflectivity measurements at X, Ku, Ka and W-band frequencies","authors":"B.L. Matkin, J. Mullins, T.J. Ferster, P. Vanderford","doi":"10.1109/NRC.2001.923013","DOIUrl":"https://doi.org/10.1109/NRC.2001.923013","url":null,"abstract":"Data that realistically represents the phenomenology of bistatic reflectivity is essential to the design of radar systems intended to sense land based targets and low flying aircraft. A large database exists describing the response of X-band monostatic reflectivity, and limited data is available for X-band bistatic reflectivity. However, there is little data in the literature describing bistatic reflectivity at Ku-band or at millimeter wave bands. Radar designers often resort to either scaling, or using directly, the bistatic reflectivity of X-band to model this environment at the other frequencies. A need exists to further characterize clutter phenomenology in order to design and project the performance of current and future systems. This paper provides an overview of X, Ku, Ka and W-Band bistatic measurements made at the Research Development and Engineering Center at Redstone Arsenal. The data collection includes both on-axis (zero degrees) and off-axis (10 and 30 degrees) measurements of the bistatic reflectivity response. The radar instrumentation design for the data collection is briefly described. A summary of the reflectivity results from smooth sand terrain is presented, along with preliminary modeling and statistical analysis. This work has application to tactical missile systems that must complete their engagements at low altitudes in a clutter environment.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131331808","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
Maximum likelihood angle extractor for two closely spaced targets 两个近距离目标的最大似然角提取器
Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.923003
A. Sinha, T. Kirubarajan, Y. Bar-Shalom
{"title":"Maximum likelihood angle extractor for two closely spaced targets","authors":"A. Sinha, T. Kirubarajan, Y. Bar-Shalom","doi":"10.1109/NRC.2001.923003","DOIUrl":"https://doi.org/10.1109/NRC.2001.923003","url":null,"abstract":"In a scenario of closely spaced targets special attention has to be paid to radar signal processing. We present an advanced processing technique, which uses the maximum likelihood (ML) criterion to extract from a monopulse radar separate angle measurements for unresolved targets. This processing results in a significant improvement, in terms of measurement error standard deviations, over angle estimators using the monopulse ratio. Algorithms are developed for Swerling III models of radar cross section (RCS) fluctuations. The accuracy of the results is compared to the Cramer Rao lower bound (CRLB) and also to the monopulse ratio technique. A novel technique to detect the presence of two unresolved targets is also discussed. The performance of the ML estimator was evaluated in a benchmark scenario of closely spaced targets - closer than half power beamwidth of a monopulse radar.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131334779","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: 72
Clutter tuning for bistatic clutter control 用于双基地杂波控制的杂波调谐
Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922951
M. J. Callahan
{"title":"Clutter tuning for bistatic clutter control","authors":"M. J. Callahan","doi":"10.1109/NRC.2001.922951","DOIUrl":"https://doi.org/10.1109/NRC.2001.922951","url":null,"abstract":"A radar modeling and simulation tool known as RLSTAP is used to model a bistatic clutter tuning scenario. The transmit system and the receive system \"circle\" the ground patch where the target lies in opposite senses so the Doppler shift due to the motion of the transmit (Tx) system is cancelled by an equal and opposite Doppler shift due to the motion of the receive (Rx) system. Key results are presented for this case, as well as for various imperfect clutter tuning cases and a monostatic case.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123016544","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
Digitization requirements for digital radar arrays 数字雷达阵列的数字化要求
Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922971
M. Zatman
{"title":"Digitization requirements for digital radar arrays","authors":"M. Zatman","doi":"10.1109/NRC.2001.922971","DOIUrl":"https://doi.org/10.1109/NRC.2001.922971","url":null,"abstract":"As the increasing digitization of radars progresses towards the antenna, this paper explores how digital the antenna of a phased-array radar must be in order to meet particular performance requirements. This paper addresses the often asked questions \"how many digital subarrays are needed\" and \"is element-level digitization required\"?.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134480391","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: 14
Target-to-clutter contrast enhancement using radar Doppler polarimetry 用雷达多普勒偏振法增强目标与杂波的对比
Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922999
D. Moisseev, C. Unal, H. Russchenberg, L. Ligthart
{"title":"Target-to-clutter contrast enhancement using radar Doppler polarimetry","authors":"D. Moisseev, C. Unal, H. Russchenberg, L. Ligthart","doi":"10.1109/NRC.2001.922999","DOIUrl":"https://doi.org/10.1109/NRC.2001.922999","url":null,"abstract":"The connection between Doppler and polarimetric characteristics of targets is studied. It is shown that the Doppler polarimetric formalism provides more complete radar object description. These conclusions are supported by the model of simple compound object as well as by the radar observations of ground clutter. It is also shown that the clutter suppression which is based on Doppler polarimetric object description gives better contrast enhancement than the polarimetric optimization techniques.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123619160","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
Adaptive minimax robust M-beamforming for multiple moving sources and impulse noise 多运动源和脉冲噪声的自适应极大极小稳健m波束形成
Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922981
V. Katkovnik, Yong-Hoon Kim
{"title":"Adaptive minimax robust M-beamforming for multiple moving sources and impulse noise","authors":"V. Katkovnik, Yong-Hoon Kim","doi":"10.1109/NRC.2001.922981","DOIUrl":"https://doi.org/10.1109/NRC.2001.922981","url":null,"abstract":"The windowed multiple source M-beamforming and M-estimates of the direction-of-arrival (DOA) are developed for source visualization and nonparametric high-resolution tracking of rapidly moving sources. These M-beamforming and M-estimates are robust with respect to impulse random errors having a unknown heavy-tailed distribution. The beamforming and estimates are defined by minimizing a nonquadratic residual loss function derived from the Huber minimax robust estimation theory. Based on the linear local polynomial approximation (LPA) of DOA the method gives estimates of instantaneous values of the directions as well as their first derivatives. Marginal beamformers are proposed for estimation and moving source visualization in two-dimensional space /spl theta/-/spl theta/. These marginal beamformers are able to localize and track every source individually nulling signals from all other moving sources. Recursive implementation of estimation algorithms are developed.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128456626","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
Fast converging robust adaptive arrays 快速收敛鲁棒自适应阵列
Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922980
M. Picciolo, K. Gerlach
{"title":"Fast converging robust adaptive arrays","authors":"M. Picciolo, K. Gerlach","doi":"10.1109/NRC.2001.922980","DOIUrl":"https://doi.org/10.1109/NRC.2001.922980","url":null,"abstract":"A pseudo-median canceller is introduced as the canonical processor of a robust adaptive array method which significantly reduces the deleterious effects of non-Gaussian, real-world noise and interference (outliers) on typical array performance metrics such as (normalized) output noise power residue and signal-to-interference-plus-noise ratio (SINR). In addition, the proposed structure offers natural protection against signal cancellation, or equivalently, against an increase in the output noise power residue, when weight-training data contains desired signal components. The convergence rate is shown to be commensurate with sample matrix inversion (SMR) methods for Gaussian noise and interference, and convergence is essentially unaffected when outliers are added to the Gaussian weight-training data, while non-robust SMI methods slow significantly under the same circumstances.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131066771","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
Development of a complete radar system model 开发一个完整的雷达系统模型
Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922948
I. Scott
{"title":"Development of a complete radar system model","authors":"I. Scott","doi":"10.1109/NRC.2001.922948","DOIUrl":"https://doi.org/10.1109/NRC.2001.922948","url":null,"abstract":"This paper describes an approach to modelling synthetic aperture radar (SAR) and ground moving target identification (GMTI) modes that is applicable to both monostatic and bistatic operation. We describe an extensible method for modelling large complex radar systems that can be used to model platform and target motion, analogue and digital electronic components and complex signal processing algorithms. The key to this approach is a common data file format that allows the user to exchange simulated datasets for real flight trials data or combine the two without any recompilation of the modelling.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"120 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126311399","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
Wide-angle ISAR passive imaging using smoothed pseudo Wigner-Ville distribution 采用平滑伪Wigner-Ville分布的ISAR无源广角成像
Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.923006
Yong Wu, D. Munson
{"title":"Wide-angle ISAR passive imaging using smoothed pseudo Wigner-Ville distribution","authors":"Yong Wu, D. Munson","doi":"10.1109/NRC.2001.923006","DOIUrl":"https://doi.org/10.1109/NRC.2001.923006","url":null,"abstract":"We are investigating passive radar imaging of aircraft using reflected TV signals. UHF-band ISAR imaging requires wide-angle data to produce good cross-range resolution. We show that direct Fourier reconstruction (DFR) causes degradation of the reconstructed image due to aspect-dependent scattering. We find that a smoothed pseudo Wigner-Ville distribution (SPWVD) applied in the cross-range direction in place of the Fourier transform can generate a sequence of images, which shows the target reflectivity as a function of aspect angle. Compared to DFR results, these images have higher cross-range resolution. A final image can be synthesized from these images and used for target recognition. XPATCH is used to simulate monostatic data from an aircraft. The proposed SPWVD-based imaging method produces a useful image of the aircraft from this data.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122313024","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: 31
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