Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)最新文献_第8页

Ambiguity analysis for pulse compression radar using Gold code sequences Gold码序列脉冲压缩雷达的模糊分析

Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922961

T. Hale, M. Temple, B. L. Crossley

引用次数: 14

Ship detection in SAR images: a segmentation-based approach SAR图像中的船舶检测:基于分割的方法

Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922956

M. Sciotti, P. Lombardo

引用次数: 12

Detecting a step pattern of change in multitemporal SAR images 检测多时相SAR图像变化的阶跃模式

Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922994

T. Pellizzeri, P. Lombardo

引用次数: 5

Processing of multi-aperture SAR to produce fine-resolution images of arbitrarily large extent 处理多孔径SAR以产生任意大范围的精细分辨率图像

Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.923022

James M. Stiles, Nathan A. Goodman

{"title":"Processing of multi-aperture SAR to produce fine-resolution images of arbitrarily large extent","authors":"James M. Stiles, Nathan A. Goodman","doi":"10.1109/NRC.2001.923022","DOIUrl":"https://doi.org/10.1109/NRC.2001.923022","url":null,"abstract":"The spatial extent that can be accurately imaged by a synthetic aperture radar (SAR) is unfortunately limited. This restriction results from the fact that the number of independent pixel estimates produced by a SAR is constrained by the number of independent measurements that it collects. The solution is to increase the number of independent sensor measurements, without modifying sensor resolution. This can be accomplished by subdividing the SAR aperture into an array of receiver elements, each with a coherent receiver. This sensor collects information over both time and space, and thus space-time processing must be implemented. Three SAR processors are evaluated: a correlation processor, a maximum likelihood estimator, and a minimum mean-squared error estimator. Simulations demonstrate that all three processors can create fine resolution SAR images over an arbitrarily large area, provided that the number of array elements is sufficiently large. Additionally, it is shown that the ML and MMSE processors provide quality SAR images from a sparse receiver array, such as those produced by a \"formation-flying\" collection of radar satellites.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"5 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":"129580813","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

Characterization of C-band and X-band InSAR data for 3D urban analysis 三维城市分析的c波段和x波段InSAR数据特征

Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.923015

P. Gamba, B. Houshmand

引用次数: 0

Mitigation of digital array nonlinearities 数字阵列非线性的缓解

Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922973

D. Rabideau, L. Howard

{"title":"Mitigation of digital array nonlinearities","authors":"D. Rabideau, L. Howard","doi":"10.1109/NRC.2001.922973","DOIUrl":"https://doi.org/10.1109/NRC.2001.922973","url":null,"abstract":"In a digital array, each receiver performs analog-to-digital-conversion (ADC), with the resulting digital data later combined via digital beamforming techniques. Since ADC is performed prior to beamforming, it is thus possible to enhance the dynamic range of each digital receiver through post-ADC array integration gain. Unfortunately, receiver correlation nonlinearities, such as spurious signals (spurs) or intermodulation distortion (intermods), across receivers can severely limit the achievable dynamic range enhancement. This paper proposes a methodology for mitigating the impact of receiver nonlinearities. In our approach the receiver input signals are carefully modified in a way that varies from channel to channel. The resulting signals are then processed by each digital receiver, introducing nonlinearities. Finally, the digital signals are corrected to restore the desired linear signal components. Examples are given of how this methodology can be applied to ADC, direct digital synthesizers (DDS), digital-to-analog converters (DAC), amplifiers, and mixers. In some cases, distortion is effectively reduced by a factor of N to N/sup 2/, where N is the number of receivers.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"12 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":"134215894","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: 30

Netted radar sensing 网络雷达传感

Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922945

A. Hume, C. Baker

引用次数: 51

Moving target imaging in foliage using polarimetric multi-frequency antenna array SAR 基于极化多频天线阵列SAR的叶片运动目标成像

Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922950

Genyuan Wang, X. Xia, V. Chen

引用次数: 0

Signal processing of ground penetrating radar using super resolution technique 超分辨率探地雷达信号处理技术

Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922995

S. Shrestha, I. Arai, T. Miwa, Y. Tomizawa

引用次数: 10

A nonlinear suppression technique for range ambiguity resolution in pulse Doppler radars 脉冲多普勒雷达距离模糊分辨率的非线性抑制技术

Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200) Pub Date : 2001-05-01 DOI: 10.1109/NRC.2001.922967

J. Anderson, M. Temple, W. Brown, B. L. Crossley

引用次数: 12