IEEE International Radar Conference, 2005.最新文献_第4页

Improved genetic algorithm for the design of the optimal antenna division in sub-arrays: a multi-objective genetic algorithm 子阵天线最优划分设计的改进遗传算法:多目标遗传算法

IEEE International Radar Conference, 2005. Pub Date : 2005-05-09 DOI: 10.1109/RADAR.2005.1435903

G. Golino

引用次数: 8

Nonlinear FM frequency scaling method for processing squint mode spotlight SAR 斜视模式聚束SAR的非线性调频变换方法

IEEE International Radar Conference, 2005. Pub Date : 2005-05-09 DOI: 10.1109/RADAR.2005.1435938

Li-Fang Jin, Xingzhao Liu

引用次数: 0

3-D short-range localization device by low-cost CW-Doppler radar 低成本cw -多普勒雷达三维近距离定位装置

IEEE International Radar Conference, 2005. Pub Date : 2005-05-09 DOI: 10.1109/RADAR.2005.1435888

C. Villien, V. Fleck, E. Ostertag, P. Raymond

{"title":"3-D short-range localization device by low-cost CW-Doppler radar","authors":"C. Villien, V. Fleck, E. Ostertag, P. Raymond","doi":"10.1109/RADAR.2005.1435888","DOIUrl":"https://doi.org/10.1109/RADAR.2005.1435888","url":null,"abstract":"Low cost and short range detection/localisation devices arouse a growing interest for civil and military applications such as automotive anti-collision radars or target detection devices used in active shielding. This field of application is principally devoted to FMCW radars, which allow a direct range measurement like pulsed radars, but are less expensive. In this paper we show that it is also possible, under some conditions, to perform a real time localisation based on CW radars only, by means of an adequate signal processing. The targeted application deals with short range localisation of very fast moving targets in order to engage an instantaneous riposte. In the second section of this paper, a principle for extracting the information of the position of a target from a Doppler signal is presented. Some algorithms that perform an estimation of the position within the time restrictions of our application is given in the third section. The following section focuses on the information theory, and gives some useful indications about the optimal configuration of such a detection device and the maximal theoretical performance achievable for it. Sections 5 and 6 are devoted respectively to some realisation aspects and to a few simulation results. Finally, some concluding remarks are provided in the last section.","PeriodicalId":444253,"journal":{"name":"IEEE International Radar Conference, 2005.","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122591556","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

Hybrid mitigation of distortion in digital arrays 数字阵列失真的混合缓解

IEEE International Radar Conference, 2005. Pub Date : 2005-05-09 DOI: 10.1109/RADAR.2005.1435826

D. Rabideau

{"title":"Hybrid mitigation of distortion in digital arrays","authors":"D. Rabideau","doi":"10.1109/RADAR.2005.1435826","DOIUrl":"https://doi.org/10.1109/RADAR.2005.1435826","url":null,"abstract":"Radars and other RF systems are often used to detect weak signals in the presence of strong interference. Consequently, these systems must be designed to accommodate both (1) high SNR levels, and (2) high instantaneous dynamic range (IDR) levels. Recently, digital beam forming (DBF) techniques have been proposed as a means of improving both SNR and IDR. In a DBF system, high SNR levels can be produced by coherently combining many lower IDR transmit/receive (T/R) channels. However, this does not necessarily result in an equally improved IDR because distortion, which is introduced by the RF electronics within each T/R channel, could also be coherently integrated by the beamformer. The resulting integrated distortion could exceed the noise level at the beamformer's output, thereby limiting IDR improvement. This paper describes an approach to increasing the IDR levels achieved by digital arrays. The approach combines traditional DBF techniques with new IDR enhancement measures. Dynamic range enhancement is achieved through the use of two complementary processes: (1) decorrelation of spurs, phase noise, and various intermodulation products, (2) linearization of selected intermodulation products. This approach provides an efficient means for reducing the broad range of distortion products that typically limit IDR.","PeriodicalId":444253,"journal":{"name":"IEEE International Radar Conference, 2005.","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121243286","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: 17

Deformable sea floating large antenna arrays for high frequency surface wave radar 用于高频表面波雷达的可变形海上浮动大型天线阵列

IEEE International Radar Conference, 2005. Pub Date : 2005-05-09 DOI: 10.1109/RADAR.2005.1435827

R. Guinvarc’h, A. Bourges, M. Lesturgie

引用次数: 0

Radar waveform optimization for colored noise mitigation 减少彩色噪声的雷达波形优化

IEEE International Radar Conference, 2005. Pub Date : 2005-05-09 DOI: 10.1109/RADAR.2005.1435810

J. Bergin, P. Techau, John E. Don Carlos, J. Guerci

引用次数: 64

Sea and air moving target measurements using a GSM based passive radar 使用基于GSM的无源雷达测量海空移动目标

IEEE International Radar Conference, 2005. Pub Date : 2005-05-09 DOI: 10.1109/RADAR.2005.1435932

D. Tan, Hongbo Sun, Yilong Lu

引用次数: 26

Advances in non-linear apodization for irregularly shaped and sparse two dimensional apertures 不规则形状和稀疏的二维孔径的非线性apoization研究进展

IEEE International Radar Conference, 2005. Pub Date : 2005-05-09 DOI: 10.1109/RADAR.2005.1435904

H. C. Stankwitz, S. Taylor

{"title":"Advances in non-linear apodization for irregularly shaped and sparse two dimensional apertures","authors":"H. C. Stankwitz, S. Taylor","doi":"10.1109/RADAR.2005.1435904","DOIUrl":"https://doi.org/10.1109/RADAR.2005.1435904","url":null,"abstract":"Presented in this paper are selected new methods and applications of non-linear apodization for irregularly-shaped and sparse coherent apertures and arrays. The benefits include improved impulse response performance, i.e. reduced peak sidelobes and integrated sidelobe power, along with improved mainlobe resolution, compared to classic windowing techniques. Non-linear apodization (NLA) techniques can also serve as powerful engines for effective superresolution and bandwidth extrapolation of coherent data for filling sparse apertures. The sparse aperture filling property of superresolution algorithms for radar data forms the basis for a new concept which is introduced here: synthetic multiple aperture radar technology (SMART). Increased swath and/or reduced antenna size are some of the benefits postulated for SMART applied to synthetic aperture radar (SAR) systems. The benefits of these new methods and applications for nonlinear apodization are then demonstrated for two specific applications: 1) side lobe control for Y-type synthetic aperture radiometers, such as the European soil moisture and ocean salinity (SMOS) system [12] and JPL's proposed GeoSTAR [13] concept; and, 2) filling of sparse synthetic aperture radar data by exploiting the bandwidth extrapolation properties of non-linear apodization based superresolution techniques. The methods that have been developed and demonstrated here have potential application to a wide range of passive and e microwave remote sensing and radar systems.","PeriodicalId":444253,"journal":{"name":"IEEE International Radar Conference, 2005.","volume":"142 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114088945","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

MATLAB-based toolkit for an introductory course in SAR image processing 基于matlab的SAR图像处理入门课程工具包

IEEE International Radar Conference, 2005. Pub Date : 2005-05-09 DOI: 10.1109/RADAR.2005.1435914

Randy J. Jost, A. Uppuluri

{"title":"MATLAB-based toolkit for an introductory course in SAR image processing","authors":"Randy J. Jost, A. Uppuluri","doi":"10.1109/RADAR.2005.1435914","DOIUrl":"https://doi.org/10.1109/RADAR.2005.1435914","url":null,"abstract":"This paper documents the continuation of the work that started with a student paper presented at Radar04. The earlier paper was a description of a graphic user interface (GUI) for SAR data processing that was developed for classroom use, based on a previously published algorithm. This GUI and associated MATLAB toolbox has now been extended to include several other capabilities and has grown into a toolkit that can be used in an introductory course in SAR image processing. Besides the processing of raw SAR data, the GUI and toolbox now include additional teaching and research capabilities, to include additional types of speckle filters and image compression capability. Apart from this the user can choose from two different algorithms that help to extract the single look image from the raw SAR data. These algorithms were implemented in MATLAB, because of its wide availability, and \"self documenting\" capability. Thus, the resulting package is suitable for classroom use to illustrate the principles of SAR data processing. Results of the project is made available to the radar community for use by the other schools and institutions that desire a simple SAR processing capability. The MATLAB code has been extensively commented, so that it provides useful baseline for other class projects. Although the material presented is not cutting edge research, it does provide a much-needed tutorial introduction to SAR processing in the classroom. We have also begun developing C and Python based versions of this package so that users can make comparative performance measurements and understand how various implementations of the algorithms affect the end results. We would like to acknowledge the help received from Alaska Satellite Facility (ASF) and the Space Dynamics Laboratory (SDL) at Utah State University for this project.","PeriodicalId":444253,"journal":{"name":"IEEE International Radar Conference, 2005.","volume":"25 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123051243","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

An automotive radar network based on 77 GHz FMCW sensors 基于77 GHz FMCW传感器的汽车雷达网络

IEEE International Radar Conference, 2005. Pub Date : 2005-05-09 DOI: 10.1109/RADAR.2005.1435950

Florian Fölster, H. Rohling, U. Lübbert

引用次数: 64