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2009 IEEE Radar Conference最新文献

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Characterization of a 76 GHz antenna for personnel avoidance radar for robotics vehicles 机器人车辆人员躲避雷达76 GHz天线特性研究
2009 IEEE Radar Conference Pub Date : 2009-05-04 DOI: 10.1109/RADAR.2009.4977124
A. Zaghloul, S. Weiss, T. Anthony
{"title":"Characterization of a 76 GHz antenna for personnel avoidance radar for robotics vehicles","authors":"A. Zaghloul, S. Weiss, T. Anthony","doi":"10.1109/RADAR.2009.4977124","DOIUrl":"https://doi.org/10.1109/RADAR.2009.4977124","url":null,"abstract":"A radar system for robotic vehicles has been developed for collision avoidance. A major component of the system is an antenna that has a narrow beam in azimuth and a broad beam in elevation with very low side-lobes. This paper presents the design and characterization of the antenna that operates at around 76 GHz. The high operating frequency required a special set up for the measurements of the antenna performance. The antenna is designed as an array of pyramidal horns fed with an E-plane waveguide power divider that produces the required aperture taper for low side-lobes.","PeriodicalId":346898,"journal":{"name":"2009 IEEE Radar Conference","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115987080","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
On the optimality of detectors defined over the ambiguity plane 模糊平面上检测器的最优性
2009 IEEE Radar Conference Pub Date : 2009-05-04 DOI: 10.1109/RADAR.2009.4977089
Ç. Candan
{"title":"On the optimality of detectors defined over the ambiguity plane","authors":"Ç. Candan","doi":"10.1109/RADAR.2009.4977089","DOIUrl":"https://doi.org/10.1109/RADAR.2009.4977089","url":null,"abstract":"We study the detectors based on the ambiguity function. These detectors have been shown to be useful for the detection of linear frequency modulated (LFM) signals in the literature. We show that the detectors based on the projection of the cross-ambiguity surface are optimal for the detection of non-fluctuating targets in the Bayesian sense. The given optimality property strengthens the earlier results in the literature and enables us to compare different classes of detectors.","PeriodicalId":346898,"journal":{"name":"2009 IEEE Radar Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116026599","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
Development of a FPGA-based high speed FFT processor for wideband Direction of Arrival applications 基于fpga的宽带到达方向高速FFT处理器的研制
2009 IEEE Radar Conference Pub Date : 2009-05-04 DOI: 10.1109/RADAR.2009.4977061
M. Jamali, Joseph T. Downey, Nathan Wilikins, C. Rehm, J. Tipping
{"title":"Development of a FPGA-based high speed FFT processor for wideband Direction of Arrival applications","authors":"M. Jamali, Joseph T. Downey, Nathan Wilikins, C. Rehm, J. Tipping","doi":"10.1109/RADAR.2009.4977061","DOIUrl":"https://doi.org/10.1109/RADAR.2009.4977061","url":null,"abstract":"A parallel and pipelined Fast Fourier Transform (FFT) processor for use in the Direction of Arrival (DOA) estimation of a wideband waveform is presented. The selected DOA algorithm follows the Coherent Signal Subspace Method (CSSM). The target device for implementation is a Xilinx Virtex-5 Field Programmable Gate Array (FPGA). The FFT processor was developed in MATLAB Simulink using the Xilinx System Generator block-set to auto-generate VHDL code. Although the parallel and pipelined architecture uses a large portion of the available FPGA resources, the architecture does yield a high throughput.","PeriodicalId":346898,"journal":{"name":"2009 IEEE Radar Conference","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114619829","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
Continuous phase corrections applied to SAR imagery 应用于SAR图像的连续相位校正
2009 IEEE Radar Conference Pub Date : 2009-05-04 DOI: 10.1109/RADAR.2009.4976981
J. Kolman
{"title":"Continuous phase corrections applied to SAR imagery","authors":"J. Kolman","doi":"10.1109/RADAR.2009.4976981","DOIUrl":"https://doi.org/10.1109/RADAR.2009.4976981","url":null,"abstract":"Phase error compensation is typically applied identically to every pixel in a Synthetic Aperture Radar (SAR) image. For certain modern systems and applications, this methodology is on the verge of becoming insufficient. We present Pixel-Unique Phase Adjustment (PUPA), an algorithm that performs an arbitrary spatially varying correction. We treat this as a deconvolution problem for which the goal is to minimize the cost function corresponding to the maximum likelihood estimate of the restored image. Our approach uses an iterative, gradient-based optimization algorithm. This method handles nonparametric phase errors and removes distortions exactly. We present results on real SAR data and demonstrate that quality is limited only by measurement noise. We analyze performance in terms of both computational complexity and memory requirements, and discuss two different implementations that allow a tradeoff to be made between these resources.","PeriodicalId":346898,"journal":{"name":"2009 IEEE Radar Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114861552","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 Detection of Moving Targets by Focusing in UWB low frequency SAR 超宽带低频SAR中运动目标的聚焦快速检测
2009 IEEE Radar Conference Pub Date : 2009-05-04 DOI: 10.1109/RADAR.2009.4976956
V. Vu, T. Sjogren, M. Pettersson
{"title":"Fast Detection of Moving Targets by Focusing in UWB low frequency SAR","authors":"V. Vu, T. Sjogren, M. Pettersson","doi":"10.1109/RADAR.2009.4976956","DOIUrl":"https://doi.org/10.1109/RADAR.2009.4976956","url":null,"abstract":"Moving target detection in ultra-wideband (UWB) low frequency synthetic aperture radar (SAR) is associated with long integration time and has to handle azimuth focusing for reliable detection. This paper presents the theory and simulation results of the fast detection of moving targets by focusing method (FDMTF) which is understood as the detection of moving targets by focusing method (DMTF) incorporating fast time-domain algorithms in the process. Two fast time-domain algorithms fast backprojection (PBP) and fast factorized back-projection (FFBP) are considered. The results show that FDMTF performs very efficiently and still retains the ability of detection.","PeriodicalId":346898,"journal":{"name":"2009 IEEE Radar Conference","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121867299","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
Time-domain backprojection for precise geodetic coding of spaceborne SAR imagery 星载SAR图像精确大地编码的时域反投影
2009 IEEE Radar Conference Pub Date : 2009-05-04 DOI: 10.1109/RADAR.2009.4977031
L. Harcke
{"title":"Time-domain backprojection for precise geodetic coding of spaceborne SAR imagery","authors":"L. Harcke","doi":"10.1109/RADAR.2009.4977031","DOIUrl":"https://doi.org/10.1109/RADAR.2009.4977031","url":null,"abstract":"A new era of precise-orbit determination for space-borne SAR permits time-domain backprojection of the data for accurate geocoded image production. In this work, time-domain backprojection is applied to Level 1.0 data from the ALOS/PALSAR instrument to form imagery at two sites in southern California. The accuracy of the backprojection is verified by comparing the measured position of a corner reflector at a calibration site to its position in the formed SAR imagery. The observed offset of the corner reflector is ≪2 m in the range direction and 12 m in the cross-range or along track direction. Images backprojected in an absolute WGS-84 Cartesian system onto 1/3 arc second or 10 m posting digital elevation data exhibit no gross registration errors. This indicates that the backprojection image formation method may be useful for processing differential radar interferometry (D-InSAR) products, where topography terms must first be removed.","PeriodicalId":346898,"journal":{"name":"2009 IEEE Radar Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124950023","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
A new radix-N resolution-fusion method for LASAR 一种新的激光雷达基- n分辨率融合方法
2009 IEEE Radar Conference Pub Date : 2009-05-04 DOI: 10.1109/RADAR.2009.4976958
Xiaoling Zhang, S. Jun, Jianyu Yang
{"title":"A new radix-N resolution-fusion method for LASAR","authors":"Xiaoling Zhang, S. Jun, Jianyu Yang","doi":"10.1109/RADAR.2009.4976958","DOIUrl":"https://doi.org/10.1109/RADAR.2009.4976958","url":null,"abstract":"This paper concerns resolution-fusion method for linear array 3-D imaging SAR (LASAR). Limited by the length of the linear array, the cross-track (CT) resolution of LASAR is often lower than that in the along-track (AT) direction. To overcome this disadvantage, we assume that there are two LASAR systems whose trajectories are orthogonal to each other. Thus, we obtain a row-low-resolution image and a column-low - resolution image of the same scene. Using the orthogonal complement decomposition technique, we fuse the two images into one quasi-high-resolution image.","PeriodicalId":346898,"journal":{"name":"2009 IEEE Radar Conference","volume":"128 6 Suppl 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123241833","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
Location of first-order sea echo for HFSWR with image feature information 基于图像特征信息的HFSWR一阶海回波定位
2009 IEEE Radar Conference Pub Date : 2009-05-04 DOI: 10.1109/RADAR.2009.4977040
Yang Li, Qiang Yang, Ning Zhang
{"title":"Location of first-order sea echo for HFSWR with image feature information","authors":"Yang Li, Qiang Yang, Ning Zhang","doi":"10.1109/RADAR.2009.4977040","DOIUrl":"https://doi.org/10.1109/RADAR.2009.4977040","url":null,"abstract":"Influenced by ships, ionosphere interference and Bragg peak-splitting, it will be difficult of detecting or tracking HF first-order sea echo (Bragg peak) exactly. A new detection method is proposed which regards image feature of Bragg peaks in multi-scale space as indicative information and combines with global characteristics such as amplitude, symmetry, and continuity etc. Detection rules for both single and splitting Bragg peaks are also given based on characteristics knowledge. Experiment with real data shows that comparing to those classical algorithms the proposed method can detect and locate first-order sea echo more accurately in the environment with ionosphere interference, ships and clutter/noise smearing far from coast.","PeriodicalId":346898,"journal":{"name":"2009 IEEE Radar Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123794489","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
Directional moving target indication for civil traffic monitoring using single channel SAR 基于单通道SAR的民用交通监测方向运动目标指示
2009 IEEE Radar Conference Pub Date : 2009-05-04 DOI: 10.1109/RADAR.2009.4976976
P. Marques
{"title":"Directional moving target indication for civil traffic monitoring using single channel SAR","authors":"P. Marques","doi":"10.1109/RADAR.2009.4976976","DOIUrl":"https://doi.org/10.1109/RADAR.2009.4976976","url":null,"abstract":"This paper presents a novel moving target indicator which is selective with respect to a direction of interest. Preliminary results indicate that the obtained selectivity may have high interest in civil traffic monitoring using single channel SAR data.","PeriodicalId":346898,"journal":{"name":"2009 IEEE Radar Conference","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126338834","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
An approach to ground moving target indication (GMTI) using multiple resolutions of the clutter covariance matrix 基于多分辨率杂波协方差矩阵的地面运动目标指示方法
2009 IEEE Radar Conference Pub Date : 2009-05-04 DOI: 10.1109/RADAR.2009.4977036
G. Akers, J. Stiles
{"title":"An approach to ground moving target indication (GMTI) using multiple resolutions of the clutter covariance matrix","authors":"G. Akers, J. Stiles","doi":"10.1109/RADAR.2009.4977036","DOIUrl":"https://doi.org/10.1109/RADAR.2009.4977036","url":null,"abstract":"This paper presents an approach to simultaneous ground moving target indication (GMTI) and synthetic aperture radar (SAR) imaging that promises to outperform current space-time adaptive processing (STAP) GMTI techniques when jamming is not present. An inherent weakness in STAP is its inability to directly estimate the scattering statistics from nonmoving objects in the region under test. A SAR image is a measure of the scattering intensity from an illuminated area on Earth assuming everything in the scene is stationary; therefore, it provides the estimate of scattering from nonmoving targets required for GMTI. Since the homogeneity of the scattering statistics over the scene are unknown, using multiple spatial resolutions of the SAR image to estimate the scattering statistics results in more confidence in the final detection decision.","PeriodicalId":346898,"journal":{"name":"2009 IEEE Radar Conference","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116541760","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
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