Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197)最新文献_第5页

Monopulse estimation and SLC configurations 单脉冲估计和SLC配置

Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197) Pub Date : 1998-05-11 DOI: 10.1109/NRC.1998.677977

J. Worms

引用次数: 3

Simplifying the computational aspects of STAP 简化STAP的计算方面

Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197) Pub Date : 1998-05-11 DOI: 10.1109/NRC.1998.677988

A. Bojanczyk, W. Melvin

引用次数: 1

Antenna measures of merit for ultra-wide synthetic aperture radar 超宽合成孔径雷达天线性能评价

Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197) Pub Date : 1998-05-11 DOI: 10.1109/NRC.1998.678023

E. Ayers, J. Ralston, R.P. Maloney, P. Tomlinson, J. McCorkle

引用次数: 2

Automatic scene tracking in radar images by sampling them over a digital video structure 通过在数字视频结构上对雷达图像进行采样来实现自动场景跟踪

Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197) Pub Date : 1998-05-11 DOI: 10.1109/NRC.1998.677983

C. S. Barreto

引用次数: 0

Processor configuration for real-time SAR image generation 处理器配置实时SAR图像生成

Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197) Pub Date : 1998-05-11 DOI: 10.1109/NRC.1998.677979

T. H. Einstein

引用次数: 0

Fast-converging maximum-likelihood interference cancellation 快速收敛的最大似然干扰消除

Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197) Pub Date : 1998-05-11 DOI: 10.1109/NRC.1998.677987

M. Steiner, K. Gerlach

{"title":"Fast-converging maximum-likelihood interference cancellation","authors":"M. Steiner, K. Gerlach","doi":"10.1109/NRC.1998.677987","DOIUrl":"https://doi.org/10.1109/NRC.1998.677987","url":null,"abstract":"The use of adaptive linear techniques to solve signal processing problems is needed particularly when the environment external to the radar is not known a priori. Due to the lack of knowledge of the external environment, adaptive techniques require a certain amount of data to cancel the interference external to the radar or communication system. The amount of data required so that the performance of the adaptive processor is close (nominally within 3 dB) to the optimum is called the convergence time of the processor. The minimization of the convergence time is important since in many environments the external interference changes with time. Although there are heuristic techniques such as the loaded sample matrix inversion (LSMI) in the literature that provide fast convergence for particular problems, there is currently not a general solution for arbitrary interference that is derived via classical theory. In this paper, the authors derive a maximum-likelihood (ML) solution for a structured covariance matrix. The only structure assumed is that the thermal noise variance is known. Using this ML estimate, simulations show that the convergence is on the order of twice the number of narrow-band interference sources.","PeriodicalId":432418,"journal":{"name":"Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123195870","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: 19

3-D jammer localization using out-of-plane multipath 利用面外多径定位三维干扰机

Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197) Pub Date : 1998-05-11 DOI: 10.1109/NRC.1998.678004

S. Coutts

引用次数: 8

Enhanced target recognition using optimum polarimetric SAR signatures 增强目标识别使用最佳极化SAR签名

Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197) Pub Date : 1998-05-11 DOI: 10.1109/NRC.1998.678017

F. Sadjadi

{"title":"Enhanced target recognition using optimum polarimetric SAR signatures","authors":"F. Sadjadi","doi":"10.1109/NRC.1998.678017","DOIUrl":"https://doi.org/10.1109/NRC.1998.678017","url":null,"abstract":"We present a new method for automatic target/object classification by using the optimum polarimetric radar signatures of the targets/objects of interest. The use of optimum polarimetric signatures for enhancing target recognition using synthetic aperture radar is explored. The polarization scattering matrix is used for the derivation of target signatures at arbitrary transmit and receive polarizations (arbitrary polarization inclination angles and ellipticity angles). Then an optimization criterion that minimizes the within class distance and maximizes the between class metrics is used for the derivation of optimum sets of polarimetric signatures. Then from sets of real fully polarimetric SAR imagery arbitrary polarization attributes are extracted. The performance of the automatic target detection and recognition algorithms using optimum sets of polarimetric signatures are derived and compared with those associated with the non-optimum signatures. The results show that noticeable improvements can be achieved by using the SAR signatures obtained via optimum transmits and receives over non-optimum signatures. This work indicates that by optimally adjusting the radar polarization-by using polarization filters-the target classification performance can be improved and targets that may not be easily separable can be separated.","PeriodicalId":432418,"journal":{"name":"Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126218797","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

Propagation modeling for VHF/UHF-radar detection of targets behind a forest VHF/ uhf雷达探测森林后目标的传播建模

Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197) Pub Date : 1998-05-11 DOI: 10.1109/NRC.1998.678022

H. Kuschel, D. Schneider

{"title":"Propagation modeling for VHF/UHF-radar detection of targets behind a forest","authors":"H. Kuschel, D. Schneider","doi":"10.1109/NRC.1998.678022","DOIUrl":"https://doi.org/10.1109/NRC.1998.678022","url":null,"abstract":"The detection of targets below line-of-sight has been one of the driving subjects in the research, related to the VHF-experimental radar LARISSA (Large wavelength Radar with Interference dependent Spectral Signal Adaptation), developed and operated at FGAN-FHP. A realistic prediction of the attenuation of electromagnetic waves caused by propagation through and above forest areas plays an important role for the configuration and performance evaluation of a VHF radar dedicated to detect hovering helicopters beyond terrain obstacles. In order to evaluate the transmission attenuation above a forest, measurements have been performed on a selected forest area near FGAN. The measurement results have been compared to a propagation model, which regards the forest as a sequence of ideally conducting diffraction screens. This study was conducted to develop, a generalized model for radio wave propagation above forests under the constraint of easy applicability to a coverage prediction model based on a digital terrain database. The measurements and calculations were restricted to horizontal polarization, as being of major importance for the detection of helicopter rotor echoes.","PeriodicalId":432418,"journal":{"name":"Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129401132","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

Photonic remoting of AN/SPQ-9B ADM ultra high dynamic range radar AN/SPQ-9B ADM超高动态距离雷达的光子遥控

Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197) Pub Date : 1998-05-11 DOI: 10.1109/NRC.1998.677970

J. Roman, L. Nichols, K. Williams, R. Esman, G. Tavik, M. Livingston, M. Parent

引用次数: 3