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Proceedings International Radar Conference最新文献

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Study of the effect of nonlinear scattering of radio waves by real metallic objects 真实金属物体对无线电波非线性散射效应的研究
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522587
V. Shteinshleiger, G. Misezhnikov, L. Melnikov
{"title":"Study of the effect of nonlinear scattering of radio waves by real metallic objects","authors":"V. Shteinshleiger, G. Misezhnikov, L. Melnikov","doi":"10.1109/RADAR.1995.522587","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522587","url":null,"abstract":"The effect of nonlinear scattering of radio waves (appearance of harmonics and combination frequencies in the scattered wave) by real metallic objects is investigated. The dependence of the nonlinear radar cross section (NRCS) of certain objects on the power flux and frequency of the wave illuminating the object is determined. The influence of the mechanical state of the object on nonlinear scattered waves is evaluated.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125230692","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
Neural approaches to ship target recognition 舰船目标识别的神经网络方法
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522577
M. Inggs, A. Robinson
{"title":"Neural approaches to ship target recognition","authors":"M. Inggs, A. Robinson","doi":"10.1109/RADAR.1995.522577","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522577","url":null,"abstract":"This paper summarizes current research into the applications of neural networks for radar ship target recognition. Three very different neural architectures are investigated and compared, namely; the feedforward network with backpropagation, Kohonen's (1990) supervised learning vector quantization network, and Simpson's (see IEEE Trans on Neural Networks, vol.3, no.5, p.776-787, 1992) fuzzy min-max neural network. In all cases, preprocessing in the form of the Fourier-modified discrete Mellin transform is used as a means of extracting feature vectors which are insensitive to the aspect angle of the radar. Classification tests are based on both simulated and real data. Classification accuracies of up to 93% are reported.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131779703","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: 22
CFAR signal detection in nonhomogeneous Weibull clutter and interference 非均匀威布尔杂波和干扰下的CFAR信号检测
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522613
P. P. Gandhi, E. Cardona, L. Baker
{"title":"CFAR signal detection in nonhomogeneous Weibull clutter and interference","authors":"P. P. Gandhi, E. Cardona, L. Baker","doi":"10.1109/RADAR.1995.522613","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522613","url":null,"abstract":"Constant false alarm rate (CFAR) radar detectors designed to operate in Rayleigh distributed clutter do not generally perform satisfactorily in the presence of non-Rayleigh clutter due to their operating in significantly deviated clutter environments and also due to their inability to maintain CFAR in non-Rayleigh clutter. Data collected by high-resolution radars have confirmed the non-Rayleigh nature of certain land and sea clutter, often described by multi-parameter log-normal, Weibull or K-statistic models. In this paper, we investigate two CFAR detectors operating in nonhomogeneous Weibull clutter and multi-target interference. First, estimates of the unknown Weibull clutter parameters are employed to obtain a CFAR detector other than the log-t detector for Weibull clutter. Instead, it is shown that there is a one-to-one correspondence between the log-t detector and the proposed alternative, thus giving statistical justification for the use of the log-t detector in Weibull clutter. Performance characteristics of the log-t detector are then presented in homogeneous as well as nonhomogeneous Weibull clutter and multi-target environment, and detailed comparisons are made.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114166235","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: 11
Space-time adaptive processing in modern electronic warfare environments 现代电子战环境中的时空自适应处理
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522618
M. Wicks, D. Piwinski, P. Li
{"title":"Space-time adaptive processing in modern electronic warfare environments","authors":"M. Wicks, D. Piwinski, P. Li","doi":"10.1109/RADAR.1995.522618","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522618","url":null,"abstract":"Extensive investments have made toward the development of adaptive array technology for airborne early warning (AEW) radar applications. A characteristic common to all AEW space-time adaptive processing (STAP) approaches designed to operate in a nonhomogeneous interference environment is that they require an estimate of the statistics of that environment based upon measured data from within the multi-dimensional cancellation space. The signal models on which most STAP schemes are based rely upon the assumption of independent and identically distributed (i.i.d.) reference data. Non-conventional ECM environments can severely alter the i.i.d. assumption, especially over extended sampling windows in range. For a radar system designed to rely upon relatively high cancellation performance, target detection capabilities can be severely degraded. We characterize adaptive array radar performance in such a non-conventional ECM environment.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115735445","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
Specular multipath from rough correlated surfaces 从粗糙相关表面的镜面多径
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522584
I. Rusnak, J. Moreshet
{"title":"Specular multipath from rough correlated surfaces","authors":"I. Rusnak, J. Moreshet","doi":"10.1109/RADAR.1995.522584","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522584","url":null,"abstract":"The problem of specular reflection from rough correlated surfaces is stated, analyzed and evaluated from analysis of digitized topographic maps. Explicit expressions for some models of the surface's correlation functions are presented in closed formulas and in graphical forms. It is shown that ignoring the correlation may cause an underestimation of the specular multipath. Digitized topographic maps are used to derive the correlation functions of some geographic regions. The results derived from digitized topographic maps show that neither the exponential nor the Gaussian correlation models are generally correct. As a result, the modified specular reflection coefficient, that takes into account the correlation of the surface, is higher with respect to the case when it is assumed that the surface is uncorrelated. The analysis shows that over sea this effect is \"felt\" only in extreme conditions, i.e. very rough seas. However, overland surfaces, usually, this effect is an important factor in the reflection mechanism.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121669916","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
Partially adaptive space-time processing for clutter suppression in airborne radars 机载雷达杂波抑制的部分自适应时空处理
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522531
Z. Bao, G. Liao, Yuhong Zhang
{"title":"Partially adaptive space-time processing for clutter suppression in airborne radars","authors":"Z. Bao, G. Liao, Yuhong Zhang","doi":"10.1109/RADAR.1995.522531","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522531","url":null,"abstract":"After analyzing the characteristics of clutter echoes received by a moving airborne radar, a general framework for partially adaptive space time processing (STP) is proposed. In order to reduce the complexity of STP without a large performance degradation, the authors describe a new partial adaptive STP for practical real-time applications with highly tolerant ability in the presence of random array errors.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122530316","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
Weather detection design issues for a solid state ASR 固态ASR的天气探测设计问题
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522604
Michael Martineau, E. L. Cole, Westinghouse
{"title":"Weather detection design issues for a solid state ASR","authors":"Michael Martineau, E. L. Cole, Westinghouse","doi":"10.1109/RADAR.1995.522604","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522604","url":null,"abstract":"Design issues surrounding the weather detection capability of a solid state airport surveillance radar (ASR) are discussed. Weather detection and mapping requirements are presented, along with implementation alternatives. Use of a solid state transmitter dictates that a chirp waveform be employed. The effect of compressed pulse range sidelobes on weather detection is therefore explored. Ground clutter suppression as it relates to false weather reporting and weather estimate biases is also discussed. Finally, sensitivity needs are detailed and the weather detection performance of a solid state alternative is compared to that of the ASR-9.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122590928","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
SAW dispersive delay lines in radar signal processing
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522639
A. Kawalec
{"title":"SAW dispersive delay lines in radar signal processing","authors":"A. Kawalec","doi":"10.1109/RADAR.1995.522639","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522639","url":null,"abstract":"SAW dispersive delay lines are used for the generation and compression of chirp signals in modern radar systems. The influence of the passband-time duration (BT) product of the chirp signal on the sidelobe level of the compressed signal is presented. By using the best method for designing a periodical dispersive transducer two filters, middleband and wideband, can be used. Theoretical and experimental results of dispersive filters are presented. These techniques are used to design 10 /spl mu/s and 16 /spl mu/s dispersive delay lines, with up to a 100% passband, on quartz and lithium niobate substrates.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"11 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131110772","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: 12
A new multi-beam radar signal processor 一种新型多波束雷达信号处理器
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522546
Y. Hara, T. Kaneko, Y. Obata, A. Shimoda, H. Yamaguchi, T. Sugimoto, J. Saito, N. Iijima, Y. Uera, T. Fujisaka, M. Kondo, M. Mizuno
{"title":"A new multi-beam radar signal processor","authors":"Y. Hara, T. Kaneko, Y. Obata, A. Shimoda, H. Yamaguchi, T. Sugimoto, J. Saito, N. Iijima, Y. Uera, T. Fujisaka, M. Kondo, M. Mizuno","doi":"10.1109/RADAR.1995.522546","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522546","url":null,"abstract":"The paper describes an overview of a novel signal processor for multi-beam radars. The processor has been developed for a digital beam forming radar system, which has a capability of generating 6 beams at the same time. The processor consists of a digital phase sensitive detector, a digital beam former, and a multi-beam signal processor, and processes the multi-channel data from the antenna. The architecture and the features of the processors are first presented, and the evaluation results of an experimental model of the processors are shown.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129154770","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
VORAD collision warning radar VORAD碰撞预警雷达
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522574
J. D. Woll
{"title":"VORAD collision warning radar","authors":"J. D. Woll","doi":"10.1109/RADAR.1995.522574","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522574","url":null,"abstract":"This paper discusses the use of radar technology for collision warning and other vehicular applications. Radar design difficulties and trade-offs regarding operating frequencies, frequency bandwidth requirements, transmitted power and the use of existing low cost production components are presented. The first commercial production radar system to be marketed, the VORAD system, is discussed and the theory of operation of this radar system is described. A discussion of existing FCC regulations as related to intentional radar radiators and future FCC considerations is provided as well as some insight into international regulatory considerations.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"265 1-2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134633350","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: 54
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