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2007 IEEE Radar Conference最新文献

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An Adaptive Beamforming Technique for Countering Synthetic Aperture Radar (SAR) Jamming Threats 对抗合成孔径雷达(SAR)干扰威胁的自适应波束形成技术
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374292
A. S. Paine
{"title":"An Adaptive Beamforming Technique for Countering Synthetic Aperture Radar (SAR) Jamming Threats","authors":"A. S. Paine","doi":"10.1109/RADAR.2007.374292","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374292","url":null,"abstract":"In a hostile environment synthetic aperture radar (SAR) is likely to be subjected to electronic countermeasures (ECM) to prevent target detection and classification. In practice, noise jamming may not always provide an effective ECM against the SAR because of the large power output required to obscure the SAR image. A potentially more potent threat is presented by deception or repeater jamming, which can exploit the SAR processing gain and prevent target identification and classification using relatively low power output. Such jammers are likely to be light, inexpensive and readily deployable. This paper presents an adaptive beamforming (ABF) for SAR technique which can provide robust and efficient suppression of both noise and deception jamming. The paper also includes results from experiments with SAR trials data containing jamming which demonstrate the effectiveness of the technique in a system offering using two spatial channels.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117073933","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: 16
Dynamic Logic Applied to SAR Data for Parameter Estimation Behind Walls 动态逻辑在墙后SAR数据参数估计中的应用
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374331
R. Linnehan, J. Schindler, D. Brady, R. Kozma, R. Deming, L. Perlovsky
{"title":"Dynamic Logic Applied to SAR Data for Parameter Estimation Behind Walls","authors":"R. Linnehan, J. Schindler, D. Brady, R. Kozma, R. Deming, L. Perlovsky","doi":"10.1109/RADAR.2007.374331","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374331","url":null,"abstract":"Identifying and localizing targets within buildings using exterior sensors will offer superior advantages to the military and law enforcement communities. Research on wall-penetrating radar has produced significant advances in recent years regarding this topic. However, wall parameter ambiguities, multiple reflections, clutter, and measurement noise pose significant challenges to developing robust detection and estimation methods. In the present work we demonstrate can be mitigated using dynamic logic (DL), an adaptive method for iterative maximum likelihood.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117240770","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: 16
Detection with Adaptive Arrays with Irregular Digital Subarrays 带有不规则数字子阵的自适应阵列检测
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374293
U. Nickel
{"title":"Detection with Adaptive Arrays with Irregular Digital Subarrays","authors":"U. Nickel","doi":"10.1109/RADAR.2007.374293","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374293","url":null,"abstract":"In this paper we combine advanced ABF algorithms like LSMI, LMI, CAPS, and concepts for adaptive guard channels with subarrayed planar arrays together with the theoretical results available in the field of adaptive detection (GLRT, ACE, AMF tests). The aim is to define a robust adaptive sidelobe blanking (ASB) detector against combined impulse and CW interference. For the selection of the thresholds we define the detection margin as a direction dependent tool instead of the commonly used main and guard channel antenna patterns. This criterion gives insight into the critical scenarios for detection. One result we obtain is that an ASB based on the GLRT together with a low sidelobe preserving ABF algorithm like CAPS has superior performance.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115228532","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: 9
Characterization of Range Resolution as a Function of Bandwidth and Frequency 距离分辨率作为带宽和频率函数的表征
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374204
S. Welstead
{"title":"Characterization of Range Resolution as a Function of Bandwidth and Frequency","authors":"S. Welstead","doi":"10.1109/RADAR.2007.374204","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374204","url":null,"abstract":"Wideband radar systems typically express range resolution as a function of bandwidth only. This interpretation of resolution is related to the width of a single peak corresponding to a point scatterer, and is analogous to the Rayleigh criterion in optics. However, if one interprets resolution to mean the ability to resolve two closely spaced scatterers in a downconverted, pulse-compressed radar return, then resolution is a function of frequency as well as bandwidth. This paper shows that, for fixed bandwidth, the quality of peak separation in the processed return of two closely spaced scatterers is a nonlinear, nonmonotonic function of frequency and range separation. Simulation results, using full pulse-compression processing of uncompressed waveform returns, plot peak separation quality as a function of frequency. Analytical results show why this frequency-dependent behavior should be expected and how bandwidth figures in the nonlinearity as well. Frequency-dependent resolution of closely spaced scatterers has implication for applications that need high range resolution and also utilize frequency diversity for operation in a multi-radar environment.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"192 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115559531","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
Characterization of Vessel Heave and Horizontal Velocities with Airborne SAR 舰船升沉和水平速度的机载SAR表征
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374321
M. Henschel, M. Dragosevic, C. Livingstone
{"title":"Characterization of Vessel Heave and Horizontal Velocities with Airborne SAR","authors":"M. Henschel, M. Dragosevic, C. Livingstone","doi":"10.1109/RADAR.2007.374321","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374321","url":null,"abstract":"Vessels on the ocean surface move in response to propulsion forces and the dynamics of the ocean surface. A SAR measures precisely the time delay between the transmission and reception of a RADAR pulse. This paper presents a parametrization of the equations describing the movement of a vessel as it is imaged by a single channel airborne SAR. This parametrization explicitly accounts for the nonlinear vertical motion of the ship. When the vessel is moving with an across track component of velocity, we are able to characterize the pitch motion -with reference to the SAR data only. By capturing the pitch motion at different points on the vessel, we are able to demonstrate an increase in target focus that implies a more accurate estimation of velocities in the horizontal plane. This paper provides the theoretical background for the methodology and presents a case study of a large vessel travelling across track.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"13 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132339971","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: 15
Si Based UWB Radar Sensors 硅基超宽带雷达传感器
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374297
I. Gresham, A. Jenkins, N. Kınayman, R. Point, Yumin Lu, R. Ito, A. Street
{"title":"Si Based UWB Radar Sensors","authors":"I. Gresham, A. Jenkins, N. Kınayman, R. Point, Yumin Lu, R. Ito, A. Street","doi":"10.1109/RADAR.2007.374297","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374297","url":null,"abstract":"Automotive short-range sensor networks at 24 GHz represent the first truly high volume commercial system at mm-wave, with first year production quantities already eclipsing previous products such as autonomous cruise control (ACC), and the various microwave radio networks (e.g. LMDS). The emphasis on product quality, reliability, cost, and performance demanded by automotive OEMs has meant that an innovative approach to product development, packaging, and test has had to be introduced to mm-wave products. This paper will highlight some of the key technical hurdles and their solutions in the development and introduction to production of a 24 GHz UWB radar sensor based on custom-designed SiGe ICs.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131198616","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
Restriction Analysis of SAR Azimuth Resolution Based on Cubic Phase Error 基于三次相位误差的SAR方位分辨率约束分析
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374328
G.-G. Hu, Jia-bin Xiang, Jia Xu
{"title":"Restriction Analysis of SAR Azimuth Resolution Based on Cubic Phase Error","authors":"G.-G. Hu, Jia-bin Xiang, Jia Xu","doi":"10.1109/RADAR.2007.374328","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374328","url":null,"abstract":"Based on quadratic Taylor series approximation, the restriction on SAR azimuth resolution owing to cubic phase error is deeply analyzed in this paper. To avoid the shortcoming of the non-orthogonality of Taylor series expansion adopted by the traditional analysis method, a new analysis method is proposed based on the Legendre orthogonal polynomial expansion in this paper. Accordingly, the restriction on azimuth resolution is deduced via closed expressions based on SAR systematic parameters. Finally, by using the simulation results of airborne and spaceborne SAR, it is shown that the proposed analysis method is effective and applicable in SAR systematic optimization and design.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121564255","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
Ionospheric clutter mitigation with knowledge aided pre-whiten in High Frequency Surface Wave Radar 基于知识辅助的高频表面波雷达电离层杂波抑制
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374279
Li Lei, Xu Rongqing, Li Gaopeng
{"title":"Ionospheric clutter mitigation with knowledge aided pre-whiten in High Frequency Surface Wave Radar","authors":"Li Lei, Xu Rongqing, Li Gaopeng","doi":"10.1109/RADAR.2007.374279","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374279","url":null,"abstract":"Ionospheric clutter has proven to be the greatest impediment in high frequency surface wave radar (HFSWR). It influences most range bins, all Doppler bins and beams. Knowledge-aided ionospheric clutter mitigation using multiple coherent processing interval (CPI) data was described. The approach is based on estimation of the near vertical incidence clutter by past CPI data to provide improved knowledge of clutter statistics. Knowledge aided pre-whitening filter was used to cancel both near vertical incidence clutter and the range wrap clutter. Experimental results demonstrate that the algorithm is able to suppress the ionospheric clutter whilst preserving the desired characteristics of the target echoes.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"137 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123244703","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
Comparison of Clutter and Multipath Cancellation Techniques for Passive Radar 无源雷达杂波与多径对消技术比较
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374262
R. Cardinali, F. Colone, C. Ferretti, P. Lombardo
{"title":"Comparison of Clutter and Multipath Cancellation Techniques for Passive Radar","authors":"R. Cardinali, F. Colone, C. Ferretti, P. Lombardo","doi":"10.1109/RADAR.2007.374262","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374262","url":null,"abstract":"In this paper we address the problem of clutter and multipath cancellation in passive radar. Different adaptive techniques are considered based on both well known approaches and innovative strategies proposed by the authors. The performance comparison allows to understand the particular behaviour of each technique in a practical scenario. The proposed innovative strategies are shown to be very appealing solutions for disturbance cancellation in passive radar.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130059830","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: 136
Fisher Ratio Optimization under Volterra Filtering Model for Identification of Polarimetric Air/Air Range Profiles of Aircrafts 基于Volterra滤波模型的飞机极化空气/空气距离轮廓识别Fisher比优化
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374325
C. Enderli
{"title":"Fisher Ratio Optimization under Volterra Filtering Model for Identification of Polarimetric Air/Air Range Profiles of Aircrafts","authors":"C. Enderli","doi":"10.1109/RADAR.2007.374325","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374325","url":null,"abstract":"This paper introduces an original supervised classification method based on the optimization of the Fisher ratio under the Volterra filtering model. Optimum Volterra filters are derived for the problem of discriminating 2 classes. They have properties yielding some decision strategy that aims to reject (i.e. take no decision) data corresponding to unlearned classes. An original extension of this solution is then proposed for the problem of discriminating more than 2 classes. Performances of our method are evaluated by classifying real data of jet fighters range profiles. Influence of the filtering model order is investigated. Interest of the waveform polarization states is also analyzed. Results obtained show that our method outperforms the nearest neighbor classification method in term of error probability, while yielding equivalent performances in term of correct identification probability. Moreover, it is shown that good rejection probability of unlearned classes can be obtained, particularly with fully-polarized data.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128712193","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
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