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2013 International Conference on Radar最新文献

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Hardware efficient digital channeliser designs for radar intercept applications 雷达拦截应用的硬件高效数字信道器设计
2013 International Conference on Radar Pub Date : 2013-11-04 DOI: 10.1109/RADAR.2013.6652037
Joy Li, S. D. Elton, Simon Herfurth, Peter Q. C. Ly
{"title":"Hardware efficient digital channeliser designs for radar intercept applications","authors":"Joy Li, S. D. Elton, Simon Herfurth, Peter Q. C. Ly","doi":"10.1109/RADAR.2013.6652037","DOIUrl":"https://doi.org/10.1109/RADAR.2013.6652037","url":null,"abstract":"Radio frequency (RF) signal intercept systems, such as electronic support (ES) receivers, are inherently wideband by design to provide spectral surveillance over a wide frequency range. To meet both sensitivity and frequency coverage requirements, a digital channelised receiver architecture, such as that proposed in [1], is very attractive. An improved channeliser-synthesiser architecture, which provides continuous coverage of the receiver bandwidth, has also been proposed in [5] and we provide details of a design used by DSTO in its on-going development of an experimental ES Testbed. Despite their advantages, both of these receiver architectures have a fixed channel bandwidth that cannot provide optimal bandwidth reduction for the detection and processing of a diverse set of signals, such as that encountered in radar intercept applications. In this paper, a hardware efficient, cascaded channeliser architecture is proposed which allows a wideband radar intercept receiver to dynamically customise its channel bandwidth to the bandwidth of an intercepted signal in real-time.","PeriodicalId":365285,"journal":{"name":"2013 International Conference on Radar","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123686329","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
Development of a passive retrodirective Van Atta array reflector at X-band x波段被动反向Van Atta阵列反射器的研制
2013 International Conference on Radar Pub Date : 2013-11-04 DOI: 10.1109/RADAR.2013.6652021
K. Yau
{"title":"Development of a passive retrodirective Van Atta array reflector at X-band","authors":"K. Yau","doi":"10.1109/RADAR.2013.6652021","DOIUrl":"https://doi.org/10.1109/RADAR.2013.6652021","url":null,"abstract":"Retrodirective array reflectors have found many applications in the area of collision avoidance systems, satellite communications and enhancing RCS in general. This paper presents the development of a passive retrodirective Van Atta array reflector based on microstrip antenna operating at X-band. Theoretical analysis of the Van Atta array will be outlined, together with simulation results and RCS measurements of several passive Van Atta array prototypes. Future development in extending the bandwidth of the passive Van Atta array and further increase in RCS will also be discussed.","PeriodicalId":365285,"journal":{"name":"2013 International Conference on Radar","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121597766","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: 18
Noise robust radar HRR target recognition based on Bayesian sparse learning 基于贝叶斯稀疏学习的噪声稳健雷达HRR目标识别
2013 International Conference on Radar Pub Date : 2013-11-04 DOI: 10.1109/RADAR.2013.6652041
L. Du, Penghui Wang, Lei Zhang, Hongwei Liu, Danlei Xu
{"title":"Noise robust radar HRR target recognition based on Bayesian sparse learning","authors":"L. Du, Penghui Wang, Lei Zhang, Hongwei Liu, Danlei Xu","doi":"10.1109/RADAR.2013.6652041","DOIUrl":"https://doi.org/10.1109/RADAR.2013.6652041","url":null,"abstract":"A noise robust statistical model based on Bayesian sparse learning (BSL) is developed to characterize the complex-valued high range resolution (HRR) radar target signal, motivated by the problem of radar automatic target recognition (RATR).We assume a sparseness-promoting prior on the complex echoes from the scattering centers and a Markov dependency for the location of the dominant scattering center between consecutive HRR signals in the hierarchical Bayesian model. Considering the low signal-to-noise ratio (SNR) problem for a test sample, the statistical model trained under the high SNR can be updated to match the measured test sample and the corresponding recognition decision can be made based on the updated model. Efficient inference is performed via variational Bayesian (VB) for the proposed Bayesian sparse model. To validate the formulation, we present the experimental results on the measured HRR dataset for target recognition and signal reconstruction, and provide comparisons to some other statistical models for RATR.","PeriodicalId":365285,"journal":{"name":"2013 International Conference on Radar","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127358440","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
Space-Doppler processing for multichannel ISAR imaging of non-cooperative targets embedded in strong clutter 强杂波条件下非合作目标多通道ISAR成像的空间多普勒处理
2013 International Conference on Radar Pub Date : 2013-11-04 DOI: 10.1109/RADAR.2013.6651957
A. Bacci, D. Gray, M. Martorella, F. Berizzi
{"title":"Space-Doppler processing for multichannel ISAR imaging of non-cooperative targets embedded in strong clutter","authors":"A. Bacci, D. Gray, M. Martorella, F. Berizzi","doi":"10.1109/RADAR.2013.6651957","DOIUrl":"https://doi.org/10.1109/RADAR.2013.6651957","url":null,"abstract":"Non-cooperative moving targets appear defocussed in SAR images and the blurring effect due to the unknown motion leads to low detection capabilities. In this work, clutter suppression and ISAR processing are combined to obtain well focused images of extended non-cooperative moving targets embedded in strong clutter, by exploiting Multichannel SAR (M-SAR) systems. Clutter mitigation and radar motion compensation are performed by means of the proposed Space Doppler Adaptive Processing. Then ISAR processing is used to compensate the unknown target motion. Two principal issues will be addressed. First, a technique to apply ISAR processing after clutter mitigation is presented, and then a suboptimal approach for clutter mitigation is proposed to overcome computational and statistical issues associated with estimation of clutter cross-power spectral matrix. Results of the processing applied to simulated data are provided in order to show the effectiveness of the proposed techniques.","PeriodicalId":365285,"journal":{"name":"2013 International Conference on Radar","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121537077","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
A review of high grazing angle sea-clutter 高掠角海杂波综述
2013 International Conference on Radar Pub Date : 2013-11-04 DOI: 10.1109/RADAR.2013.6651992
S. Watts, L. Rosenberg
{"title":"A review of high grazing angle sea-clutter","authors":"S. Watts, L. Rosenberg","doi":"10.1109/RADAR.2013.6651992","DOIUrl":"https://doi.org/10.1109/RADAR.2013.6651992","url":null,"abstract":"This paper reviews the published literature on the characteristics of mono-static radar sea-clutter observed with high grazing angles (typically above about 10°). To date, most of the analysis and modelling of sea-clutter has been undertaken at low grazing angles with the main application being for surface and airborne maritime radars. The paper identifies some of the data sets that have been collected and the empirical models that have been developed from them for the normalised radar cross-section. The amplitude statistics and Doppler spectra of high grazing angle clutter are reviewed and the implications for radar design and target detection are discussed.","PeriodicalId":365285,"journal":{"name":"2013 International Conference on Radar","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132808004","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
Initial investigation of a novel passive HF radar technique using available DRM and data signals 一种新型无源高频雷达技术的初步研究，利用可用的DRM和数据信号
2013 International Conference on Radar Pub Date : 2013-11-04 DOI: 10.1109/RADAR.2013.6651970
M. Underhill
{"title":"Initial investigation of a novel passive HF radar technique using available DRM and data signals","authors":"M. Underhill","doi":"10.1109/RADAR.2013.6651970","DOIUrl":"https://doi.org/10.1109/RADAR.2013.6651970","url":null,"abstract":"Digitale Radio Mondiale (DRM) signals have properties that allow extraction of aircraft distance and velocity passively at distances of up to 1500km, or more depending on the DRM type. The DRM spectra are flat and typically 10kHz wide. Aircraft velocity and approximate distance can be found from the interference patterns created by the `direct' and reflected waves received from a distant DRM transmitter as observed in a software radio SDR `waterfall' spectrum/time display of the received DRM spectrum. Up to three aircraft can typically be observed visually `by eye'. Data FAX signals having a flat 2.5kHz spectrum can be also used when DRM signals are not available. More accurate and improved ranges for more aircraft should be possible with proposed second stage FFT and radar tracking DSP algorithms operating on the received waterfalls. At HF ionospheric reflections provide a long distance OTH capability. The ionospheric multipath can be removed by suitable processing techniques. Some fundamental information theoretic performance limits of this novel technique are examined for the case of a single receiver with an omnidirectional antenna. Aircraft direction and position can to some extent be inferred from flight profile constraints. Better positioning is obtained by combining the information from Data or DRM transmissions on more than one frequency and from different locations. Phased array reception gives target direction for single frequency DRM illumination, at some increase in cost and complexity. ADS-B `virtual radar' plots provide data on local civil aircraft movements that can be compared with the DRM waterfall data for algorithm development in this novel passive radar technique.","PeriodicalId":365285,"journal":{"name":"2013 International Conference on Radar","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114175487","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
High-resolution wide area remote sensing for HF radar track registration 高频雷达航迹配准的高分辨率广域遥感
2013 International Conference on Radar Pub Date : 2013-11-04 DOI: 10.1109/RADAR.2013.6651973
M. Turley, R. Gardiner-Garden, D. Holdsworth
{"title":"High-resolution wide area remote sensing for HF radar track registration","authors":"M. Turley, R. Gardiner-Garden, D. Holdsworth","doi":"10.1109/RADAR.2013.6651973","DOIUrl":"https://doi.org/10.1109/RADAR.2013.6651973","url":null,"abstract":"Skywave radar exploit the ionospheric medium to illuminate and track targets at long ranges over vast areas. To achieve optimal performance in the dynamic clutter and noise environment cognitive radar techniques are used to advise waveform parameter and coordinate registration for localisation of targets. Here we introduce an experimental high spatial resolution support-radar that remotely senses surface backscatter clutter. A robust algorithm is described for analysis of the Doppler spectra to determine land or sea backscatter origin. The sensed land-sea interfaces can thus be used for direct registration of nearby targets or assimilation into an ionospheric map.","PeriodicalId":365285,"journal":{"name":"2013 International Conference on Radar","volume":"906 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116400075","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
Signal waveforms and range/angle coupling in coherent colocated MIMO radar 相干并置MIMO雷达信号波形及距离/角度耦合
2013 International Conference on Radar Pub Date : 2013-11-04 DOI: 10.1109/RADAR.2013.6651977
O. Rabaste, L. Savy, M. Cattenoz, Jean-Paul Guyvarch
{"title":"Signal waveforms and range/angle coupling in coherent colocated MIMO radar","authors":"O. Rabaste, L. Savy, M. Cattenoz, Jean-Paul Guyvarch","doi":"10.1109/RADAR.2013.6651977","DOIUrl":"https://doi.org/10.1109/RADAR.2013.6651977","url":null,"abstract":"In this paper, we consider the coherent colocated MIMO radar framework. We show in this paper that the MIMO ambiguity function presents a range/angle coupling for any waveform family except for perfectly orthogonal families that are unrealistic in practice. We then propose a general model for intrapulse coded MIMO waveforms, and we exhibit different waveform families within this model. For each coding scheme, the MIMO ambiguity function is studied and the range/angle coupling characterized. We also compute the corresponding Cramer-Rao Lower-Bounds. Finally real measurements obtained from a MIMO radar permit to confirm the shape of the ambiguity functions for the studied waveforms.","PeriodicalId":365285,"journal":{"name":"2013 International Conference on Radar","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132569330","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: 25
Multiband multistatic Passive Radar system for airspace surveillance: A step towards mature PCL implementations 用于空域监视的多波段多静态无源雷达系统:迈向成熟的PCL实现的一步
2013 International Conference on Radar Pub Date : 2013-11-04 DOI: 10.1109/RADAR.2013.6651988
M. Edrich, A. Schroeder
{"title":"Multiband multistatic Passive Radar system for airspace surveillance: A step towards mature PCL implementations","authors":"M. Edrich, A. Schroeder","doi":"10.1109/RADAR.2013.6651988","DOIUrl":"https://doi.org/10.1109/RADAR.2013.6651988","url":null,"abstract":"Passive Radar systems present a novel approach to airspace surveillance. They use the target illumination by third-party transmitters, e.g. FM radio or TV broadcast stations, for air target detection and localisation. Due to the great number and wide frequency spacing of available transmitters the resulting multistatic and multiband illumination of air targets can be used to reliably obtain a wide-area air picture and to improve detection and tracking performance especially for low observable air targets. As no own transmitter is used Passive Radar systems are hard to detect and hard to jam and can potentially be implemented at low cost. For these reasons, interest in Passive Radar has grown significantly over the last years. However, most Passive Radar systems have been rather experimental set-ups tailored to a single frequency band or implemented as laboratory test devices. This paper describes the design, implementation and performance evaluation of a multi-band, multi-illuminator Passive Radar system. The result of this effort is a fully mobile FM/DAB/DVB Passive Radar system with cross-band data fusion capability. Multiple measurement campaigns with a great variety of third-party transmitters and arbitrary transmitter-target-receiver geometries have been conducted. In the paper, the design considerations and the resulting Passive Radar system structure are described and the evaluation of various measurement campaigns with this system are summarized.","PeriodicalId":365285,"journal":{"name":"2013 International Conference on Radar","volume":"296 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124248456","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: 38
Application of the sparse decomposition to micromotion target detection embedded in sea clutter 稀疏分解在海杂波中微动目标检测中的应用
2013 International Conference on Radar Pub Date : 2013-11-04 DOI: 10.1109/RADAR.2013.6651978
Xiaolong Chen, Yong Chai, F.Q. Cai, J. Guan
{"title":"Application of the sparse decomposition to micromotion target detection embedded in sea clutter","authors":"Xiaolong Chen, Yong Chai, F.Q. Cai, J. Guan","doi":"10.1109/RADAR.2013.6651978","DOIUrl":"https://doi.org/10.1109/RADAR.2013.6651978","url":null,"abstract":"The sparse decomposition principle is introduced and a detection algorithm of target with micro-motion embedded in sea clutter is proposed, which can detect and extract micro-Doppler (m-D) signals in low signal-to-clutter ratio environment. Firstly, the three dimensional model of radar echo from micro-motion target is established including the 3-D rotated movements (pitch, roll, and yaw movements). Then, the detection algorithm based on matching pursuit sparse decomposition is proposed with chirp dictionary according to the form of m-D signals. The grading iterative method is employed for fast computation. In the end, simulations with dataset from the intelligent pixel processing radar verify the effectiveness as well as superiority over the commonly used detector based on Fourier transform dictionary.","PeriodicalId":365285,"journal":{"name":"2013 International Conference on Radar","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128867061","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
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