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Proceedings International Radar Conference最新文献

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A multi-DSP signal processing and control system for MST radar MST雷达多dsp信号处理与控制系统
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522605
M. Sarango, R. Woodman, E. Ragaini, E. Vasquez
{"title":"A multi-DSP signal processing and control system for MST radar","authors":"M. Sarango, R. Woodman, E. Ragaini, E. Vasquez","doi":"10.1109/RADAR.1995.522605","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522605","url":null,"abstract":"Atmospheric remote sensing by Doppler radar is an increasingly used technique. An MST radar is an instrument that can be used for mesosphere, stratosphere and troposphere remote sensing. This paper describes a signal processing and control system for atmospheric sounding radars, with improved characteristics with respect to formerly used architectures. The authors refer especially to wind profiling as an important and interesting application. The system allows up to 4 receiver signals to be processed at the same time, with 60 range gates and 300 m height resolution. The use of two DSPs working in parallel allows the use of a single PC for real time data processing and system control. Some experimental results are reported.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"16 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":"116690280","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
On Bayesian MHT for well-separated targets in densely cluttered environment 密集杂乱环境中分离良好目标的贝叶斯MHT
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522566
W. Koch
{"title":"On Bayesian MHT for well-separated targets in densely cluttered environment","authors":"W. Koch","doi":"10.1109/RADAR.1995.522566","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522566","url":null,"abstract":"Certain radar applications must cope with rather extreme operational conditions (densely cluttered environment/relatively small detection probabilities). Tracking in such situations calls for refined data association and processing techniques. By simulation results we demonstrate the applicability of Bayesian multiple hypothesis tracking (MRT) to well-separated targets detected with a mechanically rotating radar. Special emphasis is placed on air situations characterized by massively occurring data association conflicts.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"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":"131256616","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
Evaluation of noise and clutter induced relocation errors in SAR MTI 杂波与噪声对SAR MTI定位误差的影响
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522626
E. Yadin
{"title":"Evaluation of noise and clutter induced relocation errors in SAR MTI","authors":"E. Yadin","doi":"10.1109/RADAR.1995.522626","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522626","url":null,"abstract":"A synthetic aperture radar (SAR) is a side looking airborne radar designed to produce two dimensional high resolution radar images. Moving targets are displaced in azimuth on a SAR map. A separate SAR-MTI process is therefore used for the detection and relocation of moving targets. Errors in estimating the angular positions of the detected moving targets are referred to as relocation errors. A two port interferometer antenna whose baseline lies along the flight direction allows the detection of slow moving targets that are otherwise masked by main lobe clutter. A model for evaluating relocation errors in a two port interferometer SAR-MTI scheme is developed. The effects of various parameters such as aircraft speed, antenna beamwidth, squint angle, radar PRF and the target to noise and clutter ratios are evaluated.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"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":"130616972","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
Issues in ultra-wideband, widebeam SAR image formation 超宽带、宽波束SAR图像形成中的问题
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522595
R. Goodman, S. Tummala, W. Carrara
{"title":"Issues in ultra-wideband, widebeam SAR image formation","authors":"R. Goodman, S. Tummala, W. Carrara","doi":"10.1109/RADAR.1995.522595","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522595","url":null,"abstract":"The formation of low-frequency, ultra-wideband/widebeam (UWB/WB) SAR imagery faces inherent challenges not present in conventional SAR systems operating at higher frequencies. Small angle approximations and other shortcuts taken in conventional SAR processors may be inappropriate for the UWB/WB SAR processor. The severe range migration associated with fine resolution UWB/WB SAR poses a significant problem for the image formation algorithm. The combination of a long synthetic aperture and a wide azimuth beamwidth has important implications for motion compensation implementation and performance. We survey the major challenges to UWB/WB SAR image formation. The emphasis is on the formation of fine resolution digital imagery from low frequency UWB/WB data collected in the stripmap mode by an airborne SAR system. We examine the differences in image formation and data processing between UWB/WB systems and conventional SAR systems. We illustrate aspects of UWB/WB image formation with imagery from the P3 ultra-wideband radar system-a 0.3 m resolution SAR which operates in the VHF/UHF frequency bands.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"48 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":"122250434","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: 45
Advanced integrated architecture for airport ground movements surveillance 用于机场地面运动监视的先进集成架构
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522559
G. Galati, M. Ferri, P. Mariano, F. Marti
{"title":"Advanced integrated architecture for airport ground movements surveillance","authors":"G. Galati, M. Ferri, P. Mariano, F. Marti","doi":"10.1109/RADAR.1995.522559","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522559","url":null,"abstract":"An advanced SMGCS links airspace to airports to provide safety and efficiency during the gate-to-gate transfer of aircraft. This paper describes an advanced and flexible architecture for the surface movement radar and its integration in the SMGCS. The proposed architecture utilizes a network of millimeter-wave miniradars. Its main features are low cost and very high resolution, great flexibility and high reliability.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"34 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":"125632075","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
Moving target detection in SAR imagery: experimental results SAR图像中的运动目标检测:实验结果
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522625
D. Coe, R. White
{"title":"Moving target detection in SAR imagery: experimental results","authors":"D. Coe, R. White","doi":"10.1109/RADAR.1995.522625","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522625","url":null,"abstract":"The detection of moving targets in SAR imagery has long been recognised as being of considerable utility adding much to the value of the derived information. A major obstacle to the detection of moving targets, however, is the broadening of the clutter spectrum as a result of air or spacecraft motion. This restricts the region of clutter free spectral space in which moving targets may be detected and in some cases (for example space based radar) this region becomes negligible. One potential solution is to use more than one spatial channel of information and examples include the use of displaced phase centre antennas (DPCA) and space-time adaptive processing (STAP). We present an overview of the background theory to dual channel DPCA and demonstrate the potential for clutter cancellation under ideal conditions. We then present results from an experimental dual channel C-band SAR. This allows the detected moving target to be overlaid on the background SAR image and the actual clutter improvement obtained can be compared with that predicted.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"26 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":"132321872","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: 50
An application of automatic target recognition in marine navigation 自动目标识别在海上导航中的应用
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522554
C. Alexandrov, A. Draganov, N. Kolev
{"title":"An application of automatic target recognition in marine navigation","authors":"C. Alexandrov, A. Draganov, N. Kolev","doi":"10.1109/RADAR.1995.522554","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522554","url":null,"abstract":"An approach to sea target recognition using an incoherent marine surveillance radar is examined in this paper. Reasons for reducing the target of recognition to its tonnage class, approximate size and resulting maneuvering abilities are described. An algorithm for automatic target recognition that effectively eliminates the negative impact of noise, sea clutter and distance from the target is described. Possibilities for application in sea navigation are proposed based on experimental findings.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"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":"130758598","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
Ultra-wideband/short-pulse radar for target identification and detection-laboratory study 用于目标识别和探测的超宽带/短脉冲雷达-实验室研究
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522590
K. Chen, E. Rothwell, D. Nyquist, R. Bebermeyer, Q. Li, C. Tsai, A. Norman
{"title":"Ultra-wideband/short-pulse radar for target identification and detection-laboratory study","authors":"K. Chen, E. Rothwell, D. Nyquist, R. Bebermeyer, Q. Li, C. Tsai, A. Norman","doi":"10.1109/RADAR.1995.522590","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522590","url":null,"abstract":"A laboratory study was conducted to investigate the schemes of radar target identification and detection using an ultra-wideband/short-pulse (UWB/SP) radar. In target identification, a correlation/wavelet transform scheme, a neural network technique and a time-domain imaging scheme were studied. To detect a target in a sea clutter environment, the E-pulse technique was utilized to minimize the sea clutter while enhancing the target response, thus facilitating its detection. It appears that a UWB/SP radar may provide higher resolution for target ID and more effective clutter suppression for target detection compared with conventional radars.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"172 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":"116327771","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
Target tracking by neural network maneuver detection and input estimation 基于神经网络机动检测和输入估计的目标跟踪
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522535
F. Amoozegar, S. Sadati
{"title":"Target tracking by neural network maneuver detection and input estimation","authors":"F. Amoozegar, S. Sadati","doi":"10.1109/RADAR.1995.522535","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522535","url":null,"abstract":"Although the Kalman filter is a powerful linear estimator for a continuous random process, it may fail to converge in the presence of sharp measurement discontinuities which may be caused by clutter or sudden target maneuvers. On the other hand, conventional models for the detection and compensation of target maneuvers are primarily based on a linear mapping of the innovation process onto an artificial noise process which is used to further adjust the covariance matrices of the Kalman filter. The nonlinear mapping capabilities of trained neural networks are employed to generate an estimate of the input noise through parallel processing of the Doppler information, the innovation process, and heading change estimate of a maneuvering target in clutter. It is shown that a neural network in conjunction with the Kalman filter can better resolve the bias caused by target maneuvers.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"6 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":"130758925","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
Comparison of DPCA and STAP for space-based radar 天基雷达DPCA与STAP的比较
Proceedings International Radar Conference Pub Date : 1995-05-08 DOI: 10.1109/RADAR.1995.522530
T. Nohara
{"title":"Comparison of DPCA and STAP for space-based radar","authors":"T. Nohara","doi":"10.1109/RADAR.1995.522530","DOIUrl":"https://doi.org/10.1109/RADAR.1995.522530","url":null,"abstract":"Researchers have developed and examined adaptive moving target indicator (MTI) techniques that are able to cope with significant clutter spectral spreading that occurs for a radar mounted on a moving platform. In particular, displaced phase centre antenna (DPCA) techniques and space-time adaptive processing (STAP) techniques have been applied to airborne and space-based radars (SBR). Much work has been applied to the airborne MTI (AMTI) problem, where the literature seems to favour the use of STAP techniques over DPCA. The paper focuses on the SBR problem and examines some of the key differences between the airborne and space-based environments. In addition, the presence of targets is discussed with respect to the effect they have on target improvement factor. These discussions suggest that DPCA, rather than STAP, may well provide the better cost/performance trade-off for SBR.","PeriodicalId":326587,"journal":{"name":"Proceedings International Radar Conference","volume":"8 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":"122056470","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: 41
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