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2007 IEEE Radar Conference最新文献

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Multiple Constraint Space-Time Adaptive Processing Using Direct Data Domain Least Squares (D3LS) Approach 基于直接数据域最小二乘(D3LS)方法的多约束时空自适应处理
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374316
S. Burintramart, N. Yilmazer, T. Sarkar
{"title":"Multiple Constraint Space-Time Adaptive Processing Using Direct Data Domain Least Squares (D3LS) Approach","authors":"S. Burintramart, N. Yilmazer, T. Sarkar","doi":"10.1109/RADAR.2007.374316","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374316","url":null,"abstract":"In this paper, a new direct data domain least squares (D3LS) approach is developed for multiple target detection in space-time adaptive processing (STAP). The advantage of the D3LS technique is that it does not rely on any statistical information of the interference as opposed to conventional STAP algorithms. The modified version of D3LS when more than one target is in a radar scenario will be discussed. This is equivalent to forming multiple beams simultaneously while suppressing all other interference at the radar receiver. Numerical simulations show that multiple beams are directed towards target directions correctly and maintain their gain constraints along those directions such that the target signal intensities or complex amplitudes can be estimated.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"72 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":"115971623","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
Modelling of Adaptive Multifunction Radars for Trials Planning and Acceptance 自适应多功能雷达试验规划与验收建模
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374249
W. Dawber, G. J. Hunter, J. Branson
{"title":"Modelling of Adaptive Multifunction Radars for Trials Planning and Acceptance","authors":"W. Dawber, G. J. Hunter, J. Branson","doi":"10.1109/RADAR.2007.374249","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374249","url":null,"abstract":"Adaptive, electronically scanned, radars operating in a closed loop pose a particularly challenging problem for radar modelling as traditional probabilistic modelling cannot capture the emergent, highly non-linear behaviour of this class of radar. This paper describes a new suite of models originally designed to support the development of adaptive signal processing and radar control techniques in future multifunction radars. The ability of these models to predict the performance of the radar for site specific conditions is now being exploited to design trials for the ARTIST programme and shows considerable potential to support future radar procurements.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"50 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":"132065237","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
Knowledge Aided Detection and Tracking 知识辅助检测与跟踪
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374241
C. Capraro, G. Capraro, M. Wicks
{"title":"Knowledge Aided Detection and Tracking","authors":"C. Capraro, G. Capraro, M. Wicks","doi":"10.1109/RADAR.2007.374241","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374241","url":null,"abstract":"Proper use of knowledge of the environment can assist in the detection and tracking of targets within a radar system. Referenced research shows that knowledge-aided (KA) algorithms using terrain data enhances radar performance in the filtering, detection and tracking stages of processing. This paper addresses the development and experimental demonstration of a new post detection filtering algorithm that uses digital terrain elevation data to identify shadowed regions where ground targets are not observable. This knowledge is used to eliminate false alarms from within these regions prior to track processing. A demonstration experiment is described and improvements on the order of 9.4 dB are reported.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"16 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":"131819252","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
A Two Stage GPS Anti-jamming processor for Interference Suppression and Multipath mitigation 一种用于干扰抑制和多径抑制的两级GPS抗干扰处理器
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374312
D. Lu, R. Wu, Zhigang Su, Wei Huang
{"title":"A Two Stage GPS Anti-jamming processor for Interference Suppression and Multipath mitigation","authors":"D. Lu, R. Wu, Zhigang Su, Wei Huang","doi":"10.1109/RADAR.2007.374312","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374312","url":null,"abstract":"Global Positioning System (GPS) has found wide application in many areas. However, due to the low power of the received signal, GPS is susceptible to a variety of interferences and multipath. In this paper, a two stage GPS anti-jamming processor based on adaptive arrays is proposed. Firstly, the array received signals are projected onto the orthogonal subspace corresponding to interference to suppress interferences. Then the interference free signals are further processed by a conventional data-independent beamforming to enhance the GPS direct-path signal and mitigate GPS multipath signals. Simulation results are provided to demonstrate the performance of the proposed algorithm.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"1 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":"130983124","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
Successive Target Cancelation in Pulse Compression Radars 脉冲压缩雷达中的连续目标抵消
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374336
O. Haliloglu, A. O. Yılmaz
{"title":"Successive Target Cancelation in Pulse Compression Radars","authors":"O. Haliloglu, A. O. Yılmaz","doi":"10.1109/RADAR.2007.374336","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374336","url":null,"abstract":"Many radars suffer from masking of weaker targets by stronger ones due to range sidelobes of pulse compression codes. We propose a method to prevent this by successively detecting targets and canceling their effects. Performance of the proposed method will be investigated in various scenarios with regard to existence of noise, targets, and the Doppler effect.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"6 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":"132282121","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
Spotlight SAR Raw Data Simulation Using Frequency Scaling Algorithm 基于频率缩放算法的聚光SAR原始数据仿真
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374288
Wang Yu, Zhang Zhi-min, Deng Yun-kai
{"title":"Spotlight SAR Raw Data Simulation Using Frequency Scaling Algorithm","authors":"Wang Yu, Zhang Zhi-min, Deng Yun-kai","doi":"10.1109/RADAR.2007.374288","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374288","url":null,"abstract":"SAR (synthetic aperture radar) raw signal simulation is an important tool for study and testing of different SAR processing algorithms and new SAR systems. In this paper, the system transfer function of spotlight-mode SAR is evaluated and its accuracy is described. And, frequency scaling algorithm (FSA) is employed to actualize the coupling relation between the range and azimuth in the 2-dimension frequency. An advantage of the frequency scaling algorithm is that it requires only FFT (fast Fourier transform) and complexity multiplication and avoids interpolation.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"18 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":"116962917","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
Aspects of Radar Range Super-Resolution 雷达距离超分辨率的几个方面
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374301
S. Blunt, Karl Gerlach, Thomas Higgins
{"title":"Aspects of Radar Range Super-Resolution","authors":"S. Blunt, Karl Gerlach, Thomas Higgins","doi":"10.1109/RADAR.2007.374301","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374301","url":null,"abstract":"Range resolution is generally limited by the bandwidth of the transmitted radar waveform. In this paper, the issue of range super-resolution based on the returns from a single pulse is addressed. Aspects of super-resolution are investigated for the adaptive pulse compression algorithm and least-squares estimation relative to the nominal resolution provided by the standard matched filter. Performance is ascertained for both continuous and discrete waveforms of commensurate nominal resolution via simulation. Diagonal loading of both super-resolution approaches is discussed as a means to provide robustness to moderate matrix ill-conditioning that can occur when waveforms are over-sampled.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"176 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":"116473717","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: 40
Digital Signal Generator and Receiver design For S-band Radar s波段雷达数字信号发生器与接收机设计
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374405
L. Prakasam, T. Roy, D. Meena
{"title":"Digital Signal Generator and Receiver design For S-band Radar","authors":"L. Prakasam, T. Roy, D. Meena","doi":"10.1109/RADAR.2007.374405","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374405","url":null,"abstract":"The new generation of radar has to be equipped with a high performance exciters and receivers to cope with the threat in an Electronic Warfare scenario. The threat in a complex environment with interfering signals requires a reliable signal generation with proper frequency agility and efficient gain controls in receiver units. This is quite cumbersome to achieve in analog domain. Due to digital technology advancements, it is possible to have efficient and high performance Analog-to-Digital converters (ADC),processors, high-density memories and efficient algorithms to realize highly reliable, flexible and upgradeable exciters and receivers. In this design, exciter unit comprises of various digital modules for waveform generation, clocks and synchronization signal generation for different sub-systems of the radar and digital code generation for the frequency to be synthesized. These codes are used to control the Local Oscillators (LOs) output utilized for the up-conversion. In the Receiver unit main focus is on the digital implementation of gain control like sensitivity-time-control (STC), Generation of various controls required by Synthetic noise generator and Automatic Gain Control (AGC) and Digital amplitude Phase Demodulation (DAPD) of down-converted sampled intermediate frequency (IF) signals. This work projects the digital design methodology behind the various modules identified for the Radar Signal Generation and Receiver units. The main highlight of the paper is that the entire design models described are implemented using digital methods using FPGAs. The Xilinx System Generator (XSG) design tool is used to accomplish this, which generates directly the code for a Xilinx FPGA on a target board.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"7 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":"125907001","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
Analysis of the Variation in the Main Beam Characteristics of Phase Array Radars when introduced to a Shock Environment 冲击环境下相控阵雷达主波束特性变化分析
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374206
N. J. Manzi, D. N. Tran, E. Ngai
{"title":"Analysis of the Variation in the Main Beam Characteristics of Phase Array Radars when introduced to a Shock Environment","authors":"N. J. Manzi, D. N. Tran, E. Ngai","doi":"10.1109/RADAR.2007.374206","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374206","url":null,"abstract":"Phase array radars are designed to tight tolerances in order to meet exact design constraints placed upon the characteristics of their main beam. A numerical and statistical approach will be utilized to investigate the variation of the following key parameters; gain degradation, side-lobe perturbation, beam width variation and beam pointing error (BPE). Their subsequent effect on normal operation of the radar will be looked at in detail in this paper.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"62 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":"128554454","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
A New Method for Compensation of SAR Range Cell Migration Based on the Pulse Z-Transform 基于脉冲z变换的SAR距离单元偏移补偿新方法
2007 IEEE Radar Conference Pub Date : 2007-04-17 DOI: 10.1109/RADAR.2007.374318
O. Overrein
{"title":"A New Method for Compensation of SAR Range Cell Migration Based on the Pulse Z-Transform","authors":"O. Overrein","doi":"10.1109/RADAR.2007.374318","DOIUrl":"https://doi.org/10.1109/RADAR.2007.374318","url":null,"abstract":"A new phase preserving SAR processor that solves the range dependent range cell migration problem is presented and verified theoretically in this paper. The operations involved are only Fourier transforms and multiplications. No interpolation is used, and the processor achieves O(M*log2(M)*N*log2(N)) floating point operations where M and N are arbitrary numbers of data samples in azimuth and range. The SAR processor works for squint mode as well as broadside SAR operation.","PeriodicalId":367078,"journal":{"name":"2007 IEEE Radar Conference","volume":"31 1 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":"129340224","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
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