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Frequency hopping waveform diversity for time delay estimation 跳频波形分集时延估计
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1049/SBRA023E_CH72
R. Kozick, Brian M. Sadler
{"title":"Frequency hopping waveform diversity for time delay estimation","authors":"R. Kozick, Brian M. Sadler","doi":"10.1049/SBRA023E_CH72","DOIUrl":"https://doi.org/10.1049/SBRA023E_CH72","url":null,"abstract":"Frequency hopping (FH) waveforms are attractive for time delay estimation (TDE) because they allow receivers with high dynamic range and narrow bandwidth on each hop. This paper presents a study of design considerations for FH wave-forms that are used for TDE. We analyze a baseband model that corresponds to down-converting all carrier frequencies to baseband, and then jointly processing the baseband signals from each carrier to perform TDE. We study the impact on TDE performance of dwell time, number of hops, signal to noise ratio (SNR), bandwidth, training symbol sequence, fading, and coherent versus noncoherent TDE algorithms that estimate or do not estimate the channel, respectively. We present the maximum likelihood estimator (MLE) and the Cramer-Rao bound (CRB) on TDE for several cases, and we demonstrate with computer simulations that a non-coherent matched filter achieves the CRB when the SNR exceeds a threshold.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125049934","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: 10
A general analytic framework for spectrally modulated, spectrally encoded signals 频谱调制、频谱编码信号的一般分析框架
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321410
M. L. Roberts, M. Temple, M. Oxley, R. Mills, R. Raines
{"title":"A general analytic framework for spectrally modulated, spectrally encoded signals","authors":"M. L. Roberts, M. Temple, M. Oxley, R. Mills, R. Raines","doi":"10.1109/WDD.2006.8321410","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321410","url":null,"abstract":"This paper presents a general analytic framework which mathematically incorporates the waveform adaptivity and diversity found in spectrally modulated, spectrally encoded (SMSE) signals. It is envisioned that waveforms of future fourth generation (4G) radios will cognitively adapt to changing channel conditions, traffic loads, interfering signals, and spectrum availability. Some proposed 4G architectures are considering SMSE techniques as the key enabler for cognitive communication. Hence, it is instructive to develop a framework from which SMSE signals can be derived, analyzed, and implemented for both single-channel and multi-channel systems. This paper presents a concise mathematical model which generally, accurately, and completely describes the characteristics of SMSE signals. As developed, the model is easily implementable using software defined radio (SDR) techniques. To demonstrate the model's utility, examples are provided for three current SMSE techniques, including OFDM, MC-CDMA, and the TDCS.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115465915","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: 32
Combined adaptive pulse compression and adaptive beamforming for multistatic shared-spectrum radar 多基地共享频谱雷达的自适应脉冲压缩与自适应波束形成组合
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321441
K. Gerlach, A. Shackelford, S. Blunt
{"title":"Combined adaptive pulse compression and adaptive beamforming for multistatic shared-spectrum radar","authors":"K. Gerlach, A. Shackelford, S. Blunt","doi":"10.1109/WDD.2006.8321441","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321441","url":null,"abstract":"In this paper we present a method to reduce the interference between shared spectrum multistatic radars by performing joint adaptive pulse compression (APC) in conjunction with adaptive beamforming. A recently proposed algorithm based on a Minimum Mean Square Error (MMSE) formulation, Multistatic Adaptive Pulse Compression (MAPC) [1]-[3] has been shown to successfully suppress both range sidelobes and interference from multiple radars operating in the same spectrum. Here, we combine an adaptive beamforming component with the MAPC algorithm to enable further mutual interference suppression and hence better estimation performance such that the number of multistatic radars simultaneously operating in the same spectrum may be increased for the same mean-square estimation error.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128104725","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
Adaptive processing with frequency diverse distributed apertures 频率变化分布孔径的自适应处理
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321418
L. Applebaum, R. Adve
{"title":"Adaptive processing with frequency diverse distributed apertures","authors":"L. Applebaum, R. Adve","doi":"10.1109/WDD.2006.8321418","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321418","url":null,"abstract":"This paper extends a model for a frequency diverse distributed radar array. The system consists of a sparse antenna array with each element transmitting a unique carrier frequency. Delays are used to focus the array. Due to carrier orthogonality, frequencies are processed independently with Space-Time Adaptive Processing (STAP) and later combined. Simulation results illustrate that target resolution is possible on the array's perpendicular axis. However, challenges involving covariance matrix estimation, grating lobes and cross-carrier coherence are revealed. This model will serve as a framework for future work on distributed waveform diverse arrays.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114317262","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
GSO: A new integrated evolutionary procedure for high dimension electromagnetic problems GSO:一种新的求解高维电磁问题的集成演化方法
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321454
E. A. Grimaldi, A. Gandelli, F. Grimaccia, M. Mussetta, R. Zich
{"title":"GSO: A new integrated evolutionary procedure for high dimension electromagnetic problems","authors":"E. A. Grimaldi, A. Gandelli, F. Grimaccia, M. Mussetta, R. Zich","doi":"10.1109/WDD.2006.8321454","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321454","url":null,"abstract":"The paper presents a new hybrid optimization method for solving large domain electromagnetic problems. The approach uses a strong co-operation of Genetic Algorithms and Particle Swarm Optimization. Some numerical results are shown analysing a mathematical problem, optimization of a sinc function and an electromagnetic one, optimization of a linear array of radiators.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132458775","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
A new approach of the beam ray tracing with double diffraction, for outdoor propagation 一种用于室外传播的双衍射光束追踪的新方法
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321412
L. Valbonesi, D. Monopoli, R. Zich
{"title":"A new approach of the beam ray tracing with double diffraction, for outdoor propagation","authors":"L. Valbonesi, D. Monopoli, R. Zich","doi":"10.1109/WDD.2006.8321412","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321412","url":null,"abstract":"In this work, we have considered the problem of the urban propagation and we chose to use the deterministic method beam ray tracing (BRT). This is an evolution of the ray tracing method based on the propagation of the beams instead of the rays. In particular we analyze the contribution of multi diffracted rays. Subsequently we investigate the difference of the order of magnitude between a sequence o two simple diffraction and a double diffraction.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130841619","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
Node location for netted radar target classification 网络雷达目标分类的节点定位
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321475
M. Vespe, C. Baker, H. Griffiths
{"title":"Node location for netted radar target classification","authors":"M. Vespe, C. Baker, H. Griffiths","doi":"10.1109/WDD.2006.8321475","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321475","url":null,"abstract":"In this paper, a survey of the benefits of radar target classification performance provided by multiple sensing perspectives is presented. Two and three-perspective classification performance as a function of the angular displacement between the perspectives are presented. Results indicate a considerable improvement in performance when compared with the more usual monostatic radar approach to target classification. Additionally, it is important to recognise that there is a dependence on the target's geometrical symmetries as well as the particular topology of the network.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131808553","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
Design of notch-on-transmit linear FM waveform for radar signals 雷达信号的发射陷波线性调频波形设计
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321445
C. Le, S. Hensley, P. Rosen
{"title":"Design of notch-on-transmit linear FM waveform for radar signals","authors":"C. Le, S. Hensley, P. Rosen","doi":"10.1109/WDD.2006.8321445","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321445","url":null,"abstract":"Notch filter design using standard FIR and IIR techniques is presented, followed by the discussion on the use of sharpening filter to sharpen the filter's frequency response. Examples of notched waveforms are illustrated to show the effectiveness of the techniques.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134352120","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
Moving target indication enhancement in FMCW SAR using deramped randomized stepped-frequency signals 基于减振随机阶跃频率信号的FMCW SAR运动目标指示增强
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321472
A. Meta, P. Hoogeboom, L. Ligthart
{"title":"Moving target indication enhancement in FMCW SAR using deramped randomized stepped-frequency signals","authors":"A. Meta, P. Hoogeboom, L. Ligthart","doi":"10.1109/WDD.2006.8321472","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321472","url":null,"abstract":"A new technique to enhance the indication of moving targets is proposed, which makes use of randomized Stepped Frequency Continuous Wave (SFCW) modulations, where the frequency order is changed from pulse to pulse. This kind of signals gives the possibility to discriminate target responses whose Doppler spectrum is folded back into the clutter region. The discrimination is performed directly during the range compression, so avoiding spectrum aliasing in the Doppler domain. For the range compression, the deramping technique, commonly used with linear SFCW, is extended to the case of non linear stepped modulations. In this way, the sampling constraints can be relaxed also when using randomized SFCW signals, allowing the same sampling frequency as with deramped linear SFCW, and reducing therefore the system complexity. Compared to linear modulations, randomized SFCW signals give also the advantage to suppress range ambiguities and therefore the capability to look at further range.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134538005","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: 8
Beam and waveform scheduling approach to combined radar surveillance & tracking — The Paranoid tracker 联合雷达监视和跟踪的波束和波形调度方法-偏执跟踪器
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321431
S. Suvorova, S. Howard, W. Moran
{"title":"Beam and waveform scheduling approach to combined radar surveillance & tracking — The Paranoid tracker","authors":"S. Suvorova, S. Howard, W. Moran","doi":"10.1109/WDD.2006.8321431","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321431","url":null,"abstract":"In several previous papers, we have applied single and multiple step ahead scheduling techniques to reduce the amount of time an adaptive radar spends on tracking known targets while retaining a given level of track accuracy. This paper reports on our initial study of practical methods for achieving a unification of surveillance and tracking in terms of radar resource management. The method proposed here involves the introduction of permanently existing virtual targets, judiciously placed in the field of view of the radar. The tracker's belief in the existence of the virtual or fictitious targets led us to the name Paranoid Tracker for this approach.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117214538","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
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