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[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing最新文献

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Quantification of the difference between detection and resolution thresholds for multiple closely-spaced emitters 多个近距离发射器的检测和分辨率阈值之差的量化
[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing Pub Date : 1992-10-07 DOI: 10.1109/SSAP.1992.246895
H. Lee, F. Li
{"title":"Quantification of the difference between detection and resolution thresholds for multiple closely-spaced emitters","authors":"H. Lee, F. Li","doi":"10.1109/SSAP.1992.246895","DOIUrl":"https://doi.org/10.1109/SSAP.1992.246895","url":null,"abstract":"Based on empirical evidence, it has been noted that signal-to-noise ratio detection thresholds typically are lower than resolution thresholds. This paper quantifies the difference between thresholds for the direction finding problem in which source locations are specified by a single angular coordinate (e.g. azimuth).<<ETX>>","PeriodicalId":309407,"journal":{"name":"[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130846239","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
Least squares predictive transform space-time array processing for adaptive airborne MTI radar 自适应机载MTI雷达的最小二乘预测变换空时阵列处理
[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing Pub Date : 1992-10-07 DOI: 10.1109/SSAP.1992.246849
J. Guerci, E. Feria
{"title":"Least squares predictive transform space-time array processing for adaptive airborne MTI radar","authors":"J. Guerci, E. Feria","doi":"10.1109/SSAP.1992.246849","DOIUrl":"https://doi.org/10.1109/SSAP.1992.246849","url":null,"abstract":"A novel strategy is presented via the application of a multichannel least squares predictive transform (PT) signal modeling procedure. The crux of the technique is the utilization of a multichannel adaptive 'whitening' filter obtained from least squares PT signal modeling to 'pre-whiten' the otherwise angle-Doppler correlated clutter signal prior to detection. The synergistic effect of the prediction and transformation mechanisms provides additional means for reducing both design and implementation complexity while gradually trading off performance-as measured by the degree of clutter cancellation for the application considered. Simulation results demonstrate the utility of the approach in a radar employing an eight element phased array antenna operating in Rayleigh distributed clutter.<<ETX>>","PeriodicalId":309407,"journal":{"name":"[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133624129","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
Broadband source localization using an adaptive technique 使用自适应技术的宽带源定位
[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing Pub Date : 1992-10-07 DOI: 10.1109/SSAP.1992.246776
B. Senadji, Y. Grenier
{"title":"Broadband source localization using an adaptive technique","authors":"B. Senadji, Y. Grenier","doi":"10.1109/SSAP.1992.246776","DOIUrl":"https://doi.org/10.1109/SSAP.1992.246776","url":null,"abstract":"The first step is a frequency dependent ARMA modeling of the signals coming from an array of sensors in presence of additive white noise. The purpose is to estimate an ARMA model at a single frequency f/sub 0/ which takes into account the information available in the whole frequency band. The idea is then to exploit the frequency variation of the ARMA models. This frequency evolution appears in the state space equation of a Kalman filter indexed by frequency where the state vectors are the ARMA models. The observation equation at each frequency is given by the ARMA modeling of signals. Filtering is followed by smoothing so that the model at frequency f/sub 0/ integrates the information of all the frequency band.<<ETX>>","PeriodicalId":309407,"journal":{"name":"[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124131550","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
Performance evaluation of certain ARMA models in power spectral density estimation 某些ARMA模型在功率谱密度估计中的性能评价
[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing Pub Date : 1992-10-07 DOI: 10.1109/SSAP.1992.246875
T. Srinivasan
{"title":"Performance evaluation of certain ARMA models in power spectral density estimation","authors":"T. Srinivasan","doi":"10.1109/SSAP.1992.246875","DOIUrl":"https://doi.org/10.1109/SSAP.1992.246875","url":null,"abstract":"For an autoregressive moving average (p, q) process the performance measures considered are the asymptotic variance of the spectral estimator and the resolution of two closely spaced sinusoids in white noise. Though the AR parameters are mainly responsible for good resolution, it is shown that proper MA parameters are also necessary in some methods. Cadzow's (Indirect) method and the singular value decomposition (SVD) method are considered for comparison. It is found that both methods have approximately the same variance of the PSD estimates in the neighborhood of the frequencies of interest. The SVD method yields a much lower model order than Cadzow's method in which the MA parameters have greater influence on resolution.<<ETX>>","PeriodicalId":309407,"journal":{"name":"[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114986149","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
Bispectrum based estimation of parameters of Middleton Class A noise 基于双谱的米德尔顿A类噪声参数估计
[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing Pub Date : 1992-10-07 DOI: 10.1109/SSAP.1992.246824
V. P. Felix, V. Chander
{"title":"Bispectrum based estimation of parameters of Middleton Class A noise","authors":"V. P. Felix, V. Chander","doi":"10.1109/SSAP.1992.246824","DOIUrl":"https://doi.org/10.1109/SSAP.1992.246824","url":null,"abstract":"The proposed approach is applicable if the non-Gaussian component of the process has a non-zero mean and a skewed distribution. If the Gaussian background noise is white, it is shown that a linear relationship exists between bispectral magnitude on one frequency axis and the power spectral density of the process. Least squares estimates of the unknowns of the equation can then be obtained, from which the parameters of the process follow. Expressions for bispectrum of a stationary Poisson impulse process in terms of the rate of the process are derived. Asymptotic bias in the estimates of bispectrum of non-Gaussian processes in an additive Gaussian process is derived.<<ETX>>","PeriodicalId":309407,"journal":{"name":"[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125649018","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
Near-field plane wave generation using a minimum mean square error approach 使用最小均方误差方法的近场平面波产生
[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing Pub Date : 1992-10-07 DOI: 10.1109/SSAP.1992.246896
D.F. Groutage, J.D. Gary, D.K. Owen
{"title":"Near-field plane wave generation using a minimum mean square error approach","authors":"D.F. Groutage, J.D. Gary, D.K. Owen","doi":"10.1109/SSAP.1992.246896","DOIUrl":"https://doi.org/10.1109/SSAP.1992.246896","url":null,"abstract":"Holographic techniques are being developed to obtain near-field target strength measurements. This concept requires a projector array in the near-field to produce approximate plane waves in the volume occupied by the target. A method has been developed to generate complex weights that are applied to the elements in the projector array as amplitude shadings and time delays. This paper shows how a rectangular volume surrounding the target is a Hilbert space, and uses the classical projection theorem to obtain the optimum weights in the mean square error sense. Performance curves indicate the usefulness of this method.<<ETX>>","PeriodicalId":309407,"journal":{"name":"[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131232628","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
Interference suppression via orthogonal projections 通过正交投影抑制干涉
[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing Pub Date : 1992-10-07 DOI: 10.1109/SSAP.1992.246805
K. Abend, H. Subbaram
{"title":"Interference suppression via orthogonal projections","authors":"K. Abend, H. Subbaram","doi":"10.1109/SSAP.1992.246805","DOIUrl":"https://doi.org/10.1109/SSAP.1992.246805","url":null,"abstract":"A technique for suppressing interference in phased array antennas, called the orthogonal projection algorithm, is described. Its performance is characterized theoretically and validated using Monte-Carlo simulations. An orthonormal basis for the interference subspace is calculated in the absence of target, and interference is suppressed by projection of the steering vector onto the orthogonal complement of the interference subspace. The mean output interference plus noise power is shown to be less than that for the sample matrix inversion algorithm for all finite sample sizes. Near convergence is attained with a number of interference snapshots that approximates the dimensionality of the interference subspace and is less than the number of elements.<<ETX>>","PeriodicalId":309407,"journal":{"name":"[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing","volume":"1995 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125556753","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
Array calibration by Fourier series parameterization: stochastic maximum likelihood solution 傅立叶级数参数化阵列校准:随机最大似然解
[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing Pub Date : 1992-10-07 DOI: 10.1109/SSAP.1992.246789
M. A. Koerber, D. Fuhrmann
{"title":"Array calibration by Fourier series parameterization: stochastic maximum likelihood solution","authors":"M. A. Koerber, D. Fuhrmann","doi":"10.1109/SSAP.1992.246789","DOIUrl":"https://doi.org/10.1109/SSAP.1992.246789","url":null,"abstract":"A truncated Fourier series is proposed to approximate an array's response. Based on this model and a calibration procedure, the log-likelihood function is derived. An antenna array's response was computed using a numerical electromagnetic method. Based on this array response a calibration was simulated. Direct maximization of the log-likelihood function allowed for full azimuthal calibration with low error and required only 40 sources.<<ETX>>","PeriodicalId":309407,"journal":{"name":"[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing","volume":"220 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123315783","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
Simultaneous CFAR detection and frequency estimation of a sinusoidal signal in noise 同时CFAR检测和频率估计的正弦信号在噪声
[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing Pub Date : 1992-10-07 DOI: 10.1109/SSAP.1992.246852
J. Hwang
{"title":"Simultaneous CFAR detection and frequency estimation of a sinusoidal signal in noise","authors":"J. Hwang","doi":"10.1109/SSAP.1992.246852","DOIUrl":"https://doi.org/10.1109/SSAP.1992.246852","url":null,"abstract":"A periodogram-based method is presented for simultaneously detecting and estimating an unknown sinusoidal signal. For additive white Gaussian noise, the scheme can achieve constant-false-alarm-rate detection and provide the maximum likelihood frequency estimate. For more general colored noise, the detection performance is derived approximately, and some numerical examples show that the scheme can nominally maintain the CFAR property, thus exhibiting some degree of robustness. It can be implemented easily by VLSI hardware and is suited to real-time applications.<<ETX>>","PeriodicalId":309407,"journal":{"name":"[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing","volume":"35 15","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114087637","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
Introduction of higher order statistics for estimating the dimension of chaotic time series 引入高阶统计量估计混沌时间序列的维数
[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing Pub Date : 1992-10-07 DOI: 10.1109/SSAP.1992.246823
P. Flandrin, O. Michel
{"title":"Introduction of higher order statistics for estimating the dimension of chaotic time series","authors":"P. Flandrin, O. Michel","doi":"10.1109/SSAP.1992.246823","DOIUrl":"https://doi.org/10.1109/SSAP.1992.246823","url":null,"abstract":"Given an irregular time series, an important issue is to determine whether it stems from a stochastic or a chaotic (i.e. deterministic with few degrees of freedom) system. This is generally achieved by studying the geometry of a reconstructed attractor, although it is known that some purely stochastic processes can be associated with low-dimension attractors. It is shown that an effective estimation of the number of degrees of freedom can be obtained better through a (local) independent component analysis.<<ETX>>","PeriodicalId":309407,"journal":{"name":"[1992] IEEE Sixth SP Workshop on Statistical Signal and Array Processing","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121151034","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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