autocorrelation functionreverberationWigner distributionWe obtain the space-time autocorrelation function for a reverberation model that is constructed by the superposition of elementary signals. This is done by defining a four-dimensional Wigner spectrum which is a function of space, wavenumber, position ...
1.By using the methods of statistical optics,the time space cross autocorrelation function of dynamic speckles prduced by a hard edged scatterer is derived.用统计光学的方法,推导了硬边孔径动态散斑场的时空交叉相关函数,并讨论了散斑的平移规律和“沸腾”现象。 6)spatial correlation function空间相关函数 ...
Space-time correlation functions constitute a useful instrument from the research toolkit of continuous-media and many-body physics. Here we adopt this concept for single-particle random walks and demonstrate that the corresponding space-time velocity autocorrelation functions reveal correlations which exten...
The results of an experimental investigation of the space (between separate faces) and time correlation (or autocorrelation) of the flicker fluctuations of the field emission current from high-resitivity p-type silicon emitters over various portions of the nonlinear current-voltage characteristic are pr...
Closed-form solutions are presented, e.g., for the space-time cross-correlation function (CCF), the time autocorrelation function (ACF), and the two-... M Patzold,JA Hogstad - IEEE Vehicular Technology Conference 被引量: 153发表: 0年 Space-time velocity correlation function for random walks...
Closed-form solutions are presented, for example for the space-time cross-correlation function (CCF), the time autocorrelation function (ACF) and the two-dimensional (2-D) space CCF. It will be shown, how the parameters of the MIMO channel simulator can be determined for any given space-...
They allow to derive decorrelation distances that can be considered as characteristic sizes of a process in time and space. In the reviewed works, almost no pairs of space and time autocorrelation functions were available. We thus had to compile several pieces of correlation information, including ...
To enhance the multiple interference suppression performance of global navigation satellite system (GNSS) receivers without extra antenna elements, a space-time-frequency adaptive processor (STFAP) is investigated. Firstly, based on the analysis of the autocorrelation function of the multicomponent signal,...
Space-time (ST) coding techniques are described for multi-antenna transmissions in ultra-wideband (UWB) communication systems. The ST coding schemes may, therefore, be tailored for dense multipath channels. The techniques may be applied with linear and nonlinear modulation, coherent and noncoherent ...
摘要: This paper presents a method which allows to obtain expressions for the space-time cross correlation (STCC) and the space-frequency cross spectrum (SFCS) between signals at two receiver antennas on a mobile unit (MU) for an arbitrary scattering distribution surrounding the MU...