spatial spectrum造句
例句与造句
- Spatial spectrum estimation techniques for satellite interference localization
空间谱估计方法在卫星干扰源定位中的应用 - Phased array system is an important application field of spatial spectrum estimation techniques
相控阵系统是空间谱估计测向技术的一个重要的应用领域。 - Spatial spectra of neural electric activities and their application in study of visual spatial selective attention
脑电源的空间谱及其在视觉空间选择性注意研究中的应用 - The main studied topic of spatial spectrum estimation is the direction of arrival ( doa ) of spatial signals
空间谱估计的研究主题是在处理带宽内空间信号的到达方向( doa ， directionofarrival ) 。 - Due to the limitation of this algorithm , this dissertation proposes two improved methods : one - dimension noise subspace - based spatial spectrum estimation algorithm and improved music algorithm
针对算法的此局限性,本文提出了两种改进方法:基于一维噪声子空间方法的空间谱估计算法和改进music算法。 - It's difficult to find spatial spectrum in a sentence. 用spatial spectrum造句挺难的
- Among the algorithms of doa estimation , as the super - resolution spatial spectrum estimation technique , multiple signal classification ( music ) algorithm is one of the most classical algorithms
在对信号doa估计的算法中,作为超分辨空间谱估计技术的music ( multiplesignalclassification )算法是最经典的算法之一。 - By analysis of the intermediate frequency signals which through eight antennae and receiver channels , eight channels radio spatial spectrum direction finding system can reach the purpose of finding radio direction
八通道无线电空间谱测向系统通过分析经过八路天线和接收机通道以后的中频信号达到确定无线电信号方向的目的。 - The main content of this paper as follows : first of all , the imaging principle in theory of the aft is analyzed : the spatial spectrum of the target is extracted while the three fringes moving across the target , then the image is reconstructed use the algorithms
本文的主要工作如下:首先,理论分析了aft的成像原理:利用3幅干涉条纹扫描目标对目标空间频谱信息进行抽取,利用还原算法重构目标的图像。 - It has more than twenty years since the eigen - decomposition spatial spectrum estimation algorithm was presented . and a lot of efficient methods have been proposed . but most of them are based on the element outputs of the array , namely method at element level
对基于特征分解的空间谱估计测向技术的研究已进行了二十余年,并已提出了许多有效的方法,但它们绝大多数都需要已知所有阵元的输出,即为基于阵元级的方法。 - To solve the problem that the present 2 - d temporal - spatial spectrum estimation algorithms are deteriorated when the number of signals become close to the dimension of the array , a kind of new signal model and approach for 2 - d temporal - spatial spectrum estimation is proposed
摘要针对现有空时二维谱估计算法在信号数增大时均不同程度出现性能上的恶化直至失致的问题，总结了目前通用的空时二维谱估计信号模型，提出了“时域副流形”的概念及相应的信号处理方法。 - By sampling and processing signal both in time domain and in spatial domain , the information of interested contained in the signal can be exploited sufficiently . it is widely applicated in radar 、 sonar and communications . doa estimation and beamforming technique is two most important aspects of array signal processing , and doa estimation is the central problem in spatial spectrum estimation
阵列信号处理是信号处理的一个分支,广泛应用于雷达、声纳及通信等领域,通过对信号在时间和空间上同时进行采样和处理,可以更加充分地提取信号中的信息, doa估计和波束形成技术就是阵列信号处理的两个重要方面,对信号来向( doa )的估计是空间谱估计研究的主要问题。 - Super - resolution spatial spectrum estimation is applied in this dissertation to realize bearing resolution by utilizing the different bearings between targets and first - order sea echoes . the simulation of radar echoes in one resolution cell is presented based on the theoretically analyzing hf sea clutter sea clutter reflection characteristic and sea echo spectrum stretching mechanics
本文从分析高频海杂波反射特性以及平台运动引起海浪展宽机理入手,建立便于理论研究的一阶展宽的海杂波和二阶海杂波模型;在分辨单元上对雷达回波信号进行了仿真。 - There are mainly two type of algorithms used for spatial spectrum estimation : one is those based on bayesian maximum likelihood method , like the ml ( maximum likelihood ) algorithm , maximum entropy method and etc . , the others are based on the spatial decomposition or projection of correlation matrix , this kind of algorithm include vector characterization method , music ( multiple signal classification ) algorithm , projection matrix method , etc . music is a classical spatial spectrum estimation algorithm that has a super high resolution and is widely used today , however , it cannot estimate doa of signals that are correlated
空间谱估计的算法大致分两大类:一是基于极大似然估计和最大后验概率估计统计理论的算法,包括:极大似然估计法( ml ) 、最大熵法等;另一类是基于对协方差矩阵进行子空间分解或投影的算法,包括:矢量特征法、多重信号分类法( music ) 、投影矩阵法等。其中, music法是一种经典的空间谱估计主流算法,具有超强的分辨性能,但它无法实现对相干信号进行测向分辨。 - 5 ) the atmospheric noise of interferogram is a fractal process , whose spatial spectrum exhibits the characteristic - 8 / 3 powder law behavior associated with turbulence phenomena . the effects of this 1 / / process to insar dem were anylysised and the error power of noise and atmospheric term were estimated for weighted combination of multi - temporal insar data . the test results showed this data fusion process can improve the accuracy of insar dem
引i ’涉图的大气噪声为一分形过程，其空间谱表现为与涡流现象有关的8 3幂函数特性， l人气过程和噪声对利用干涉数据提取的dem精度有很大影响，利用不同时相的dem ，在小波域中估计大气和噪声的误差功率，并在此基础上对dem进行了权重融合，实验结果证明，此数据融合方法可以很好的提高干涉sar所提取的dem的精度。 - Before using phase - only algorithm to achieve nulling , estimations of the number of interferential sources and the doa of interferential signals are needed . so , the spatial spectrum estimation basd on the maximum likelihood method ( capon method ) and music algorithm used for detecting the number of interferential sources and the doa of interferential signals are discussed in the second chapter
在采用phase - only算法进行波束置零之前，需要估计干扰源的方向和个数，因此本文还在第二章介绍了发射数字波束形成中用于测定干扰源个数和方向的空间谱估计法? capon算法和music算法的测向原理，并分析了它们的性能和优缺点。