uca

Method The relationship between perfusion parameter and UCA bubble concentration in imaging plane was described by stochastic differential equation.

方法用随机微分方程的形式描述成像平面区域内UCA微泡浓度与灌注参数之间的关系；

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at last, the author simulated the performance of uca in macrocell and microcell assuming the channel being rayleigh fading.

最后在宏/微蜂窝瑞利衰落信道环境中仿真了UCA智能天线的性能，并分别与全向天线和分集天线做了对比。

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A COMPARISON BETWEEN SUBSTATION COMMUNICATION ARCHITECTURE IEC 61850 AND UCA 2.0 Substation Communication Model Based on IEC 61850

变电站通信体系IEC61850与UCA2.0对比分析基于IEC61850标准的变电站通信模式

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Simulation of DOA Estimation Algorithm Using UCA Mounted Around a Rigid Sphere Wear Measurement of Spherical Component Articulation with Roundness Machine

刚性球上均匀圆阵声源方位角估计算法仿真采用圆度仪测量球形运动副承载面磨损量方法

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In this paper, the DOA estimation methods of uniform circular array ( UCA) and the analysis of its performance are researched.

本文主要研究了基于均匀圆阵列的测向方法及其性能分析。

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In high resolution methods, MUSIC and Mini-Norm are used in UCA DOA finding, and beam-space methods are studied based on UCA.

在圆阵上应用Capon最小方差法、MUSIC方法和Mini-Norm方法进行高分辨方位估计，同时研究波束域高分辨方法在圆阵上的应用。

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In the paper, algorithms are presented to estimate the DOA of uncorrelated signals incident on a uniform circular array ( UCA).

该文研究了基于均匀圆阵阵列的信号波达方向估计问题。

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The burrow depth of Uca formosensis reaches approximately one meter in the high intertidal zone.

图37.栖息在高潮线地区的台湾招潮,其洞穴深可达一公尺.

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To address this deficiency, optional attributes can be specified to customize the default UCA ordering.

为了克服这个缺陷，可以指定可选的属性来定制默认的uca次序。

provided by jukuu

The alternate attribute controls the handling of variable characters in the UCA: white space, punctuation marks, and symbols.

替代属性控制对UCA中的可变字符的处理：空白、标点和符号。

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A algorithm for DOA estimation of coherent wideband LFM signals based on the FRFT using uniform circular array ( UCA) is proposed.

本文给出FRF域基于均匀圆阵的宽带相干LFM信号波达方向估计算法。

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The UCA used for this cancellation event is shown in Figure 33.

用于此取消事件的UCA如图33中所示。

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There is a theoretical possibility that the interaction of diagnostic ultrasound and UCA could produce bioeffects.

在理论上有这样的可能性，即诊断性超声和超声造影剂的相互作用会产生生物效应。

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the mathematical relationship between the scattering of uca and bmode video intensity was set up on the basis of bmode imaging principles.

根据B超成像原理建立了UCA的散射特性与视频强度之间的关系。

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Instead as you'll see in the logic flow of the service, the handler will call a helper service to invoke the real UCA.

相反，您会在服务的逻辑流中看到，处理程序将调用一个帮助器服务来调用实际的UCA。

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DOA Estimation of Coherent Signals Based on UCA with Improved MUSIC Algorithm

基于均匀圆阵相干信源DOA估计的改进MUSIC算法

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The UCA definition is shown in Figure 23.

UCA定义如图23中显示。

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This article references the relative articles and reviews the mechanism of UCA improving the therapeutic efficiency of HIFU and its advances of experimental studies.

本文就HIFU联合UCA治疗的作用机理及其增强治疗效果的实验研究进展进行综述。

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From the present study, the preparation of UCA includes two directions, gases inside the microbubbles and material outside the microbubbles.

就目前的研究情况来看，UCA的制备主要包括以下两个研究方向：（一）微泡内气体成分的选择：（二）微泡的外包裹材料的选择。

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The gastric ultrasound sonogram was observed and recorded after each dog was poured in the new type UCA through gastric tubes.

两组犬经胃管注入新型胃肠超声造影剂后超声观察检测，分别记录超声声像图。

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it is also introduced that uca can be transformed into the virtual uniform linear array, and the characteristic of uca is enough used in this dissertation.

通过利用预处理技术把均匀圆阵可以转换为模式空间的虚拟均匀线阵，本文在所研究的信号处理方法中充分利用了圆阵的这一特性；

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second, based on a direct array manifold in uca, the azimuth and elevation are estimated by least squares ( ls).

其次，直接利用UCA的阵列流形，采用最小二乘法估计信号二维方向角。

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DOA Estimation of Coherent Signal Based on HOC Using UCA

基于高阶累积量的均匀圆阵对相干信号的DOA估计

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Compared with ULA, UCA has many advantages, but also some disadvantages for DOA estimation because of its complicated array manifold.

UCA与ULA相比有很多优势，但是也由于阵列流型的复杂使得对UCA的DOA估计变得困难。

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Firstly, the data model and statistic model of UCA are introduced. Beam-forming principle and implementation of circular array composed of directional elements

较为详细地介绍了圆阵列天线的阵列模型、统计模型和模式空间概念。有向阵元圆形阵列声纳波束形成原理及实现

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The new lipid-coated ultrasound contrast agent ( UCA), Zhifuxian, is able to promote diagnostic efficacy of ultrasonography.

新型脂膜超声造影剂-“脂氟显”可以显著提高多种疾病的超声诊断水平。

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Computer simulation results show that for small spacing the UCA yields higher channel capacity than ULA.

仿真结果表明，天线间距较小时，采用均匀圆阵比均匀线阵的系统信道容量要高；

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In vivo experiment showed that polyelectrolyte multilayer film-coated UCA effectively enhanced the imaging of rabbit's liver parenchyma.

动物肝脏造影实验证明经过多层聚电解质膜包覆的微泡造影剂能够有效增强兔肝实质显像效果。

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Studies on DOA Estimation of Underwater Short-Range Target Based on UCA

基于圆阵的水下近程目标方位估计研究

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The empty string or LROOT for the default UCA ordering

空字符串或LROOT表示默认的UCA次序

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