But using subarray can decrease the number of the receiving channels,simplify the system design and reduce the cost.
在阵列信号处理中,大型阵由于系统结构复杂,成本较高,在实际应用中受到限制,而采用子阵结构则可以减少接收通道数,简化系统设计,降低成本。
Modern radar systems usually adopt the form of subarray in order to reduce the number of channels.
现代雷达系统一般采用子阵的形式减少通道数,均匀划分的子阵有利于减小微波网络的实现难度,但形成多波束时会出现栅瓣。
The expressions are derived which relate the cumulative probability of sidelobe to the range of element position errors,subarray position errors and a phase error in each element.
对于采用自定位设计的模块化天线阵,推导了单元位置误差和子阵位置误差的取值范围与天线副瓣累积概率的关系,以及相位误差与天线副瓣累积概率的关系。
Study on self-adapting beam forming in the sub-array beam field;
子阵波束域自适应波束形成方法研究
It\'s a simple and practical technology to reduce side-lobes in large phased-array antenna by adopting sub-array amplitude weighting,which has lower cost,but will generate high quantized lobe(grating lobe).
在大型相控阵天线中采用子阵幅度加权来降低副瓣是一项简单且实用的技术,并且成本较低,但是在副瓣区域会出现高量化瓣(栅瓣)。
The expression and transformation of refinery stream bulk properties and composition based on molecular matrix;
基于分子矩阵的炼油过程物流组成表达及转换
The turbulent characteristics,including turbulence intensity,gust factor,integral length scales and wind spectrum,were summarized based on a large amount of measured data,and compared with Code ones.
采用现场实测的方法对上海市崇明岛侯家镇气象站的近地中强度脉动风特性进行分析研究,对紊流强度、阵风因子、紊流积分尺度的统计值与规范结果进行了比较,对水平方向和垂直方向常用的几种功率谱密度函数进行了拟合修正,提出了精度优于常用风谱的谱函数表达式。
The measured wind data are analyzed in this paper to obtain the mean wind velocity and direction, gust factor, turbulence intensity, turbulence integral length, friction velocity and turbulence po.
经过对实测风速数据的分析 ,得到了平均风速和风向、阵风因子、湍流度、湍流积分长度、摩阻速度以及湍流功率谱密度函数等强风特性 ,分析结果表明 :近地强风的湍流度和阵风因子较高 ,湍流积分长度约在 80m左右 ,水平 (纵向和横向 )湍流功率谱密度函数与Simiu谱基本一致 ,但垂直湍流功率谱与Panofsky谱相差较大。
The measured wind data are analyzed in this paper to obtain wind mean wind velocity and direction, gust factor, turbulence intensity, turbulence integral length, friction velocity and turbulence pow.
经过对实测风速数据的分析,得到了平均风速和风向、阵风因子、湍流度、湍流积分长度、摩阻速度以及湍流功率谱密度函数等强风特性,分析结果表明,近地强风的湍流度和阵风因子较高,湍流积分长度约在80米左右,水平(纵向和横向)湍流功率谱密度函数与Simiu谱基本一致,但垂直湍流功率谱与Panofsky谱相差较大。
Let γ(A) denote the number of nonzero entries in the inverse of an invertible submatrix A of M(G).
设 M( G)是简单无向图 G的关联矩阵 ,A是 M( G)的可逆子矩阵 ,γ( A)是逆矩阵 A- 1中非零元素的个数 。
An equality is proved by discussing the relationship between a matrix and its submatrix and a test statistical variable for the parameter hypothesis test of liner model (Y,Xβ,σ 2I n) is obtained.
通过证明矩阵 X,X′X及其子矩阵的一个关系式 ,得到了多元正态线性模型( Y,X﹀,σ2 In)中参数﹀的假设检验问题的检验统计
A new result about the relation between the singular values of an arbitrary matrix and those of its submatrix,which is called generalized interlacing theorem,is presented.
给出关于任意一矩阵与子矩阵的奇异值关系 ,称之为广义分隔定理。
A Subarray partition approach for Wide Digital Array Radar
一种宽带数字阵雷达的子阵划分方法
Design of Microstrip Antenna Array Based on the Technology of Sub-Array Synthesis
基于子阵合成技术的微带天线阵设计
Log periodic dipole array antenna
对数偶极子阵列天线
The Properties of Matroid Operator、Matroid Mapping and Matroid Category;
拟阵算子、拟阵映射及拟阵范畴的性质
The child has spells of coughing.
这孩子咳嗽了一阵子。
The chill wind whipped in and out in gusty breaths.
一阵阵寒风像鞭子一样抽打着行人。
The children splashed their way across the river.
孩子们过河时溅起阵阵水花。
The thickness still came in his throat.
他嗓子眼儿里还是阵阵发紧。
Work songs broke the silence of the forest.
一阵阵号子声, 打破了森林的寂静。
Elementary Divisor of Characteristic Matrix of Matrix polynomial;
矩阵多项式的特征矩阵的初等因子组
Inversion of permutation factor circulant matrices over Z_p
域Z_p上的置换因子循环矩阵的逆阵
A Generalization of a Class of Inverse Problem for Matrices with a Submatrix
一类子矩阵约束下矩阵反问题的拓广
micro-electronic radar array
微电子学雷达相控阵
He bustled about the house.
他在房子里忙乱了一阵。
multicrystal phased array scanning
相控阵多晶片电子扫描
She's been having a rough time recently.
她这一阵子过得不顺心。
A blast of wind blew my hat off.
一阵风吹走了我的帽子。
There was a regular commotion in the room.
屋子里面一阵动荡。