Study on cut-off frequency of abnormity wave-guide;
异型波导截止频率的研究
Effect of Co ions substitute on the cut-off frequency of NiZn ferrites;
Co~(2+)取代对NiZn铁氧体材料截止频率f_r的影响
Optimization design of excitation sources and samples position in computing cut-off frequency of waveguides by 2D-FDTD method;
2D-FDTD法计算波导截止频率的激励源设计与取样
The results show that one part of residual wavefront phase error changes with cut off frequency proportionally and another part inversely, so it becomes possible to find an optimal frequency which makes the systematic residual wavefront error minimal.
分别导出了时间响应误差和波面探测误差与截止频率之间的数学表达式， 表明剩余波差随截止频率的变化规律既有反方向部分， 又有正方向部分， 从而可以找到一个最优频率， 使得系统剩余波差最小。
The cutoff rate expressions are derived and then the performances of different DTTB systems under AWGN channel and multi-path channel conditions are compared with computer simulations.
介绍了数字电视地面传输(DTTB)标准中抗多径的方法以及ADTB-T系统在抗多径技术上的改进,通过截止率计算公式,仿真并比较了各系统的抗多径衰落的性能。
The article gives the cutoff rates of the existing five Digital TV Terrestrial Broadcasting systems (ATSC,DVB,ISDB,ADTB-T and DMB-T) under AWGN channel and multi-path channel conditions, and then compares their performance and puts forward the results.
针对现有5种数字电视地面广播系统(ATSC,DVB,ISDB,ADTB-T,DMB-T),给出了AWGN信道和多径衰落信道下各系统的截止率性能,并进行了比较。
Based on single carrier and multicarrier these two different transmission modes,the cutoff rate expressions and the outage probability expressions of the DTTB transmission systems are derived.
本文分析了数字电视地面广播通信信道具有长脉冲响应的多径衰落的特点 ,从频域上表达了其多径衰落信道模型 ;基于单载波和多载波两种不同的传输模式 ,推导了数字电视地面广播传输系统在该多径衰落信道下的系统截止率和中断概率的表达式 ;比较了基于不同数字电视地面广播传输标准和解决方案的传输系统在数字电视地面广播多径衰落信道下的系统输出的截止率和中断概率的性
Mechanism of cutoff frequency of resonator tube in thermoacoustic engine;
热声热机谐振管截止频率选择机理
Study on the influence to the cutoff frequency of semicircle-tunnel from the train;
列车对半圆拱形隧道中电磁波截止频率的影响
Effects of the metallic pit prop on the electromagnetic wave cutoff frequency in the rectangular tunnel;
矩形隧道中的金属支护立柱对电磁波截止频率的影响
An Improved Formula for Calculating Radiation Efficiency of Plate Around the Cut-off Frequency
平板截止频率附近辐射效率修正算法
Cutoff Frequencies Analysis of Bichromatic High-Order Harmonic Generation Spectra
双色激光脉冲谐波谱的截止频率分析
Effect of Train on the Cutoff Frequency of Trapezoid-Tunnel
列车对梯形隧道中电磁波截止频率的影响
THE NUMERICAL SOLUTIONS OF CUT-OFF FREQUENCY IN TWO DIELECTRIC LAYERED WAVEGUIDES BY USING BOUNDARY ELEMENT METHOD
双介质加载波导截止频率的边界元解法
Effect of Train on the Cut-off Frequency of Semi-elliptical Tunnel;
列车对半椭圆形隧道中电磁波截止频率的影响
FDTD Method Analysis of the Normalized Cut off Frequency of Coaxial Waveguides with Outer Slotted
用FDTD法计算外开槽同轴波导的归一化截止频率
Study on Effect of Filter Cut-off Frequency on Rough Point Contact Mechanism
滤波截止频率对粗糙点接触机理影响研究
An Analytical Method of Seeking Cutoff Frequency in Bode Diagram
在伯德图上求截止频率的一种解析方法
Acoustic excitation sources, high order modes and cutoff frequencies of noise were discussed for an annular combustion chamber.
论述了燃烧室的声激励源、环形燃烧室内高阶声模态及其截止频率。
Reaserch of Water Content Measuring in Crude Based on Microwave and Cut-off Frequency
基于微波截止频率的原油含水量测量方法的研究
Optical Sparse Aperture Double-Circle Array Optimization Based on Practical Cut-off Spatial Frequency
基于实际空间截止频率的稀疏孔径双圆周阵列的优化
Analysis of the Cutoff Frequency of Ridged Waveguides Partially Filled with Dielectric by Non-uniform FDTD
用非均匀网格FDTD法计算部分介质填充脊波导的截止频率
The rolloff is usually expressed as attenuation per unit interval, such as6 dB per octave.
衰减截止频率通常被表示为单位音程的衰减，比如每一个八度降低6分贝。
To improve the real-time performance of the system,an optimizing design method is given for the cut-off frequency of the LPF.
为提高系统的实时性 ,文中给出了低通滤波器截止频率的优化设计方法。
Design and Implementation of the sharp cutting-off filter for IF sampling
锐截止中频采样滤波器的设计与实现
ge wavelength of edge filter
截止滤光片的截止波长
Solution to Natural Frequency of Longitudinal Vibration for a Nonuniform Nonhomogeneous Bar with Variable Cross Section by Finite Segments Method
有限段法解非均质变截面杆纵向振动固有频率
The Application Research of Spread Spectrum Technology in LPI Radar;
扩频技术在低截获概率雷达上的应用研究