The spurious signals of DDS generated by phase truncation, amplitude quantization, (D/A) conversion and reference clock are analyzed.
研究利用直接数字合成(DDS)技术产生正弦信号源的方法,对DDS中由相位截断、幅度量化、数模转换和参考时钟引入的杂散信号进行了分析,并用M atlab对相位截断误差和幅度量化误差进行了仿真,仿真结果与理论计算值吻合。
The basic operation principle of the multiple-bit amplitude quantization DRFMs was discussed, and then the general technique of Simulink modelling & simulation for multiple-bit DRFMs was proposed.
数字射频存储器(DRFM)是相干干扰机的关键部件,主要用作干扰信号源;讨论了幅度量化DRFM的工作原理与流程,给出了幅度量化DRFM的Simulink仿真模型建立与仿真实验研究的一般方法;在此基础上研究了多比特幅度量化DRFM的寄生信号性能与量化电平的关系,建立了多比特幅度量化DRFM的采样量化编码以及恢复的Simulink模型,并对多比特幅度量化DRFM的采样率与量化电平的关系进行了仿真实验,分析了实验结果,给出了结论,分析结果同时也表明了理论研究的正确性。
Its characteristics and advantages are discussed on the basis of a comparison of this method with the classical DRFM based on amplitude quantization and phase quantizatio
通过将幅相量化DRFM与传统的幅度量化和相位量化DRFM的性能进行比较,分析其特点与优势。
A new method of DRFM useing amplitude-phase quantizing is presented, based on classical amplitude quantizing DRFM and phase quantizing DRFM.
在传统的幅度量化DRFM和相位量化DRFM的基础上，提出了一种基于幅相量化的数字储频系统。
In order to dealing with this situation,we should take the following measures to stiffen the extent of discretionary action of sentencing properly:stipulate base penalty of measurement clearly in criminal law;construct a common extent of discretionary action of sentencing and stipulate the conditions of life imprisonment and death penalty;construct mechanism to limit judgers\'discretionary power.
量刑幅度存在着负效应。
Research on Calibration for Error Vector Magnitued of Digital Modulation Signal
数字调制信号误差矢量幅度校准研究
Simulation and Analysis of the Digital Transmitter EVM
数字发射机的误差矢量幅度仿真与分析
X-ray quantometer
X射线幅射强度测量计
Do you allow any quantity difference when the goods are loaded on board ship?
装船数量上是不是允许有机动幅度。
Do we allow any quantity difference when the goods are loaded on board ship?
装船数量上是不是容许有机动幅度？
Production in the factory was increasing by leaps and bounds.
这个工厂的产量在大幅度地增长。
allowance in credit amount, quantity and unit price;
信用证金额、数量和单价的增减幅度;
First, enormous increase in highway mileage.
一是公路总量大幅度增长。
The number of students in universities has jumped.
大学学生的数量已大幅度增加。
Measuring Grüneisen Parameter by High Pressure-Jump Method;
快速大幅度增压法测量物质的Grüneisen参数
Measuring Gr(?)neisen Parameter of NaC1 by Double-Quick and Larger Range Compression;
快速大幅度增压法测量NaC1的Gr(?)neisen参数
Uncertainty in amplitude measurement of high voltage pulse
脉冲高电压幅值测量的不确定度分析
On Evaluation of the Negative Domino Offect from Sentencing Extent and the Proper Stiffening Countermeasures
对量刑幅度负效应之评估与适度刚化之对策
amplitude calibration unit
振幅校准器振幅测量器
absorptive amplitude
吸收振幅，吸收幅度
Do you allow and quantity difference when the goods are loaded on board the ship ?
货物装船时是否允许在数量上有机动幅度?
The steel output of these countries fell drastically [by a wide margin] in July.
七月份这些国家的钢产量急剧[大幅度]下降。
With the help of instrument, amplitude, acceleration and right number will display.
如需看出振幅、加速度、正确数字需另购测量仪。