1) Virtual Frequency
虚拟频率
1.
The Design of Virtual Frequency Feature Scanning Device Based on DDS
基于数字式直接频率合成的虚拟频率特性测试仪设计
2) the kernel of virtual frequency meter
虚拟频率计核
3) virtual time frequency analyzer
虚拟时间频率分析仪
1.
The virtual instrument includes virtual function generator, virtual oscilloscope, the logical analyzer, virtual time frequency analyzer.
本论文通过对虚拟仪器和传统仪器的比较,总结了传统仪器的特点,得出虚拟仪器的优点,结合虚拟仪器的概念,旨在设计一个,基于C8051F340单片机的硬件平台,用VB编程上位机界面的虚拟仪器,包括虚拟函数发生器、虚拟示波器、虚拟逻辑分析仪、虚拟时间频率分析仪。
4) dummy frequency agility
虚拟跳频
1.
This method used wavelet analysis,combined with dummy frequency agility,which was used to eliminate the correlation of adjacent echo pulse and achieve statistic effect by changing phase series on many occasions.
该方法引入虚拟跳频技术,并与小波分析相结合,更好地进行了杂波抑制。
2.
Based on the principle of high frequency ground wave radar in realization and the basic principle of the target s angular glint,the target s angular glint in the echo signals of radar are suppressed by dummy frequency agility.
本文基于高频地波雷达的实现原理,和目标角闪烁的基本原理,对雷达回波信号采用虚拟跳频的处理方式来抑制目标角闪烁。
5) virtual frequency conversion
虚拟变频
1.
Software subdivision and "virtual frequency conversion" technology were adopted in this solution,which realized multigrade,adaptive subdivided drive in operation of stepping motor.
该方法采用软件细分、"虚拟变频"技术,实现了步进电动机多档位、带电自适应细分驱动。
6) virtual time-frequency
虚拟时频
1.
Spatial higher order time-frequency distribution and virtual time-frequency ESPRIT algorithm;
空间高阶时频分布及虚拟时频ESPRIT算法
补充资料：虚拟
1.设想;虚构。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条