frequency time modulation
英 [ˈfriːkwənsi taɪm ˌmɒdjʊˈleɪʃən]
美 [ˈfriːkwənsi taɪm ˌmɑdʒəˈleɪʃən]
网络 频率时间调制; 频率时间调变
双语例句
- An adaptive orthogonal frequency division multiplexing ( OFDM) scheme is described with a simple space time coded transmit diversity for frequency selected fading channel by combining adaptive modulation with spacial diversity.
将自适应调制技术和空间分集技术有机地结合起来，提出了一种与简单空时编码发射机分集相结合的恒定比特率自适应正交频分复用（OFDM）方案。 - This paper indicates the normal testing methods of time domain frequency stability, and focal points out the testing methods of time domain frequency stability with modulation domain analysis.
介绍了时域频率稳定性常用的测量方法，并重点介绍了利用调制域分析仪实现时域频率稳定性的测量方法。 - The infrared detecting technique based on multi correlation of frequency and time is given. By this technique, time correlation is added to frequency modulation, and then there are certain frequency and time relation to every couple of detected points.
提出了一种基于频率和时间多重相关的红外检测技术，即在原来通用的单一频率调制的基础上加上时间相关，使得各对探测点之间有确定的频率和时间关系。 - First, the control principle and working characteristic of PWM, PFM, PWM-PFM is discussed in the thesis. PWM-PFM control has PWM and PFM specialties. As it can vary work frequency and duty ratio at the same time, it has better modulation performance.
论文首先对PWM、PFM、PWM-PFM的控制原理及工作特点进行了比较，PWM-PFM控制兼有PWM和PFM的特点，能同时实现频率和占空比的变化，因而具有更好的调制性能。 - It has the advantages of fine frequency resolution, short frequency conversion time, wide modulation bandwidth and controlling facility, and has capability of generating the different waveforms.
它具有频率分辨率高（可达uHz）、频率转换时间短（可达ns）、输出频率带宽很宽、程控灵活等优点，并具有产生多种常用波形的能力。 - Mathematics analysis in frequency domain for sample time staggered space vector modulation technique
错时采样空间矢量调制技术的频域数学分析 - The paper uses the wideband linear frequency modulation signal to measure the transport time of the signal. And with the receiver and transmitter, this system realized reception and transmission of the wideband linear frequency modulation signal.
在该系统中，采用了宽带线性调频信号进行时间的测量，并在应答器上实现了宽带线性调频信号的接收和发射。 - Modulation domain is a plane domain composed of time and frequency of signal. It reflects the relationship between time and frequency, then time-frequency graph can be imported from Modulation domain. Modulation domain provides a new method for signal analysis.
调制域是由信号的时间和频率构成的平面域，它反应信号的频率与时间的关系，可得出时间&频率曲线图，为人们提供了一个新的分析信号的方法。