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2.The Pulse Code Modulation/Frequency Modulation (PCM/FM) is widely used in most Reentry Remote Sensing (RRS) system at the present time in our country.
目前我国再入遥测系统主要采用脉冲编码调制/调频(PCM/FM)体制。收藏指正
4.A Pseudorandom Code Phase Modulation and Sinewave Frequency Modulation Combined Fuse。
伪随机码调相与正弦调频复合引信收藏指正
5.The Bluetooth adopts the 2.4GHz ISM frequency band and the frequency modulation and Frequency Hopping,and use the FEC、 ARQ、 TDD and BBP.
它采用2.4GHz ISM频段和调频、跳频技术,使用前向纠错编码、ARQ、TDD和基带协议。收藏指正
6.Switching Power Supply has three kinds of control circuits: Pulse Width Modulation (PWM), Pulse Frequency Modulation (PFM), Pulse Width and Frequency Modulation (PWM-PFM).
开关电源有三种控制方式：脉冲宽度调制(PWM)、脉冲频率调制(PFM)、脉冲宽度频率调制(PWM-PFM)。收藏指正
7.On the basis of design of DDS utilizing FPGA, it presented a method of realizing the altitude modulation by generating the main wave and the modulation wave respectively, and the frequency modulation by changing frequency tuning word of main DDS.
在利用FPGA实现DDS的基础上,使用两路DDS分别产生主波形和调制波形,方便地实现两个任意波信号的幅度调制; 同时,通过调制波形数据实时控制主DDS的频率控制字,用数字的方法直接实现波形的各种频率调制。收藏指正
8.Frequency modulation offers an effective parameter for spectral evolution: the modulation index (i).
能够控制声音的时变频谱要素对声音合成来说是至关重要的。收藏指正
9.The figure below illustrates a simple frequency modulation architecture.
下面的图表列举了一个简单的调频结构体系。收藏指正
10.EMI Reduction in Switched Power Converters Using Frequency Modulation Techniques
应用频率调制技术减小开关电力变换器的电磁干扰收藏指正