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pll
- Phase Locked Loops (PLL) Introduction to PLL The concept of Phase Locked Loops (PLL) first emerged in the early 1930’s.But the technology was not developed as it now, the cost factor for developing this technology was very high. Since the adva
qam
- QAM是Quadrature Amplitude Modulation的缩写，中文译名为“正交振幅调制”，其幅度和相位同时变化，属于非恒包络二维调制。QAM是正交载波调制技术与多电平振幅键控的结合 。-QAM is Quadrature Amplitude Modulation Abbreviation, Chinese translation for " quadrature amplitude modulation" , the amplitude and phase cha
MSK
- msk调制，最小频移键控。通过时间来控制，而不是通过相位。-MSK modulation, the minimum frequency shift keying.To control the over time, rather than through phase.
suijixinhaochuli
- 第一个程序为模拟产生一个正态随机序列X(n)，画出产生的随机序列波形、相关函数（与理论曲线对比） 和功率谱密度。第二个程序为产生一个信号X(n)，绘出信号及其幅度频谱曲线，当中心频率向左搬移f0＝200Hz时，求出其低通等效信号，并绘出其幅度频谱、信号的同相、正交分量及包络。当中心频率向左搬移f0＝100Hz时，求出其低通等效信号，并绘出其幅度频谱、信号的同相、正交分量及包络。-The first program to simulate the amount of generating a
paper_1989_08
- Spectral Shift and Distortion due to self phase modulation of picosecond pulse
phasecode
- 本程序为脉冲压缩雷达回波产生与处理。包括产生相位编码目标回波、对回波进行I/Q解调、匹配滤波，分析多普勒频移对脉冲压缩的影响等。-This procedure for pulse compression radar echo generation and processing, including the generation of phase coded target echo, echo IQ demodulation, matched filtering, analysis of the
SST-DAB
- 基于移相全桥的双向DCDC变换器，并且有内移相角和外移相角的双重移向。试制的样机功率100W，效率最高90％(Bi-directional DCDC converter based on phase-shifted full-bridge, and has dual shift of internal phase angle and external phase angle. Trial prototype power 100W, the highest efficiency of 90%)
testbech
- FPGA 变频移相4路PWM波 已经成功应用到实验平台(FPGA frequency shift phase 4 PWM wave has been successfully applied to the experimental platform)
ZOOM-FFT算法
- ZOOM-FFT称为细化的快速傅立叶变换，又称为选带快速傅立叶变换。ZOOM-FFT的功能是对信号的频率进行局部细化放大，使感兴趣的频带获得较高的频率分辨率。实现FFT细化功能的算法有几种，如频移法-、相位补偿法和最大熵谱法等，目前应用最关的是频移法(ZOOM-FFT is called a thinned Fast Fourier Transform, also known as Fast Fourier Transform. The function of ZOOM-FFT is to pa
active filter
- In this paper, an efficient active power filter (APF) scheme is developed to estimate and compensate for harmonic distortion in an electrical power network. The developed APF control scheme is based on a double proportional feedback controller and a