时频分析，一个频率为100的正弦信号做WVD时频分析,做出图后有两个频率(100Hz和400Hz)-Time-frequency analysis, a sinusoidal signal with a frequency of 100 do WVD time-frequency analysis, make a diagram after the two frequencies (100Hz and 400Hz)

波束形成，一均匀排列的5元线阵，阵元间距15cm。设入射信号为单凭正弦波，幅度为Acos(wt)。声速设为c=1500m/s.在入射信号频率f为4k、5k、6k时，求以下三种加权系数下的波束图。 1）均匀加权时的波束图，入射信号范围-90°~90°，幅度归一化处理,下图。 2）阵元加权系数为[1,2,4,2,1] 3) 阵元加权系数为[4,2,1,2,4] -Beamforming, an arrangement of five yuan uniform linear arr

在quartus上制作一个稳定的正弦波信号并用显示屏显示出来，可显示频率-In quartus produced on a stable sine wave signal and use screen displayed, you can display the frequency

用牛顿迭代法估计正弦信号的幅度，相位，频率，选用多次montecalor算法估计参数均值，并与理论上参数估计的CRLB下限进行比较。-Newton iterative method estimates the sinusoidal signal amplitude, phase, frequency, use multiple montecalor algorithm to estimate the parameters mean, and with the theoretical limit