frft

抑制载波双边带调幅和解调的实现, Matlab代码编写实现. 采用Matlab或者其它软件工具实现对信号进行抑制载波双边带调幅（DSB-SC）和解调，并且绘制： （1）信号 及其频谱； （2）载波 ； （3）DSB-SC调制信号及其频谱； （4）DSB-SC调制信号的功率谱密度； （5）相干解调后的信号波形。 (Carrier suppression bilateral with the realization of amplitude modulation and demodulation, Matlab code prepared to achieve. Using Matlab or other software tools to achieve suppression of signals with carrier bilateral AM (DSB-SC) and demodulation, and mapping: (1) signal and its spectrum ( 2) Carrier (3) DSB-SC modulated signal and its spectrum (4) DSB-SC modulation signal power spectral density (5) coherent demodulation signal waveform.)

仿真高强度聚焦超声（HIFU）治疗生物组织温度场的二维分布情况(simulate the High intensity focused ultrasound (HIFU) in treatment of two-dimensional distribution of temperature field in biological tissue)

对于周期图的功率谱估计,当数据长度N太大时,谱曲线起伏加剧, 若N太小,谱的分辨率又不好,因此需要改进。两种改进的估计法是 平均周期图法和平滑平均周期图法。Bartlett法:Bartlett平均周期图 的方法是将N点的有限长序列x(n)分段求周期图再平均。(For the power spectrum estimation of the periodogram, when the data length N is too large, the spectral curve fluctuation intensifies,   If N is too small, the spectral resolution is not good, so need to be improved. The two improved estimates are   Average Period Graph and Smooth Mean Period Graph. Bartlett method: Bartlett average cycle chart   Is to re-average the finite-length sequence x (n) of N points by periodogram.)

The study documents the famous 3D engine for 3D developers learn to use.

可用来测试智能优化算法性能，例如粒子群优化算法，人工蜂群算法等。(It can be used to test the performance of intelligent optimization algorithm, such as particle swarm optimization algorithm, artificial swarm algorithm, etc.)

BPSK的想干解调，并画出误码率与理论曲线比较(BPSK demodulation of the wanted to do, and draw the bit error rate compared with the theoretical curve)

说明：  高等应用数学问题matlab求解，包括例题的全部代码 很适用的 (Matlab solving the problem of Higher Mathematics, including examples of all the code is applicable)

北斗二代B1频点接收机主程序Matlab源代码(BD2B1 Matalab Receiver)

matlab实用程序百例源码，非常适合matlab初学者(matlab utility hundred cases of source, very suitable for beginners matlab)

将示波器CSV文件在MATLAB中画成图形,并进行FFT(input the .csv file of scope into matlab)