plot-histgram

Image transformation by using fft

现行调频生成函数，直接运行即可，运行后可以生成LFM信号，并给出幅度频率图(FM existing generating function, can be directly run, run after the LFM signal can be generated, and gives the frequency range of Figure)

采用直接序列扩频技术的BPSK接收机matlAB仿真，内含说明。(This is a code for simulation of BPSK receiver using Direct Sequence Spread Spectrum. The performnace is evaluated in presence of AWGN and Rayleigh fading.Jakes Model has been used to obtained coefficients for rayleigh fading.)

高斯积分，可以实现任意区域上的平面二重积分，可以带有参数。精确度高，希望对大家有用！(Gaussian integration can be achieved on any area of ​ ​ the plane of the double integral with parameters. Accuracy, we hope to useful!)

刘宝碇不确定理论的Matlab工具箱 (Matlab toolbox anchor Liu uncertain theory)

测量氨水的气体浓度（由平均阻值和平均电压来表示），它受到环境湿度和加热电压的影响。(Measurement of ammonia gas concentration (from an average resistance and average voltage to that), it is affected by environmental humidity and the heating voltage.)

code of multivariable optimization by yang

说明：  2019年第16届华为杯数学建模F题第二问的代码(Code for the second question of mathematical modeling F of the 16th Huawei cup in 2019)

this function block an Arbitrary image and take dct from each block. for check quality of reconstructed image calculated PSNR.

对线性系统和非线性系统进行的仿真，使之能在较逼真的建模(Of linear systems and nonlinear systems of simulation, so in a more realistic modeling)