computegradient

70 watt transistorlu amfi devresi bd911 bd912.

butterworth bandpass filter design

说明：  FDTD，计算二维光子晶体，能量变化，速度非常快(FDTD, calculated two-dimensional photonic crystal, the energy changes very fast)

power_seriesbranch,功率电子领域matlab仿真文件，已经验证过，程序运行正常( power_seriesbranch,Power electronics field matlab simulation file, has already been verified, the normal operating procedures)

采用FSK调制方式，用于仿真高斯噪声、单音干扰等多种干扰环境下跳频系统性能及误码率(FSK modulation, frequency hopping system performance and bit error rate for the simulation of Gaussian noise, single tone jamming and other interference environment)

This letter presents a novel algorithm to compute the instantaneous frequency (IF) of a multicomponent nonstationary signal using a combination of fractional spectrograms (FS). A high resolution time frequency distribution (TFD) is defined by com-bining FS computed using windows of varying lengths and chirp rates. The IF of individual signal components is then computed by applying a peak detection and component extraction procedure

MATLAB环境下的Simulink仿真平台，构建PCM编码与解码电路图，对模拟信号进行采样、量化、编码, 将编码后的信号输入信道再进行PCM解码，还原出原信号.建立仿真模型,分析仿真波形。(MATLAB environment Simulink simulation platform to build PCM encoding and decoding circuit diagram of the analog signal is sampled, quantization, encoding, the encoded signal input letter Road and then the PCM decoding, restore the original signal. Establish simulation model, analyze simulation waveforms.)

说明：  sift算法在matlab代码。对学习sift算法有很大帮助(sift algorithm in matlab code. Sift algorithm for learning a great help)

同过编制matlab程序，读取数字地震仪的sgy数据格式。(Over the same preparation matlab program to read digital seismograph sgy data format.)

线性调频信号的仿真。很好的东东赶紧下载。仿真效果很好的(chirp_sig simulation)