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Matlab Code for directivity of Antennas

信号与系统方面matlab实验仿真，能很好的指导初学者入门(Signal systems Matlab simulation experiments can be a good guide for beginners Getting Started)

This programme can generate signals of five different radars which contains noise.

在机械故障中，对包含故障频率的某一段频率进行细化分析，从而得到更准确地故障频率(In mechanical failure, the failure frequency contains a section for detailed frequency analysis to obtain a more accurate fault frequencies)

JSONArray的使用 附带程序注释与输出(JSONArray use with program notes and output)

对目标的运动进行了卡尔曼滤波跟踪，此程序的特点是进行了三维仿真(Kalman filter tracking the movement of the target, the characteristics of this program is a three-dimensional simulation)

POS inventory system

Ensemble修改程序，包括源程序和调用程序及实例。(Ensemble modify the program, including the source and call procedures and examples.)

RADAR scateriing using pulse compression principle

说明：  根据语音信号的特点给出有关滤波器的性能指标：1）低通滤波器性能指标，fp=1000Hz，fc=1200 Hz， As=100dB，Ap=1dB；2）高通滤波器性能指标，fc=2800 Hz，fp=3000 Hz As=100dB，Ap=1dB；3）带通滤波器性能指标，fp1=1200 Hz，fp2=3000 Hz，fc1=1000 Hz，fc2=3200 Hz，As=100dB，Ap=1dB。用IIR对其分析，最后，利用MATLAB中的函数freqz画出各滤波器的频率响应。(This article according to the IIR filter and the FIR filter characteristic, uses the bilinearity method of transformation under the MATLAB bad boundary to design IIR and to design the FIR numeral filter separately with the window box number, and carries on the analysis to the gathering pronunciation signal, and finally gives IIR and FIR to the pronunciation filter effect.)