on-ground-based-gps

产生64QAM基带通信系统发射机：基带成型滤波采用3种方式（1）采用每个符号调制一个成型滤波函数，然后将各个函数进行时域叠加的方法； （2）采用信号与低通滤波器响应函数卷积的方法；（3） matlab自带的升余弦函数(Produce 64QAM baseband communication system transmitter: baseband shaping filter uses three ways (1) the use of a molding each symbol modulation filter function, and then each time domain overlay function (2) the use of signals and low-pass filter response function convolution method (3) matlab comes with a raised cosine function)

Queen problem is solved

kalman源程序。用MATLAB编制。主要用于统计预测，也可用于其他行业。(kalman program for prediction.)

说明：  波束调向直线阵 边射阵和端射阵是一般调向直线阵的特例(Beam transfer line array broadside to the array and end-fire array is generally transferred to the special case of linear array)

复件 Park_tran- Park变换Clark变换及逆变换模型(Copies Park_tran-Park Transformation Clark transform and inverse transform model)

胡广书 数字信号处理-理论,算法与实现的书中源程序 matlab版本(HU-book Digital Signal Processing- theory, algorithms and implementation of matlab C language source book fortran three versions)

kaiser window technique

北京工业大学的matlab课件! 北京工业大学的matlab课件! 北京工业大学的matlab课件!(Beijing Industrial University of Matlab courseware! Beijing Industry University of Matlab courseware! Beijing Industrial University of matla b courseware!)

实现扩频里随机信号和伪码序列的产生，以及关于生成扩频序列的MATLAB程序，并用载波信号实现2PSK调制(Spread spectrum signal generated in the realization and pseudo random code sequence, and generate MATLAB program about spreading sequences and modulated carrier signal to achieve 2PSK)

小波降噪、时频分析等方法，系统地研究航天电子设备多余物噪声检测过程中各操作变量和微粒物理参数对声波频谱的影响。通过单因素试验，详细分析了微粒粒径、振动力学条件中加速度和频率等3因素对声音信号频谱分布的影响规律，比较了短时傅里叶变换和小波变换的特点。该结果为进一步识别多余物微粒的参数提供了指导依据(the complexity of the material interaction and the properties of the particles themselves make the received signal difficult to analyse. This paper based on particle collision sound wave mechanism, using the methods of wavelet de-noising, time-frequency analysis and so on, this paper systematically studies the influence of various operating variables and particle physics parameters on the sound spectrum in the process of detecting the noise of aerospace electronic equipment. Through the single factor test, the influences of the three factors such as acceleration and frequency on the spectral distribution of the sound signal are analyse in detail, and the characteristics of the short-time Fourier transform and the wavelet transform are compared. The result provides a guideline for further identification of the parameters of the extraneous particles.)