GPS单点定位

说明：  可用于接收端天线对接收信号的检测，也就是信号检测，只需要输入参数就可以使用(It can be used for receiving antenna to detect the received signal, that is, signal detection, only need input parameters can be used.)

数字信号处理文档：在matlab下，对音频信号，图像信号以及视频信号的采集和处理。(Digital signal processing document: In matlab, the audio signal, the image signal and the video signal acquisition and processing.)

说明：  较新的优化算法，麻雀算法优化BP神经网络权值与阈值；(the key parameters of BP are choosed automatically by Sparrow Search Algorithm.)

利用六种（SO2、NO2、CO、O3、PM10、PM2.5）污染物浓度数据计算空气质量AQI值(Calculating air quality AQI value by using six kinds of pollutants concentration data of SO2, NO2, CO, O3, PM10 and PM2.5)

说明：  进行FDOA频差定位的程序，计算GDOP(Carry out FDOA frequency difference positioning program and calculate GDOP)

关于通信系统的simulink仿真，包括基本介绍，数字信号传输，信道编码，OFDM方式，MIMO系统仿真(On the communication system simulink simulation, including a basic introduction to digital signal transmission, channel coding, OFDM mode, MIMO system simulation)

64QAM调制gray码映射在高斯信道下的误比特率和理论误比特率(64QAM modulation gray code mapping in Gaussian channel bit error rate and the theoretical bit error rate)

说明：  GPS信号频谱，matlab语言，里面有CA码和P码的子文件，最后将各信号频谱画出来。(GPS signal spectrum, MATLAB language, there are ca code and P code sub file, finally the signal spectrum will be drawn.)

这是一个nnsc的代码，我从O。Hoyer的个人主页上下载的，应该有用吧(nnsc )

a leach program for energy efficient network