backward_forward_sweep_3

说明：  用matlab来实现扩频通信仿真 很完整的仿真过程(Spread spectrum communication using matlab to achieve a very complete simulation of the process simulation)

基于电抗加载的单通道五元多波束扫描天线阵设计方法研究(Based reactance loaded single five yuan multi-beam scanning antenna array design method)

直接序列扩频（Direct Sequence Spread Spectrum）工作方式，简称直扩方式（DS方式）。就是用高速率的扩频序列在发射端扩展信号的频谱，而在接收端用相同的扩频码序列进行解扩，把展开的扩频信号还原成原来的信号。(irect Sequence Spread Spectrum (Direct Sequence Spread Spectrum), hereinafter referred to as Direct expansion mode (DS). Is a high rate of spread spectrum sequence extension in signal spectrum, and at the receiving end with the same spread spectrum code sequence for expansion, the expansion of the spread spectrum signal back into the original signal. )

matlab下编写的谱相减函数，用作语音增强(prepared under matlab spectral subtraction function, used for speech enhancement)

神经网络工具包，安装在MATLAB中，使用神经网络计算时需要安装，可以调用其中的函数(Neural network toolkit, installed in the MATLAB, the use of neural network calculation need to install, you can call the function)

Cursor Window extends SQLiteClosable implements Parcelable.

matlab程序滤波器,有IIR各种滤波器，可以实现低通，高通，带通，带阻等滤波器(matlab program filters, there are various IIR filters can achieve a low pass, high pass, band pass, band stop filter)

对地面点目标进行跟踪，适用于SAR正侧视成像，不适合斜视情况下跟踪(Target tracking point on the ground)

利用MATLAB7.0与VC6.0联合编程，通过com组件实现了二维曲线，非常好，保证没错误(VC6.0 joint programming with the use of MATLAB7.0 by com component implements two-dimensional curve, very good, to ensure no errors)

this m.file produces channel coefficient with some error, in which the estimation error follows a random variable with zero mean and variance of MSE. lat is the latitude of BS places at different cells which is used to determine the number of BSs in the networks