文件中的是matlab程序，主要使用与UWB系统，主要作用是产生固定持续时间的正弦脉冲-File is the matlab program, the main use of the UWB system, the main role is to produce a fixed duration sinusoidal pulse

matlab程序，产生了一个直接序列扩频信号，主要用于UWB系统中，注释非常详细-matlab program, resulting in a direct sequence spread spectrum signal, mainly for UWB systems, very detailed notes

matlab程序，运行程序，产生多频带超宽带信号，在UWB系统中应用较广泛。-matlab program, run the program, resulting in multi-band ultra-wideband signals in the UWB system applied more widely.