随机过程的白噪声功率谱及工况诊断

The Power Spectrum of White Noise and the Diagnosis of Work Conditions in the Random Process

工程中常遇到各类噪声信号,噪声存在于电子设备和系统中,它经常妨害长距离通信和检测弱信号的能力。随机数发生器被用来仿真物理世界中常遇到各类噪声信号和其它随机现象,通过产生这样的噪声,可用MATLAB仿真通信系统来研究这种噪声对系统的影响,并评价噪声存在的情况下系统的性能。

The abilities of long distance communication and weak signal detection are deteriorated by various white noises existing in the electronic instruments and system. Many kinds of white noise and random phenomenon in the fields of physics are uaually emulated by means of random number generator. Using this kind of simulation, the effects of white noises on communication system can be simulated interms of MATLAB to evaluate the performances of the communication system under the conditions of the white noise.