An Efficient Random Signal Generator
Zhihua He · Jisuanji fangzhen · 2010
In the simulations of radar and communication system,generating the stochastic series with the designated power spectrum is frequently required to evalue the system performance,and which demands that this stochastic series is of good characteristic and efficiency.AS the routine linear alternation matrix involves millions or even go so far as to billions of unknown quantity ago,so it has the tremendous calculative task,and it is inefficient and uneconomic.An new efficient algorithm for generating stochastic series with designated power spectrum by computer software is introduced in this paper for the shortcoming of it,which has improved the independence and uniformity of the series by shuffle algorithm.With cut-offing the correlation function and simplifyiing the transform matrix the compution is reduced greatly,and the efficiency is raised o lot.The power spectrum of the simulated the stochastic series approaches the standard power spectrum very much by the simulating result,and their bandwidth is identical in the main.The result of the computer simulation about the nonlinear random vibration of the motor is close to the objective reality.Their error is smaller than five percent,the efficiency advances nearly forty percent.The new validnes of the algorithm is convinced by the simulating results.