摘要
针对当前白噪声发生器生成的白噪声不白,即功率谱分布范围窄和能量分布不均匀的问题,以AT89C516单片机和DAC0832数/模转换芯片为硬件平台设计白噪声发生器,该发生器通过对存储于程序存储空间的伪随机序列片段的随机重排拓宽噪声的频谱范围,增强其随机性,以获得理想的白噪声。试验结果表明,该噪声发生器生成的白噪声性能良好。
Considering the narrow power spectrum and uneven energy distribution of present white noise generator,a new white noise generator based on AT89C516 MCU and DAC0832 D/A converter chip was designed to randomly rearrange pseudo-random sequence fragments in program storage space,and to broaden noise spectrum scope and to enhance its randomness so as to obtain ideal white noise.Experiment results prove the good white noise performance generated by the white noise generator.
出处
《化工自动化及仪表》
CAS
2012年第2期246-249,267,共5页
Control and Instruments in Chemical Industry
基金
陕西省科技攻关项目(2011K06-06)
陕西省教育厅专项科研计划项目(2010JK420)
陕西科技大学科研启动基金资助项目(BJ10-05)
陕西科技大学学术骨干培育计划项目(2010)
