基于频差控制的自适应频率检测研究  

Study of Adaptive Frequency Detection Based on Frequency Deviation Control

作　　者：徐艳春[1] 瞿晓东[1] 

机构地区：[1]黑龙江大学机电工程学院,哈尔滨150080

出　　处：《黑龙江大学工程学报》2011年第1期105-111,共7页Journal of Engineering of Heilongjiang University

基　　金：黑龙江省教育厅科学技术研究项目(11544035)

摘　　要：采用低阶Duffing混沌振子和高阶Rssler混沌控制相结合,提出基于频差控制的微弱光电信号自适应频率检测的新方法,该方法通过对待检信号的频率与周期策动力频率之间频差的控制,实现了两种混沌振子之间的自适应选择,从而提高了检测精度和检测速度。该方法突破了以往Duffing方程检测信号频率需要使用较多混沌振子的局限,同时,也克服了高阶Rossler混沌控制检测方法中存在的检测速度慢的缺点,利用频差控制实现两种混沌振子的自适应选择,实现了微弱光电信号的频率检测。通过数值仿真和实验研究,验证了该方法的有效性。The new method of weak photoelectric signal adaptive frequency detection based on frequency deviation control is presented.It combined low-order Duffing chaotic oscillator with high-order Rssler chaotic oscillator and realized the adaptive choice between two chaotic oscillators.The frequency deviation of unknown frequency and periodic frequency is controlled to detect useful frequency.So the detection precision is improved and detection speed is fasted.There is more advantage than Duffing equation used many chaotic oscillators.Meanwhile the low detection speed of high-order Rssler chaos control method is overcome.The frequency detection of weak photoelectric signal is realized through the adaptive choice between Duffing chaotic oscillator and Rssler chaotic oscillator.The effective of this method is verified through numerical simulation and experiment study.

关 键 词：混沌振子 微弱光电信号 频率检测 自适应控制 

分 类 号：TN911.23[电子电信—通信与信息系统]