阵发混沌信号稳定输出及其准确测量研究  

Study on Stable Output of Intermittent Chaotic Signal and Accurate Measurement Thereof

作　　者：谢涛[1] 于重重[1] 伍英[1] 吴叶兰[1] 

机构地区：[1]北京工商大学计算机与信息工程学院,北京100048

出　　处：《计算机仿真》2015年第8期271-275,共5页Computer Simulation

摘　　要：针对混沌振子微弱信号检测系统中阵发混沌信号稳定输出的影响因素和阵发混沌信号准确测量问题进行研究。定义了响应步长作为衡量指标,利用数值仿真的方法对混沌振子检测系统响应微弱信号的过渡过程进行分析,获得了过渡过程中响应步长的概率分布及响应步长与初始轨迹点的对应关系。依据所获得的过渡过程分析结果,给出阵发混沌信号稳定输出的影响因素,指出之前研究工作中所普遍使用经验公式的局限性,进而提出可快速、准确测量阵发混沌信号的方法。This paper studied the effect factors of steady output for intermittent chaotic signals in chaotic oscillator based weak signal detection system and accurate t issue of intermittent chaotic signals. Response step was defined as the measurement index. With numerical simulation method, the transition process of responding weak sig- nal was analyzed. The probability distribution of response step during transition process was obtained, and the corre- spondence between initial track point and response step was derived. According to the analysis results, the effect fac- tors to ensure stable output of intermittent chaotic signal were given. The limitation of the existing formula commonly used currently was generated. On the basis, a method that can rapidly and accurately measure intermittent chaotic signals was proposed.

关 键 词：混沌振子 微弱信号检测 阵发混沌 过渡过程 

分 类 号：TN911.23[电子电信—通信与信息系统]