中文摘要：

以混沌系统的参数敏感性和初值敏感性为基础,倒锯齿映射为模型,按照符号动力学原理,建立符号序列空间,计算待测初值和零点的轨道空间距离求得待测值.令恒流源对电容进行充放电,分析设计具体的混沌检测电路,成功地将倒锯齿映射应用到混沌微弱信号检测上.

英文摘要：

Based on the sensibility of the parameter and the initial value of chaotic system, the proposed method begins from inverted saw-tooth map and builds the symbolic sequence space according to symbolic dynamics. The measured value can be calculated by the space distance of two tracks including the initial value and the zero point. The constant current source is used to charge and discharge the capacitor, and the analysis and design of the chaotic detection circuit is applied to detect the weak signal.