摘要：

针对单个Duffing混沌系统的测距方法存在较大误差以及系统状态判定较复杂的问题，提出一种基于双Duffing耦合同步混沌系统的超声波测距方法。利用耦合同步混沌系统接收声波回波信号，根据同步系统输出信号的跳变与否判断是否接收到回波信号，以达到准确测距的目的。仿真实验结果表明，该方法能有效提高远距离、强噪声背景下回波信号的距离测量精度，并且系统状态判定简单，计算量小。

关键词: 超声波测距, 噪声, Duffing系统, 微弱信号, 耦合同步, 同步输出

Abstract:

The method of distance measurement system based on single Duffing system has large system error and determining system state is complex. Aiming at these problems, this paper proposes a novel method of ultrasonic distance measurement based on Duffing oscillator coupled synchronization system. It adopts the coupled synchronization system to receive the echo signal, and according to the output signal of the synchronization system hop or not to determine whether the echo signal arrives, so that the method can achieve accurate ranging. By using the system’s property of being immune to noise, it can not only reduce the effect of noise, but also improve the measuring distance, and determining system state is simple. Simulations are given to verify the feasibility of the proposed method.

Key words: ultrasonic distance measurement, noise, Duffing system, weak signal, coupled synchronization, synchronization output

中图分类号: 

• TP309.2