基于Colpitts混沌系统的新型测距算法研究  

A Novel Method of Distance Measurement Based on Colpitts Chaotic System

作　　者：郑皓洲[1] 胡进峰[1] 何子述[1] 

机构地区：[1]电子科技大学电子工程学院,成都611731

出　　处：《中国电子科学研究院学报》2010年第5期527-531,共5页Journal of China Academy of Electronics and Information Technology

基　　金：国防预研基金(9140A07011609DZ0216);博士点基金(200806141026);中央高校基本科研业务费专项资金(ZYGX2009J011)

摘　　要：Chuas混沌同步对噪声比较敏感,导致同步抗噪声能力不理想。为解决这个问题,文中提出采用Colpitts混沌系统作为新型测距算法的研究对象。该算法发射带有正弦信号的混沌信号,混沌同步后,恢复出带有距离信息的正弦信号,通过比较两个正弦信号的初始相位,从而测出目标距离信息。与Chuas相比,Colpitts同步具有较好的单调性和抗噪声能力强的优点,仿真结果验证上述方法的有效性。Chuas chaos synchronization is very sensitive to noise,so it reduces the synchronization noise robust ability.To solve this problem,the Colpitts chaotic system is proposed for a novel algorithm of distance measurement.The system emits chaotic signals with sinusoidal signal,and the sinusoidal signal with range information will be recovered after chaos synchronization,so the range information can be measured by comparing the initial phases of the two sinusoidal signals.Simulation results show that the Colpitts chaos synchronization has better monotonicity and noise robust ability than the Chuas method.

关 键 词：测距 混沌同步 抗噪声能力 

分 类 号：TN953.2[电子电信—信号与信息处理]