基于混沌同步的新型测距算法研究  

Study on novel method of distance measurement based on chaos synchronization

作　　者：郑皓洲[1] 胡进峰[1] 刘立东[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：《计算机应用研究》2011年第1期69-71,共3页Application Research of Computers

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

摘　　要：基于chuas混沌系统的混沌雷达测距方法对噪声比较敏感,针对该问题,提出基于Colpitts新型混沌雷达测距方法。在发射端,发射正弦信号调制的混沌信号,接收端通过混沌同步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相位,从而测出目标距离信息。此外,通过Hilbert变换,进一步提出了测距改进方法。最后,与基于chuas的测距方法相比,该方法抗噪声能力强,测距精度得到了提高。仿真结果验证了上述方法的有效性。The method of distance measurement of chaotic radar based on chuas chaotic system was sensitive to noise. To resolve this problem, this paper proposed a novel method of distance measurement based on Colpitts. This method launched the chaotic signal modulated by a sinusoidal signal at the transmitter, then the sinusoidal signal with range information would be recovery after synchronization at the receiver, so it could measure range information through comparing the phases of two sinusoidal signals. Besides,presented an improved method of distance measurement through Hilbert transforms. Finally, the proposed method has better noise robust ability and high ranging precision than that of chuas. Numerical simulations are given to verify the effectiveness of the proposed methods.

关 键 词：测距 相位 同步 抗噪声 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]