《计算机应用研究》|Application Research of Computers

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

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作者 郑皓洲,胡进峰,刘立东,何子述
机构 电子科技大学 电子工程学院,成都 611731
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文章编号 1001-3695(2011)01-0069-03
DOI 10.3969/j.issn.1001-3695.2011.01.017
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。
关键词 测距;相位;同步;抗噪声
基金项目 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)
本文URL http://www.arocmag.com/article/1001-3695(2011)01-0069-03.html
英文标题 Study on novel method of distance measurement based on chaos synchronization
作者英文名 ZHENG Hao-zhou, HU Jin-feng, LIU Li-dong, HE Zi-shu
机构英文名 School of Electronic Engineering, University of Electronic Science & Technology of China, Chengdu 611731, China
英文摘要 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.
英文关键词 distance measurement; phases; synchronization; noise robust
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