测试科学与仪器2021，Vol.12Issue(3)：281-286,6.DOI:10.3969/j.issn.1674-8042.2021.03.005
Lyapunov指数算法在应答器信号混沌振子检测中的应用
Application of Lyapunov exponent algorithm in balise signal chaotic oscillator detection
摘要
Abstract
To improve the detection accuracy of the balise uplink signal transmitted in a strong noise environment,we use chaotic oscillator to detect the balise uplink signal based on the characteristics of the chaotic system that is sensitive to initial conditions and immune to noise.Combining with the principle of Duffing oscillator system used in weak signal detection and uplink signal feature,the methods and steps of using Duffing oscillator to detect the balise signal are presented.Furthermore,the Lyapunov exponent algorithm is used to calculate the critical threshold of the Duffing oscillator detection system.Thus,the output states of the system can be quantitatively judged to achieve demodulation of the balise signal.The simulation results show that the chaotic oscillator detection method for balise signal based on Lyapunov exponent algorithm not only improves the accuracy and efficiency of threshold setting,but also ensures the reliability of balise signal detection.关键词
Duffing振子/Lyapunov指数/Jacobian法/小数据量法/应答器上行链路信号Key words
Duffing oscillator/Lyapunov exponent/Jacobian algorithm/small data sets/balise uplink signal引用本文复制引用
张宏雁,王瑞峰..Lyapunov指数算法在应答器信号混沌振子检测中的应用[J].测试科学与仪器,2021,12(3):281-286,6.基金项目
National Natural Science Foundation of China(No.61763025) （No.61763025）
