Orbit frequency shift signal extraction method based on double-coupled oscillators

• Main Authors: SHA SHIWEI, HUANG XU, LIU ZHUODAN, ZHANG XUEFU, WANG YAO'AN, XI JIANING, LI YILIN, LIANG YING, ZHANG HAIDONG, CHEN ZHIYING, WEI ZIWEN
• Format: Patent
• Language: Chinese; English
• Published: 17.08.2021
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to an orbit frequency shift signal extraction method based on double-coupled oscillators, wherein the method comprises the steps: constructing double-coupled Duffing oscillator detection models, adjusting parameters of the two models to enable the models to be in critical chaos states respectively, and adding a frequency shift signal of which the frequency difference meets the condition to enable the models to output a discontinuous chaos state; performing time domain amplitude modulation on the models; according to the frequency characteristics of the frequency shift signal, constructing a driving force step length sequence capable of covering a frequency band in which the frequency shift signal is located; and according to the actual situation of a site, adding a noisy frequency shift signal into the double-coupled oscillator models, observing the output of the models along with the change of step length, and if the output of the models at two continuous step lengths is in an interval