Abstract
Pseudo-random signal, also known as pseudo-random code, which has statistical properties similar to random signal and can be repeatedly generated, so it is widely used in the field of signal transmission. Pseudo-random code is used as the carrier of an improved high-density electromagnetic system to improve the reliability and stability of the measurement. However, how to effectively extract the effective signal in the pseudo-random code is very important.In this paper, a method based on Discrete Fourier Transform (DFT) is proposed to extract effective signal from pseudo-random code. By analyzing the amplitude-frequency characteristics of the discrete spectrum of pseudo-random code, the search range of frequency bands can be narrowed. Find the maximum of a one-dimensional array to obtain the best estimate of the target frequency and its magnitude in the limited range of frequency bands. Simulation experiments and measured data show that the frequency data extracted by the method in this paper is highly consistent with the preset frequency, with little amplitude loss and less alias. Therefore, the method can extract the response information of the specified frequency contained in the pseudo-random code effectively with high efficiency.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
