Doppler code offset estimation method suitable for high dynamic scene

• Main Author: CHEN JINGQIAO
• Format: Patent
• Language: Chinese; English
• Published: 04.11.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MULTIPLEX COMMUNICATION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a Doppler code offset estimation method suitable for a high-dynamic scene, and relates to the technical field of high-dynamic synchronization in a communication system. The method comprises the steps of low-pass filtering, sampling rate conversion, timing error estimation, difference calculation, code offset calculation and the like, a Doppler code offset estimation function in a high dynamic scene can be realized, a basis is provided for clock frequency compensation, and the synchronization problem of a receiver in a high dynamic state is solved. The method is suitable for phase modulation and amplitude modulation and phase modulation signals at any rate in communication, does not need auxiliary information such as pilot frequency, can perform Doppler code bias blind estimation on random signals, can adapt to any Doppler size, and is particularly suitable for a high dynamic scene of a communication system. 本发明公开了一种适用于高动态场景的多普勒码偏估计方法，涉及通信系统中的高动态同步技术领域。本发明包括低通滤波、采样率变换、定时误差估计、差值计算、码偏计算等步