Speaker: Pingping Lu

Affiliation: Aerospace Information Research Institute；Chinese Academy of Sciences Associate Research Scientist

Academic title: Researcher

Abstract:

Phase synchronization plays a crucial role in the LuTan-1 bistatic synthetic aperture radar (BiSAR) system, as it aims to eliminate additional azimuthal phase modulation caused by oscillator differences. While radio frequency interference (RFI) is a major factor in deteriorating phase synchronization performance. To present the effect of RFI on the synchronization phase clearly, the synchronization phase errors caused by both narrowband interference and broadband interference are accurately derived. For narrowband RFIs, a novel pulse-compression-based notch (PCN) method is proposed to eliminate the phase error. As to complex interference types mixed with both narrowband and broadband interference, a phase synchronization scheme with multiple receiving channels and the corresponding blind identification diversity (BID) method are proposed to separate the useful synchronization signal. Experimental results derived from using simulated and real synchronization data of the LuTan-1 system validate the performance of both the proposed PCN method and synchronization scheme.

Biography:

Pingping Lu is an Associate Research Fellow with the National Key Lab of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences (AIRCAS), Beijing, China. She was a Post-Doctoral Researcher with the Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, USA, from 2018 to 2022. Her research interests include synthetic aperture radar (SAR) image interpretation, artificial intelligent, and radar countermeasures. Dr. Lu was the Session Chair at the International Geoscience and Remote Sensing Symposium (IGARSS) in 2022. She has been the editorial Board Member of the Journal of Radars and National Remote Sensing Bulletin since 2022.