Design of Integrated Communication and Remote Sensing in LEO Satellite Systems

In this paper, we investigate the integration of communication and synthetic aperture radar (SAR)-based remote sensing in low Earth orbit (LEO) satellite systems. To address the high-mobility characteristic of LEO satellites, we propose an integrated system architecture based on an orthogonal delay-Doppler division multiplexing (ODDM) signal waveform. Specifically, we provide a wireless frame compatible with the 5G NR standard for signal sharing and design a unified channel sensing scheme that utilizes shared ODDM signals for both channel estimation in communication and interference-free range reconstruction in SAR imaging. Finally, numerical simulation results confirm the effectiveness of the proposed scheme.

Design of Integrated Communication and Remote Sensing in LEO Satellite Systems

Yichao Xu, Xiaoming Chen, Ming Ying, Zhaoyang Zhang, Zhejiang University