Design of an Integrated System for Spaceborne SAR Imaging and Data Transmission

Qixing Wang ^1,2, Peng Gao ³, Zhuochen Xie ²

⁰School of Information Science and Technology, ShanghaiTech University, Shanghai 200120, China.

Sensors (basel, Switzerland) +

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October 16, 2024

View abstract on PubMed

Summary

This study introduces an integrated sensing and communication system for real-time satellite imaging. The novel approach enhances synthetic aperture radar (SAR) performance and data transmission rates for mobile users.

Area Of Science

Satellite Technology
Signal Processing
Wireless Communication

Background

Conflicting demands exist between real-time satellite communication and high-resolution synthetic aperture radar (SAR) imaging.
Mobile terminals require access to real-time SAR data without relying on ground stations.

Purpose Of The Study

To develop a method aligning data transmission rates with imaging data volume for balanced SAR performance.
To create an integrated sensing and communication system for mobile SAR data access.

Main Methods

Developed an application system using filter bank multicarrier offset quadrature amplitude modulation (FBMC-OQAM).
Designed a signal sequence for spaceborne SAR echo and data transmission/reception to mitigate interference.
Enabled shared frequency bands, RF systems, and antennas for SAR and data transmission signals.

Main Results

Achieved an integrated sensing and communication system.
Improved echo image signal-to-noise ratio (SNR) by 2.79 dB compared to equal power allocation.
Increased data transmission rate by 24.075 Mbps.

Conclusions

The proposed method effectively balances SAR performance and real-time data transmission requirements.
The integrated system enhances mobile access to real-time SAR imagery.
Simulation results demonstrate significant improvements in SNR and data transmission rates.

Keywords:

data transmission filter bank multicarrier integrated sensing and communication optimal design synthetic aperture radar