A new data acquisition and processing system for UAVSAR

IEICE Electronics Express

Chee Siong Lim¹  Yee Kit Chan¹  Voon Chet Koo¹  Chot Hun Lim¹  Ming Yam Chua¹  Tien Sze Lim¹ 

[1] Faculty of Engineering & Technology, Multimedia University

关键词: UAVSAR;    modified discrete Fourier Transform;    DAQ;   

DOI  :  10.1587/elex.8.1716

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(6)Synthetic Aperture Radar (SAR) is widely known as a high resolution imaging system in microwave remote sensing. Large number of frequency-modulated received echoes must be acquired in real time. A typical SAR data acquisition unit (DAQ) involves high speed analog-to-digital conversion, front-end pre-processing, and data recording. Subsequent processes consist of computationally intensive digital signal processing for image formation. In this paper, an efficient data acquisition and SAR processing method is proposed. It is based on a modified discrete Fourier Transform algorithm, which requires lesser system's computational load as compared to conventional Fast Fourier Transform. The proposed system has been implemented on an UAVSAR (Unmanned Aerial Vehicle SAR) and the flight tests have shown promising results for real-time imaging.

【 授权许可】

Unknown