IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
A new data acquisition and processing system for UAVSAR
Chot Hun LimChee Siong LimMing Yam ChuaYee Kit ChanTien Sze LimVoon Chet Koo
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2011 Volume 8 Issue 20 Pages 1716-1722


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.

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© 2011 by The Institute of Electronics, Information and Communication Engineers
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