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Progress In Electromagnetics Research
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FPGA-BASED CHIRP GENERATOR FOR HIGH RESOLUTION UAV SAR

By M. Y. Chua and V. C. Koo

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Abstract:
This paper discusses the design and development of a FPGA-based chirp generator for high resolution Unmanned Aerial Vehicle (UAV) Synthetic Aperture Radar. The desired bandwidth of the chirp signal is 100 MHz (combination of I and Q channels) with a chirp rate of 5 MHz/μs. Two algorithms based on the Memory-based architecture and the Direct Digital Synthesizer (DDS) architecture are presented. The measurement results indicate that the DDS chirp generator is a preferred choice for high-resolution SAR application.

Citation:
M. Y. Chua and V. C. Koo, " FPGA - based chirp generator for high resolution UAV SAR ," Progress In Electromagnetics Research, Vol. 99, 71-88, 2009.
doi:10.2528/PIER09100301
http://www.jpier.org/PIER/pier.php?paper=09100301

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