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A Development of DDS Based Chirp Signal Generator and X-Band Transmitter-Receiver for Small SAR Sensor

DDS 기반의 소형 SAR 시스템 송수신장비 개발

  • Received : 2015.10.21
  • Accepted : 2016.02.04
  • Published : 2016.03.31

Abstract

UAVs(Unmanned Aerial Vehicle) can be used in variant fields fornot only combat, but also recon, observation and exploration. Moreover, UAVs capacity can be expanded to impossible missions for existing surveillance system such as SAR(Synthetic Aperture Radar) technology that collecting images from all weather conditions. In recent days, with development of highly efficient IC and lightened system technology, there are significant increase of researches and demands to make SAR sensor as a payload of UAV. Therefore, this paper contains development process and results of small signal generator and RF device as a core module of SAR system based on the digital device of DDS.

Keywords

Unmanned Aerial Vehicle;SAR;Chirp Pulse;Direct Digital Synthesizer;FPGA

References

  1. M. Y. Chua, V. C. Koo, "FPGA-based chirp generator for high resolution UAV SAR", Progress in Electro Magnetics Research, vol. 2, pp. 27-60, 2008.
  2. J. E. Gonzalez, J. M. Pardo, A. A. Sensio, and M. Burgos, "Digital signal generation for LFM-LPI radars", Electronics Letters, vol. 39, no. 5, pp. 464-465, Mar. 2003. https://doi.org/10.1049/el:20030316
  3. 이현택, "DDS를 이용한 주파수 합성기 설계 및 그 성능평가에 관한 연구", 한국전자통신학회논문지, 7(2), pp. 333-339, 2012년 4월.

Acknowledgement

Supported by : 한국항공대학교, (주)에스아이에스(SIIS)