An Improved Digital Chirp Generator Using Optimized Piecewise- Polynomial Approximations

Konferenz: EUSAR 2010 - 8th European Conference on Synthetic Aperture Radar
07.06.2010 - 10.06.2010 in Aachen, Germany

Tagungsband: EUSAR 2010

Seiten: 4Sprache: EnglischTyp: PDF

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Samarah, Ashraf; Loffeld, Otmar (ZESS Uni-Siegen, Germany)

This paper proposes a new technique to efficiently and extremely increase the performance of Pedersen’s digital chirp generator concerning the level of the Spurious-Free Dynamic Range (SFDR). The digital chirp generator uses the optimized piecewise-polynomial approximation to decrease the memory size and system complexity and excellent spectral performance in comparison with the other techniques.