Wideband arbitrary waveform generator for enhanced spaceborne SAR

Author

Salerno, N. ; Simone, L. ; Cocchi, S. ; Piloni, V. ; Maffei, M. ; Cocciolillo, O.

Author_Institution

Thales Alenia Space Italia S.p.A., Roma

fYear

2008

fDate

30-31 Oct. 2008

Firstpage

416

Lastpage

419

Abstract

The paper presents a digital waveform generator for spaceborne applications capable of synthesizing a wide band signal with a high spectral purity and a flexible configuration capability from pulse to pulse. A parallelized processing architecture is employed to overcome space qualified ASICs clock limits. The baseband generator synthesizes linear and non-linear chirps from DC to 500 MHz. Signal phase and amplitude digital compensation is allowed in both time and frequency domain. Finally the generator is provided with frequency hopping and PSK modulation capabilities.

Keywords

application specific integrated circuits; frequency-domain analysis; phase shift keying; spaceborne radar; synthetic aperture radar; waveform generators; ASIC clock limits; PSK modulation; baseband generator synthesis; digital waveform generator; frequency domain; frequency hopping; nonlinear chirps; spaceborne SAR; wide band signal; wideband arbitrary waveform generator; Chirp; Clocks; Frequency; Radar cross section; Signal generators; Signal synthesis; Space technology; Spaceborne radar; Synthetic aperture radar; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Conference, 2008. EuRAD 2008. European

Conference_Location

Amsterdam

Print_ISBN

978-2-87487-009-5

Type

conf

Filename

4760890