Title :
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
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;
Conference_Titel :
Radar Conference, 2008. EuRAD 2008. European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-009-5
