An Ultra Wideband Impulse Optoelectronic Radar : RUGBI

Michèle Lalande (1) , Jean-Christophe Diot (1) , Stéphane Vauchamp (1) , Joël Andrieu (1) , Vadim Bertrand (2) , Bruno Beillard (1) , Bertrand Vergne , Vincent Couderc (3) , Alain Barthélémy (3) , D. Gontier (4) , R. Guillerey (5) , M. Brishoual (6)

1 OSA
2 CISTEME - Centre d'Ingénierie des Systèmes en Télécommunication, en ÉlectroMagnétisme et en Electronique
3 PHOTONIQUE
4 CEA - Commissariat à l'Energie Atomique
5 DGA/CELAR
6 DGA SPART

An ultra wideband radar system based on a coherent emission of an ultra-wideband antenna array using photoconductive switching devices is proposed. The triggering process is obtained by the excitation of semiconductor samples in linear mode using a picosecond laser source. The emitting antenna system and the receiving antenna developed by the Research Institute XLIM present some specific qualities suitable for radiation and measurement of ultrashort pulses. The optical control of the sources allows to sum the radiated power and to steer the transient radiation beam accurately. The experiments realized with this optoelectronic array validate these two concepts. Another way of improving these systems is proposed. It involves using bipolar pulse generators.

Domaines: Sciences de l'ingénieur [physics]; Optique / photonique

Michèle Lalande, Jean-Christophe Diot, Stéphane Vauchamp, Joël Andrieu, Vadim Bertrand, et al.. An Ultra Wideband Impulse Optoelectronic Radar : RUGBI. Progress in Electromagnetic Research B, 2009, 11, pp.205-222. ⟨hal-00450401⟩