Title :
Mathematical analysis of true time delay for optical beam steering in laser radar
Author :
Srinivas, T. ; Shanbhag, Ganesh ; Vishwanath, Varsha
Author_Institution :
ECE Dept, Indian Inst. of Sci., Bangalore, India
Abstract :
Optical beam steering is very essential for efficient and faster imaging of the environment using radars for both commercial and defensive purposes. Very often this is implemented in mechanical domain, which leads to numerous shortcomings like limited lifetime, electro-magnetic effects etc. To get continuous beam angle control, we use electro-optic effect. In the electro-optic waveguide approach, 1D linear arrays of electro-optic curved, variable length waveguides were harnessed for beam steering. For fusion of microwave and optical domains proper down and up conversion is essential. Here a true time delay is implemented and unique optical splitter is also designed. In addition optimization of electrode has been proven here with brief study of different noise effects.
Keywords :
beam steering; electro-optical effects; linear antenna arrays; mathematical analysis; optical radar; radar imaging; continuous beam angle control; electro-optic effect; electro-optic waveguide; electrode; laser radar; linear arrays; mathematical analysis; noise effect; optical beam steering; optical splitter; radar imaging; time delay; Delay effects; Laser beams; Laser radar; Mathematical analysis; Mechanical variables control; Optical beams; Optical imaging; Optical noise; Optical waveguides; Radar imaging;
Conference_Titel :
Antennas & Propagation Conference, 2009. LAPC 2009. Loughborough
Conference_Location :
Loughborough
Print_ISBN :
978-1-4244-2720-8
Electronic_ISBN :
978-1-4244-2721-5
DOI :
10.1109/LAPC.2009.5352526