An all-optronic synthetic aperture lidar

Simon Turbide; Linda Marchese; Marc Terroux; François Babin; Alain Bergeron

doi:10.1117/12.974754

19 November 2012 An all-optronic synthetic aperture lidar

Simon Turbide, Linda Marchese, Marc Terroux, François Babin, Alain Bergeron

Proceedings Volume 8542, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI; 854213 (2012) https://doi.org/10.1117/12.974754
Event: SPIE Security + Defence, 2012, Edinburgh, United Kingdom

Abstract

Synthetic Aperture Radar (SAR) is a mature technology that overcomes the diffraction limit of an imaging system’s real aperture by taking advantage of the platform motion to coherently sample multiple sections of an aperture much larger than the physical one. Synthetic Aperture Lidar (SAL) is the extension of SAR to much shorter wavelengths (1.5 μm vs 5 cm). This new technology can offer higher resolution images in day or night time as well as in certain adverse conditions. It could be a powerful tool for Earth monitoring (ship detection, frontier surveillance, ocean monitoring) from aircraft, unattended aerial vehicle (UAV) or spatial platforms. A continuous flow of high-resolution images covering large areas would however produce a large amount of data involving a high cost in term of post-processing computational time. This paper presents a laboratory demonstration of a SAL system complete with image reconstruction based on optronic processing. This differs from the more traditional digital approach by its real-time processing capability. The SAL system is discussed and images obtained from a non-metallic diffuse target at ranges up to 3m are shown, these images being processed by a real-time optronic SAR processor origiinally designed to reconstruct SAR images from ENVISAT/ASAR data.

Citation Download Citation

Simon Turbide, Linda Marchese, Marc Terroux, François Babin, and Alain Bergeron "An all-optronic synthetic aperture lidar", Proc. SPIE 8542, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI, 854213 (19 November 2012); https://doi.org/10.1117/12.974754

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