Wideband dual-frequency lidar-radar for high-resolution ranging, profilometry, and Doppler measurement

G. Pillet; L. Morvan; D. Dolfi; J.-P. Huignard

doi:10.1117/12.800176

2 October 2008 Wideband dual-frequency lidar-radar for high-resolution ranging, profilometry, and Doppler measurement

G. Pillet, L. Morvan, D. Dolfi, J.-P. Huignard

Proceedings Volume 7114, Electro-Optical Remote Sensing, Photonic Technologies, and Applications II; 71140E (2008) https://doi.org/10.1117/12.800176
Event: SPIE Security + Defence, 2008, Cardiff, Wales, United Kingdom

Abstract

We report on a wideband lidar-radar architecture in which range resolution is independent of pulse duration thanks to the use of a widely tunable intensity-modulated laser combined with a radar-like signal processing. As a source, we use a dual-frequency laser which provides a 100 % depth intensity modulated beam at GHz frequencies. The frequency is electrically adjustable over 1 GHz and is stabilized with a fiber-loop based frequency discriminator. With this setup, we generated a 1 GHz bandwidth stepped-frequency waveform. A range resolution of 22 cm is demonstrated.

Citation Download Citation

G. Pillet, L. Morvan, D. Dolfi, and J.-P. Huignard "Wideband dual-frequency lidar-radar for high-resolution ranging, profilometry, and Doppler measurement", Proc. SPIE 7114, Electro-Optical Remote Sensing, Photonic Technologies, and Applications II, 71140E (2 October 2008); https://doi.org/10.1117/12.800176

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