REMOTE SPECTROSCOPY DEVICE WITH COMPLEX LASER SOURCE AND ASSOCIATED DISTANCE SPECTROSCOPY METHOD

摘要

The present invention relates to a device (10) of LIDAR type remote spectroscopy comprising a module (12) for generating a transmission signal, a transmission module (14) for transmitting signal to a targeted material, a receiving module (15) of a response signal and a post-processing module (16) of the response signal for determining a composition of the targeted material. The generation module (12) comprises at least two laser sources, each laser source being able to generate a laser signal at a predetermined wavelength, an upstream mixer capable of mixing the laser signals generated by the different laser sources, and a first modulator adapted to modulate the complex signal at a first modulation frequency to form the transmission signal.