Pavement condition sensor based on a dual optical frequency comb generator

A pavement condition sensor aims to estimate the surface grip, and therefore must detect presence of water, snow, slush or like on pavement. The leading technology for such a is near infrared diffuse reflectance spectroscopy using wavelength range around water absorption peak. In this paper we present based said technique that uses an electro-optic dual optical frequency comb generator as source. proposed provides unique properties in terms measuring integration time are necessary advance several meters ahead moving vehicle.