Using a graphical user interface simulating a Mercedes semi-truck cab driver view while traveling behind an Audi A8 at varied fog levels, participants recorded following distances ranging from 50 meters to 100 meters depending on visibility. Using these data and applying it to previous research that shows signal attenuation is dependent on the signal wavelength and the medium of propagation, and then noting the medium as the total amount of water (g/m3) resulting from fog water droplet size distribution and applying that to the simulation data, researches concluded that fog has a very minor effect on attenuating DSRC signals due to the negligible molecular absorption introduced by the fog’s water particles to the DSRC signal.
The results of the simulation indicated that a DSRC signal with a wavelength of 0.05 meter will persist in its integrity and quality while propagated through a foggy environment under a wide range of fog conditions and following distances.
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