Water affects certain wavelengths, and there's been good progress on LIDAR that uses wavelengths that aren't effected.
Most approaches want to use a wavelength that has as little ambient light as possible. That light is absent precisely because it is absorbed by water vapor in the atmosphere. The alternative approach must deal with lower signal:noise, but is not substantially affected by weather.
Most approaches want to use a wavelength that has as little ambient light as possible. That light is absent precisely because it is absorbed by water vapor in the atmosphere. The alternative approach must deal with lower signal:noise, but is not substantially affected by weather.