aveFinder is a microwave radar that functions by sending microwave frequency-modulated (FM) chirp signals and receiving the echo from the water surface.
The round-trip delay in signal propagation between the antenna and the water surface causes a beat-signal in the receiver. The beat frequency is then converted to an accurate distance. The distance to the surface can range from 1 to 100 meters which is superior to what competing sensors can offer.
Up to 50 measurements per second are averaged over a user-selectable averaging time. Therefore, the WaveFinder gives uniquely accurate range measurements and high long-term stability.