US Patent 9062983 Terrain classification system for a vehicle

A terrain classification system for a vehicle includes a sensor positioned to scan a surrounding terrain, the sensor providing a sensor signal representative of returns from scanning the surrounding terrain. The terrain classification system also includes a processing circuit configured to receive the sensor signal, classify the surrounding terrain using the sensor signal, evaluate a library of acoustic data to determine an expected acoustic signature that corresponds to the classified surrounding terrain, and create an acoustic cost map with the expected acoustic signature.