Non-contact surface wave scanning of pavements using a rolling microphone array

We present experiments with a rolling multichannel microphone array where measurements can be taken continuously while moving. Leaky air‐coupled surface waves are measured with ordinary non‐directional audio microphones. Results show that microphones can be successfully used to produce a realistic phase velocity spectrum even while moving along the surface. The paper presents some theoretical background along with initial experimental results using the moving microphone array.