The Mine Counter Meassure (MCM) operation is considered from a resolution perspective. With the purpose of a safe, fast and accurate operation a concept using Autonomous Underwater Vehicles (AUV) is suggested. To improve resolution and Signal-to-Noise Ratio (SNR), synthetic aperture processing is used. The idea of circular Synthetic Aperture Sonar (SAS) is introduced to improve classi cation. Furthermore, hunting of both buried and proud mines are considered, and images from both simulated sonar data and eld experiments are shown. A circular SAS experiment was conducted, but results were degraded by poor navigation and possible interfering objects. Main conclusions are: a SAS system with a center frequency of 25kHz should be used for imaging of buried objects, a SAS system with a center frequency of 100kHz should be used for imaging of proud objects and navigation accuracy is crucial for SAS performance.