Contents

Classical hydrophones measure pressure only, but acoustic vector-sensors also mea-sure particle velocity. Velocity measurements can increase array gain and resolve ambiguities, but make vector-sensor arrays more difficult to analyze. This thesis de-rives a new set of useful performance measures for acoustic vector-sensor arrays. It characterizes the vector-sensor array beampattern with and without modeling errors, or “mismatch. ” It also develops a hybrid Cramér-Rao bound for direction-of-arrival estimation under mismatch. The results are analyzed, compared to Monte-Carl