Estimating relative channel impulse responses from ships of opportunity in a shallow water environment Gemba, Kay L. ; Sarkar, Jit ; Cornuelle, Bruce ; Hodgkiss, William S. ; Kuperman, W. A. Abstract Publication: Acoustical Society of America Journal Pub Date: September 2018 DOI: 10.1121/1.5052259 Bibcode: 2018ASAJ..144.1231G