A low frequency wideband depth sounder for sea ice. - Vijay Ramasami; Sivaprasad Gogineni; Ben Holt; Pannirselvam Kanagaratnam; K. Gurumoorthy; S. K. Namburi; J. Henslee; David Braaten; Andrew R. Mahoney; Victoria I. Lytle (IGARSS, 2003)