title: Modal processing for acoustic communications in shallow water experiment.
abstract: Acoustical array data from the Shallow Water Acoustics experiment was processed to show the feasibility of broadband mode decomposition as a preprocessing method to reduce the effective channel delay spread and concentrate received signal energy in a small number of independent channels. The data were collected by a vertical array designed at the Woods Hole Oceanographic Institution. Phase-shift Keying (PSK) m-sequence modulated signals with different carrier frequencies were transmitted at a distance 19.2 km from the array. Even during a strong internal waves activity a low bit error rate was achieved.
authors.forename: Andrey K
authors.initials: AK
authors.lastname: Morozov
authors.forename: James C
authors.initials: JC
authors.lastname: Preisig
authors.forename: Joseph
authors.initials: J
authors.lastname: Papp
mesh_terms: D000162:Acoustics; D000465:Algorithms; D005240:Feasibility Studies; D008962:Models, Theoretical; D009792:Oceans and Seas; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D013018:Sound Spectrography