title: Beamforming using compressive sensing.
abstract: Compressive sensing (CS) is compared with conventional beamforming using horizontal beamforming of at-sea, towed-array data. They are compared qualitatively using bearing time records and quantitatively using signal-to-interference ratio. Qualitatively, CS exhibits lower levels of background interference than conventional beamforming. Furthermore, bearing time records show increasing, but tolerable, levels of background interference when the number of elements is decreased. For the full array, CS generates signal-to-interference ratio of 12 dB, but conventional beamforming only 8 dB. The superiority of CS over conventional beamforming is much more pronounced with undersampling.
authors.affiliation: Naval Research Laboratory, 4555 Overlook Avenue West, Code 7140, Washington, DC 20375, USA. geoffrey.edelmann@nrl.navy.mil
authors.forename: Geoffrey F
authors.initials: GF
authors.lastname: Edelmann
authors.forename: Charles F
authors.initials: CF
authors.lastname: Gaumond
mesh_terms: D000162:Acoustics / Q000295:instrumentation; D000465:Algorithms; D016477:Artifacts; D008962:Models, Theoretical; D009038:Motion; D009624:Noise, Transportation; D009792:Oceans and Seas; D012767:Ships; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D013018:Sound Spectrography; D013997:Time Factors; D014159:Transducers; D014867:Water
chemical_list: D014867:Water