Title :
Unmanned underwater vehicle broadband synthetic aperture sonar
Author :
Christoff, James T. ; Fernandez, Jose E. ; Cook, Daniel A.
Author_Institution :
Naval Surface Warfare Center, Panama, FL, USA
Abstract :
The experimental synthetic aperture sonar (SAS) in use at the US Navy Coastal Systems Station (CSS) in Panama City, Florida, was first fielded in 1996. Since then, the system has proved itself to be a reliable high-quality sensor. The original configuration provides for simultaneous imaging at two frequency bands; one centered at 20 kHz (10 kHz bandwidth) and the other at 180 kHz (30 kHz bandwidth). The CSS SAS has recently been upgraded with the addition of a new broadband low-frequency transmitter capable of producing a linear FM chirp from 8-55 kHz. This paper discusses the details of the system upgrade and some of the signal processing opportunities afforded by it.
Keywords :
oceanographic equipment; synthetic aperture sonar; underwater acoustic propagation; underwater vehicles; 1.0E1 kHz; 1.8E2 kHz; 2.0E1 kHz; 3.0E1 kHz; 8 to 5.5E1 kHz; CSS SAS; Panama City; US Navy Coastal Systems Station; broadband SAS; broadband transmitter; frequency bands; high-quality sensor; linear FM chirp; low-frequency transmitter; signal processing; simultaneous imaging; synthetic aperture sonar; unmanned underwater vehicle; Bandwidth; Cascading style sheets; Chirp; Cities and towns; Frequency; Sea measurements; Sensor systems; Synthetic aperture sonar; Transmitters; Underwater vehicles;
Conference_Titel :
OCEANS '02 MTS/IEEE
Print_ISBN :
0-7803-7534-3
DOI :
10.1109/OCEANS.2002.1191916
