Title :
The SW-2000. A new Doppler current profiler
Author :
Christensen, J.L.
Author_Institution :
Sunwest Technol. Inc., El Cajon, CA, USA
Abstract :
A general purpose Doppler current profiler is described. The instrument is self contained in that it requires no additional computer nor does it require a keyboard. The heart of the instrument is a 40 MHz \´386 supporting two floating point DSP processors on a single board. There is no firmware in the system. All code is contained on a built-in hard drive and is updated from a 3.5" disk. Instrument control is by means of a touch panel. There is sufficient computational power to perform over one-thousand 1024 point FFT\´s per second. The hardware supports coded pulse pair transmissions or un-coded transmissions as desired. The system is tunable from 75 kHz to well over 2 Mhz with a resolution of about 1 Hz. Transmit power level is controlled by software and there is complete built-in test capability
Keywords :
acoustic applications; computerised instrumentation; flow measurement; flowmeters; oceanographic equipment; oceanographic techniques; sonar; 386; 75 kHz to 2.5 MHz; SW-2000; acoustic Doppler current profiler; coded pulse pair transmission; computer; computerised instrument; current; dynamics; floating point DSP processor; flow; geophysics computing; hard drive; measurement technique; ocean current; sea; sonar; ultrasonic; Built-in self-test; Control systems; Digital signal processing; Drives; Embedded software; Hardware; Heart; Instruments; Keyboards; Microprogramming;
Conference_Titel :
OCEANS '93. Engineering in Harmony with Ocean. Proceedings
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-1385-2
DOI :
10.1109/OCEANS.1993.326125
