Title :
Implementation of a real-time system to detect the position of underwater objects
Author :
Chang, Shun-Hsyung ; Chou, Chin-Pin ; Lu, Tony ; Fu-Sheng Lu
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Ocean Univ., Keelung, Taiwan
Abstract :
In this paper, a real-time DOA (Direction-Of-Arrival) estimation system is proposed. The algorithm we adopted is the least squares algorithm which has better performance in azimuth estimation of signal source. A TMS320C32 DSP chip manufactured by Texas Instruments is used as core of this system. The data acquisition component is an 8 channel 12 bits A/D converter with sample rate 454 ksps. The hardware circuit is accomplished using four layers printed circuit board. In the simulation, the proposed real-time system could determine the azimuth of signal source correctly.
Keywords :
array signal processing; least squares approximations; oceanographic techniques; sonar signal processing; underwater sound; A/D converter; TMS320C32 DSP chip; Texas Instruments; data acquisition component; direction-of-arrival; hardware circuit; least squares algorithm; printed circuit board; real-time DOA estimation system; signal source azimuth estimation; underwater object position; Azimuth; Data acquisition; Digital signal processing chips; Direction of arrival estimation; Instruments; Least squares approximation; Manufacturing; Object detection; Real time systems; Underwater tracking;
Conference_Titel :
OCEANS 2003. Proceedings
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-933957-30-0
DOI :
10.1109/OCEANS.2003.178129
