Title :
Design and simulation of a high resolution low-probability-of-intercept sonar system
Author :
Woodrow, Christopher W. ; Follett, Randolph F.
Author_Institution :
Martin Marietta Energy Syst., Oak Ridge, TN, USA
Abstract :
The results of a comprehensive simulation of a high-resolution, low-probability of intercept (LPI) sonar system utilizing a three-tiered fast Fourier transform structure for the beamformer are described. The simulation included the effects of noise. Doppler shift, reception of only part of the signal, and the target being between main axes of the steered beams. The design of the receiver array is discussed. The results of the simulation showed that the system was able to correctly identify the angle to the target. The desired LPI characteristics were achieved by using a wide band (50 kHz to 250 kHz) of frequencies for signaling. The expected performance for a nominal undersea navigation scenario is presented and discussed
Keywords :
fast Fourier transforms; signal processing; sonar; 50 to 250 kHz; Doppler shift; LPI characteristics; design; high resolution low-probability-of-intercept sonar system; noise; receiver array; signal processing; simulation; three-tiered fast Fourier transform structure; Delay systems; Energy measurement; Energy resolution; Frequency; Signal design; Signal resolution; Sonar applications; Space vector pulse width modulation; Spatial filters; Wideband;
Conference_Titel :
Southeastcon '90. Proceedings., IEEE
Conference_Location :
New Orleans, LA
DOI :
10.1109/SECON.1990.117894
