Sonar echo analysis
Abstract
Pulse mode sonar operation is analyzed under the assumption that the scattering object Gamma lies in the far fields of both the transmitter and the receiver. It is shown that, in this approximation, the sonar signal is a plane wave sx times Theta(0)t near Gamma, where Theta(0) is a unit vector directed from the transmitter toward Gamma and similarity the echo is a plane wave ex times Theta (0)t near the receiver, where Theta is a unit vector directed from Gamma toward the receiver.
 Publication:

Summary Report Utah Univ
 Pub Date:
 March 1977
 Bibcode:
 1977utah.rept.....W
 Keywords:

 Acoustic Scattering;
 Echoes;
 Fourier Analysis;
 Sonar;
 Underwater Acoustics;
 Boundary Value Problems;
 Doppler Effect;
 Far Fields;
 Plane Waves;
 Pulse Modulation;
 Transmittance;
 Acoustics