Patent ID: 6873570

Claim:
A high resolution bathymetric sidescan sonar system for measuring micro-geomorphy of the sea bottom comprising: an underwater vehicle, an underwater electronic subsystem mounted on the underwater vehicle and comprising a transmitter and a receiver, and two sonar arrays mounted symmetrically on two sides of a lower part of the underwater vehicle, and being connected to the underwater electronic subsystem through a cable, wherein the transmitter comprises a power amplifier having a last stage and the receiver comprises a preamplifier, wherein each sonar array comprises a transmitting linear array for converting a linear frequency modulated signal at an output of said transmitter into an acoustic pulse signal and transmitting said acoustic pulse signal to the sea bottom, said transmitting linear array being connected to the last stage of the power amplifier, and three or more parallel receiving linear arrays made of piezoelectric ceramic connected to the preamplifier of the receiver; and wherein the parallel receiving linear arrays are arranged at equal spaces, and the space d between two adjacent parallel receiving linear arrays is λ>≧λ/2, in which λ is a wavelength of an acoustic wave, and an operation frequency of the parallel receiving linear arrays ranges from 30 kHz to 1200 kHz.