Acoustic Systems Trainer-SONAR

AST DatasheetThe study of SONAR principles and techniques are equally as demanding as the study of RADAR principles and techniques.

With the appropriate scaling of the system operational parameters, such as an increase in frequency of operation 
(hence a shorter wavelength), and the subsequent reduction in the dimensions of the acoustic tank, lower power requirements in the active sonar mode, and a P.C. interface with software to perform the sonar signal analysis, a real-time bench top Acoustic Systems TrainerSONAR has been designed by iTP and manufactured for underwater studies.

The system is comprised of an acoustic Tank, and a control Console, containing the CW and Pulse gating electronics, and the hardware/software-processing Sonar Signal Analyzer – SSA USB data acquisition  interface for the computer.

Download  AST Datasheet.pdf

The transparent Acoustic Tank is constructed from acrylic material, measuring 1.2 meters in length, 600mm deep, and 600mm wide, with a capacity for 400 litres of water. The heaters can be used to vary the water temperature which is monitored by a submersible probe thermometer.

A variety of active targets are mounted on a reversible, variable speed Target Transport System, which enables the Doppler
 principle to be demonstrated.

The passive targets consist of a set of scale model, brass propellers, with 2, 3, 4, and 5 blades, mounted on a variable speed motor unit with integral gearbox.

Acoustic damping material can be added to the tank for mill pond quiet experiments to be conducted with the sensitive hydrophone,
 and spectrogram software.

 Both narrow beamwidth and wide beamwidth high frequency transducers can be used; allowing beam interaction to be clearly shown on the P.C. based virtual instruments.


SONAR Techniques and Principles

The foundation of the sonar principle is based upon the physics of sound waves, and all of the influences affecting the sound waves as they travel through the medium of water.

Due to the wide range of variable electronic parameters, such as PRFPulse WidthTx Frequency and Variable Phase outputs, the Acoustic Systems Trainer (AST) is ideally suited to a development environment where the what if? scenario, can be explored in complete safety.

A university MSc degree dissertation has already been written using the early AST(Mk III) as a development platform at the University of Plymouth.

Download  AST Datasheet.pdf

Indian Navy INS Valsura