Low-logistics echo repeater, transponder & monitor for acoustic tests & evaluation

ERAS (Echo Repeater Acoustic Source System) is a compact and flexible sonar test system designed for transmitting, repeating, and analysing sonar signals during subsea testing, calibration, and training operations. Engineered for hand deployment from small vessels, the system integrates both projector and hydrophone capabilities within a lightweight portable configuration suitable for at-sea operations and acceptance trials. Controlled through an intuitive graphical user interface, ERAS enables users to generate calibrated acoustic transmissions, perform echo repetition, and conduct transponder operations across a broad range of sonar testing scenarios.

Designed for sonar performance evaluation, underwater target simulation, and operator training, ERAS supports a wide variety of configurable signal generation and echo processing modes including complex signal source transmission, echo repeater functionality, transponder simulation, slant range measurement, and received signal monitoring. Advanced digital signal processing allows users to generate tones, sweeps, broadband noise, and modulated acoustic signals while simulating Doppler effects, moving targets, and variable echo strengths. Its compact architecture and flexible operating modes make ERAS suitable for naval sonar testing, underwater surveillance exercises, and acoustic system verification in both laboratory and offshore environments.

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