UNDERWATER COMMUNICATION TEST SOLUTION Underwater Communication Test Solution Acoustic waves serve as the primary carrier of information and energy in underwater environments, and are widely employed in ocean-resource exploration, seafloor mapping, underwater communications, and military detection. Yet, during propagation, underwater acoustic signals are vulnerable to attenuation, multipath effects, and ambient noise, which limit transmission range and degrade the signal-to-noise ratio. Consequently, high-power, high-fidelity excitation and reception of acoustic signals have become pivotal for enhancing the performance of underwater detection and communication systems. ATA-L Series Power Amplifier • Maximum Output Power 6500VA Wide-band, high-power Eight switchable voltage output ranges • Maximum Output Voltage 1200Vrms Real-time readback of RMS output voltage and current | Test Solution • Matching-layer design combined with four-quadrant power-amplifier output raises transmittance to 60%. • Driving low-frequency transducers enhances signal penetration. • A high-sensitivity hydrophone array, coupled with adaptive equalization, suppresses multipath interference. • Broadband amplification safeguards signal integrity in underwater communications. • Modular architecture (ATA-ML100 footprint reduced by 40%). • High-power drive: kilovolt-level output with exceptional amplitude- and phase-frequency response for high-power performance. • Precise control: digitally-controlled gain adjustment to meet complex underwater acoustic simulation demands. • Stable & reliable: harmonic distortion suppressed to 0.1 %, enabling long-duration continuous operation. • Flexible adaptation: supports customized impedance matching to guarantee output characteristics; compatible with all types of transducers and receiving equipment. • Protection mechanisms: comprehensive safeguards including over-current, over-voltage, and over-temperature protection. O Bd. 12, CCCC Science andTechnology City, Wei26Road, High-tech Zone, Xi'an,Shaanxi Province

UNDERWATER COMMUNICATION TEST SOLUTION Case 1: Experimental validation of a high-efficiency non-local underwater acoustic metasurface The underwater environment is intrinsically complex and variable. Acoustic waves, as the primary information carriers, have long struggled with limited transmission efficiency and precise controllability. Conventional acoustic approaches encounter bottlenecks in energy utilization, directivity control, and adaptability to intricate channels. This study centers on the high-efficiency manipulation of underwater acoustic signals, aiming to uncover novel acoustic mechanisms...