The problem human detection inunderwater using acoustic signal solves

Present invention generally relates to a system and method for determining or
detecting the presence of human body beneath the water bodies.

Our system uses sound(acoustic signals) to find the location of the body. Only human body will reflect all characteristic frequencies.

When the sound waves get transmitted one half of the signal moves through the body and other half gets reflected.

The frequency change and time delay are calculated to find the location. Here signals are
transmitted and received using speaker and microphone respectively.

Challenges I ran into

In this project, water itself is the main challenge for underwater communication. It difficult to communicate verbally when underwater .This is because underwater communication uses acoustic waves instead of electromagnetic waves, which are less efficient.

Above ground, high frequency radio waves transmit data at near-light speeds, but in the ocean, signals must pass through water and issues pile up quickly.

The various challenges to UWASN are limited bandwidth, multipath fading, limited battery, limited data capacity and delay in propagation.