19-Nov-2020 | Market Research Store

Rainy seasons are always a problem for the GPS as it isn’t waterproof. The navigation system uses radio waves that are usually disturbed in the liquids like seawater. Using the acoustic signals, the tracking of undersea objects such as drones or whales is all possible. The batteries are a must for devices that generate and send sound. However, the major drawback is the size and durability of the batteries that need changing very often. Recently, a team from MIT built a system that is battery-free and named it Underwater Backscatter Localization (UBL). Instead of releasing acoustic signals, the new system reflects modulated signals from the surrounding thereby providing positioning information. This developing technology is likely to be used as a tool for climate scientists, marine conservationists, and the U.S. Navy.

In modern life, it is difficult to run from the grasps of GPS. The GPS is known to rely on satellite-transmitted radio signals, is used in shipping, navigation, targeted advertising, and more. Even though the GPS has changed the outlook toward the world it hasn’t able to explore the ocean. The radio waves are known to be destroyed when moving through the water and thus, there is a need for acoustic signals for subsea communications. The sound waves move faster under water compared to the air and thus, tagging them as efficient data transmitters. It has been found that the tracking devices release acoustic signals thereby draining the batteries completely and making the tracking of objects for a long period of time impossible. Thus, it is better to have a battery-free device.

In the piezoelectric materials, the low-power acoustic signals are generated in response to mechanical stress including getting beeped by sound waves. The piezoelectric sensors are thus believed to help reflect a few of the sound waves back into the environment. The backscatter or sequence of reflections are then translated by into a pattern of 1s (for reflected sound waves) & 0s (for non-reflected sound waves). The binary code formed can help provide information about ocean temperature or salinity. The same technology could also be used to provide information about location by calculating the elapsed time between the observer and the piezoelectric sensor. However, as ocean is like an echoing valley making the time calculation difficult.

Market Research Store has published a report on global positioning systems (GPS) market. This report covers the market statistics, market dynamics, competitive landscape, and geographical analysis.