Why use UAVs for Bathymetry

Bathymetry is a branch of oceanography that deals with depth measurements
of the seabed, graphic representations and morphological studies, rivers and lakes. It is essential for many applications such as navigation safety, environmental monitoring, fluid dynamics modeling, and industrial site management (dams, quarries, reservoirs).

Bathymetry has many uses in science and industry today; however,obtaining accurate measurements is difficult due to limited resources and outdated technology. Professional drones have made this process much easier by providing timely data on various ocean points.
Eventually, we will reach a point where we can accurately predict dangerous storms.

Bathymetric mapping with drones enables rapid and cost-effective measurement of water depths and sediments.

Easy to transport and deploy, this technology allows it to operate even in places that are difficult to access, dangerous or hostile.

Using drones, bathymetric surveys become 10 times faster and more cost-effective than traditional methods based on ships, boats or unmanned vehicles. The most common method is to connect a GPS device to a specialized drone and send it to the surface. The data from the drone allows the depth and characteristics of the sea to be accurately measured.This includes its temperature, salinity, density, and even its waves and currents.

Specialized Sensors

Drones are equipped with sensors such as echosounders or specially designed sonar systems to accurately measure water depth. Before the drone takes off, a flight plan is programmed into its system. This plan outlines the area to be probed, including the altitude and the path the drone will follow. Once airborne, the drone flies over the surface of the water emitting downward signals. These signals penetrate the water and bounce back to the drone sensor, providing data on water depth at various locations.

Displacement Flexibility

Drones can access remote or difficult-to-access areas that might be challenging for boats or piloted aircraft. Ideal for places of such as steep coastlines, mines, shallow water and places with natural obstacles. It is also suitable for monitoring ponds, lakes and canals without the need for a large water access point. Drones can reach places otherwise inaccessible on foot.

Data Processing

Data collected by the drone are processed using specialized software to create bathymetric maps. This software analyzes depth measurements and generates a detailed three-dimensional map of the underwater terrain.

Analysis and Interpretation: Finally, bathymetric maps can be analyzed to identify features such as underwater structures, depth variations, and contours.

Time saving

Drones can cover large areas quickly, reducing the time needed for survey.Data acquisition is 10 times faster than traditional methods due to the ease of transportation and rapid deployment of drones. Conducting drone surveys eliminates the need for personnel to work in potentially hazardous conditions on the water.