ENSTA Bretagne : Semaine d'exploration du lac de Guerlédan
Simon Rohou

A week of experiments on Guerlédan Lake

Hydrography - Oceanography
Every year, the hydrography and robotics students join forces in the heart of Brittany on the shores of Guerlédan Lake. Interdisciplinarity, innovation, collaboration are the words that sum up this full scale experiment, which has an international flavor for this edition.
ENSTA Bretagne : vedette hydrographique

Mapping Guerlédan Lake

The students specializing in « Hydrography-Oceanography » carried out mapping of the manmade lake.

ENSTA Bretagne : Guerlédan, visite d'une école

A visit to Guerlédan School at St Aignan

Several ENSTA Bretagne final year students gave the primary school pupils workshops on the theme of acoustics. 

© Simon Rohou
ENSTA Bretagne : projet de robotique sur le lac de Guerlédan

Numerous projects involving industry

In the photo, two robots from the Texys Marine company. Other partners are also involved: Kopadia, Geown as well as the Shom and l'Ifremer not forgetting EDF.

© Simon Rohou
ENSTA Bretagne : radio en anglais

A radio program in English

Every evening, second year students produced a radio program « Planet Guerlédan » in English to practice explaining science in layman’s terms. 

80 hydrography and robotics students join forces

The 2019/2020 edition will the largest in terms of participants. For the first time, it will receive 2nd year engineering students. Those who chose the Autonomous Robotics specialism, will join the 3rd year students in the “Hydrography-Oceanography” and “Robotics” specialisms.

"On air" 

To promote the numerous projects conducted during this week of experiments, the 2nd year students will be behind the controls of an autonomous radio station dedicated to the event.

Every evening for 15 to 20 minutes, live and in English, they will go over the days main events. Devised by the English teachers, this scientific communication exercise represents a major challenge: mastery of the technology (production and materials), creation of a cue sheet, public speaking, time and stress management, team work…

Jeanne Toulouse, English teacher who devised the project:

We are not looking for perfection through this exercise, that’s why we chose to do this broadcast live. The objective is to work on communicating scientific subjects: succeed in relating all the work accomplished by the 3rd years in an intelligible way. It’s really not important if there is interference, spluttering and other gaffs.

On the water

Although the broadcast is one of the highlights in the 2nd year students’ day, most of their schedule is dedicated to lessons and experiments in real conditions.

ENSTA Bretagne has purchased about15 radio-controlled boats. They have been stripped back to the main structure and the embedded electronics have been totally redesigned by the team from the ICST department’s resource center.  

In pairs, the students are to make their boats autonomous. At the end of the week, their boat has to navigate autonomously around a polygon-shaped course on the lake.

Study subjects responding to real needs

For the final year students, the week is dedicated to projects. Some of the study subjects have been proposed by partners such as the SHOM, Ifremer, IxBlue and EDF. 

Another week of exploring the lake is planned for the beginning of February, which will enable the students to finish off, validate their data and test their robots’ algorithms.
11 sujets d'études (année 2019/2020)

- Inertial and lidar navigation coupling for positioning without GNSS
- Study on the stratification of Guerlédan Lake
- Estimation and automatic correction of systematic errors
- Depth classification by single beam : processing and analysis of the results of the SACLAF (Acoustic system for automatic seafloor classification ) Semantic T.S. protocol
- How do aquatic mammals perceive human activity ?
- Create a digital model of the Guerlédan Lake shoreline by drone-borne LiDAR
- Study of the water column using acoustic and oceanographic sensors
- Improvement of BoatBot automation
- Isobath monitoring using a state machine
Brave autonomous yacht control without GPS
Autonomous bathymetry by USV