Electromagnetism and Radar
SETHI
Advanced Radar and Optronic Imaging - A New-Generation Flying Lab

The SETHI pod can fit four radar and two optronics sensors
Sethi - Airborne Data Acquisition and Sensor Testbed
Meeting your scientific, environmental and security requirements
Onera is offering scientists a brand-new concept for remote sensing: SETHI, a new-generation airborne radar and optronic imaging system.
Aerial views of the Earth provide an infinite source of information on our planet, and these views have taken on even more importance today due to our growing concern with the environment and security.

Terrain elevation data based on radar interferometry
Observing the Earth with mission-specific sensors
From climatologists and agronomists to geologists and biologists, scientists need specific types of information that cannot be provided in full by conventional observation systems.
But the new generation of radar and optronic imaging systems can deliver this information. They are capable of providing general measurements or detailed images, spectral or polarimetric analyses, detection of
changes, day/night imaging, through vegetation, or in the shadows.
In short, the possibilities are endless - provided that the sensors are designed to meet the specific needs of each mission, and are operated correctly with the appropriate processing system. Onera brings to
the table over 20 years of advanced R&D experience in all of these areas.
Our latest contribution is SETHI, a complete radar and optronic imaging system, dedicated to environmental, scientific and security applications. Because of its wide range of functions and operational flexibility, SETHI is a powerful tool for measuring the Earth and unlocking its secrets.

A hyperspectral image of the Giraud salt marshes
Dual service mission
Onera offers two types of services via SETHI:
- Turnkey data acquisition package, including preparation of missions and data cquisition using proven Onera sensors, with preprocessing keyed to each application (geometry, radiometry, etc.). In addition to generating images, Onera also offers its expertise in analyzing and understanding the scene and its underlying physics.
- Testing prototype sensors, with full customer support from instrument qualification to installation, operation and data analysis. Onera can also contribute its long experience in defining requirements and designing the instrument.

Classifying crops based on polarimetric analysis
Capitalizing on Onera’s full range of experience
The SETHI concept draws on more than 20 years of research by Onera in radar and optronic imaging. A number of measurement campaigns have already been carried out on different platforms (airplane, helicopter, UAV) for a wide variety of civil and military applications.
Onera has the full range of skills needed to make sure your project is a success:
- Extensive experience in preparing and conducting airborne measurements.
- Top-quality instruments and experimental teams, recognized worldwide.
- Recognized expertise in data processing.
- In-depth understanding of the physics involved in airborne sensing, to draw maximum benefits from the information contained in each image.
- Expertise in sensor design, from initial definition to in-flight testing.