Electronics, Optronics and Signal Processing Department (DEOS)

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At ISAE-SUPAERO, we conduct cutting-edge research in the service of innovation, technological sovereignty and the ecological transition of the aerospace sector, thereby affirming our role as a leading player in the scientific and industrial community.

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The “Photonics Antenna Microwave PlasmaA” (PAMPA) scientific group is interested in electromagnetism in the fields of microwaves and photonics, as well as wave-plasma interactions.

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In September 2021, NASA's InSight mission recorded a meteorite impact. Analysis of the data by scientists has revolutionised our understanding of the internal structure of Mars and its evolution. Its mantle is not homogeneous, as previously assumed, but composed of a layer of molten silicates overlying the core. Press release from the IPGP - Institut de Physique du Globe de Paris: ‘The InSight mission reveals a molten layer at the base of the Martian mantle’.

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The “Integrated Image Sensors” (CIMI) scientific group, develops and characterizes active-pixel image sensors (CMOS Image Sensors (CIS)) on silicon for visible and infrared radiation.

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The “Space Systems for Planetology and Applications” (SSPA) scientific group focuses on one main area of research: the development of missions and associated technologies for geophysical exploration of the solar system.

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ISAE-SUPAERO is one of the signatories of the National Charter of Ethics for Research Professions, adopted in January 2015 by the Conference of University Presidents (CPU) and all national research organizations, and incorporated into the Institute's internal regulations.

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ISAE-SUPAERO - as a center for training through research, research training and innovation - has a wide range of research equipment used in its 6 research departments. Today, we present CMOS image sensors! CMOS image sensors are playing an increasingly important role in our everyday lives. For several years now, our team at ISAE-SUPAERO has been developing CMOS image sensors with a number of players in the field, and innovating by proposing new architectures and conditions of use requiring studies of both elementary components and more complex structures. Measurements are carried out on transistors and diodes with the help of an under-tip tester and a parametric analyzer enabling very low current measurements (10 aA). Similarly, simple structures containing innovative pixels can be operated with the tester using spike cards coupled to a word generator specially designed for image sensors. All these studies not only contribute to our understanding of the physics of photodetection, but also provide models for our simulators. They are also used to monitor manufacturing processes during the various production phases.

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ISAE-SUPAERO - as a center for training through research, research training and innovation - has a wide range of research equipment used in its 6 research departments. Today, we'd like to introduce you to mobile ground robots! Whether robots, airplanes, cars or even telephones, all these technologies are equipped with perception systems. Depending on the application, these sources of information make it possible to perceive the environment in which a system is evolving, and also to measure its own characteristics, such as speed or acceleration. This multitude of data must then be used, cross-referenced and interpreted within the navigation system to obtain the vehicle's position, but also, in the case of mapping applications, that of surrounding objects. Within the DEOS NAVIRRES team, researchers are interested in navigation systems and their application in complex environments where sensor information may be degraded, erroneous or unavailable. Mobile acquisition platforms are being developed. These are equipped with cameras, lidars, GNSS (Global Navigation Satellite System) receivers, radars and inertial units, with the aim of obtaining the most efficient navigation system for the application in question. One of the team's research themes is the analysis of the degradation of sensor information, enabling the development of new robust and adaptive algorithms to compensate for environmental constraints. The aim is to make navigation systems more accurate and safer, for critical applications requiring strong reliability constraints, such as autonomous cars or exploration robotics.

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The “Communication and Information Theory” (ComiT) scientific group is involved in the disciplines of digital communications, radar, and channel access techniques. Its fields of application include space systems, civil and military aviation, terrestrial cellular networks and the Internet of Things (IoT).

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Located 80 meters from the rover at the moment of take-off, the small helicopter rose to 5 meters above the ground before covering a distance of 133 meters before returning to land where it had taken off from. SuperCam's scientific microphone, developed by ISAE-SUPAERO, recorded the sound emitted by the rotation of the Martian drone's blades during its flight. This sound has a characteristic frequency of 84 Hz, equivalent to the low “E” of a piano or the bass voice of a human being. “This is a big surprise for the whole scientific team,” says Naomi Murdoch, a researcher at ISAE-SUPAERO who is studying the data from the microphone. "Tests carried out in a Martian atmosphere simulator to design this instrument, and our theories of sound propagation, indicated that the microphone would have great difficulty picking up the sounds of the helicopter. Indeed, Mars' thin atmosphere strongly attenuates sound transmission. We needed a bit of luck to record the helicopter from such a distance. We're very pleased to have succeeded in obtaining this recording, which is proving to be a goldmine for our understanding of the Martian atmosphere". Developed jointly by ISAE-SUPAERO and a consortium of CNRS laboratories and its partners, coordinated by CNES, SuperCam's microphone is derived from a consumer model adapted to withstand the Martian environment. It pursues 3 substantial scientific and technical objectives of the Mars 2020 mission: Study the sound associated with laser impacts on Martian rocks, to gain a better understanding of their mechanical properties. Improving our understanding of atmospheric phenomena (wind turbulence, dust eddies, wind interactions with the rover, and now with the helicopter). Understanding the sound signature of the rover's various movements (robotic arm and mast operations, driving on normal or uneven ground, pump monitoring, etc.). The microphone was first switched on a few hours after Perseverance landed. It recorded the first Martian sounds generated by turbulence in the atmosphere. It is used daily in conjunction with laser rock ablation for chemical analysis of Mars. ABOUT THE MARS 2020 MISSION: NASA is relying on Caltech's Jet Propulsion Laboratory for the development of the Mars 2020 mission. SuperCam was developed jointly by LANL (Los Alamos National Laboratory, USA) and a consortium of laboratories attached to the CNRS, French universities and research establishments. Several Spanish universities, led by the University of Valladolid, are also contributing to the instrument. CNES is responsible to NASA for the French contribution to SuperCam. The instrument is operated alternately from LANL and the French Operations Center for Science and Exploration (FOCSE) at CNES in Toulouse.

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The Hera mission, an international planetary defence mission, is on its way to study the asteroid Dimorphos, which will be struck by DART in 2022. ISAE-SUPAERO is actively collaborating in this international planetary defence programme through the research work of Naomi Murdoch and the SSPA team.

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Dr Naomi Murdoch, researcher in space instrumentation and planetary science, and Dr Alexander Stott, post-doctoral fellow, tell us more about the physical characteristics of Mars' atmosphere, in particular the speed of sound and its attenuation. These analyses were published in Nature on April 1, 2022 by an international team led by a teacher-researcher from Toulouse III - Paul Sabatier University, and including scientists from CNRS and ISAE-SUPAERO.

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ESA's ExoMars Rosalind Franklin mission to explore Mars will carry a unique instrument for recording sound and atmospheric data from the planet. The Institute has been selected by ESA and CNES for this major scientific collaboration.

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The “Navigation, Radar and Remonte Sensing” (NAVIR² eS) scientific group is interested in the theoretical study of information sources and hybridization approaches for autonomous vehicle navigation applications.

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A team of DEOS researchers has achieved a significant milestone in the use of infrasound data captured by stratospheric balloons to understand seismic signals. This breakthrough, published in Earth Planets Space*, opens up new perspectives for the study of earthquakes, both on Earth and on other planets.

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ISAE-SUPAERO has been integrating quantum physics into its training and research activities uninterruptedly since 1980, and for the past two decades has been offering courses linked to the second quantum revolution.

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ISAE-SUPAERO has been integrating quantum physics into its training and research activities uninterruptedly since 1980, and for the past two decades has been offering courses linked to the second quantum revolution.

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ISAE-SUPAERO - as a center for training through research, research training and innovation - has a wide range of research equipment used by its 6 research departments. Today, we present our cryogenic equipment for electrical testing! ISAE-SUPAERO's image sensor research group (CIMI) studies sensors in the visible wavelength range, but also sensors in different spectral ranges such as infrared. Detection of these longer wavelengths requires materials other than silicon for detection, combined with a silicon readout circuit for information processing, all operating at cryogenic temperature. In this context, ISAE-SUPAERO has developed electrical and electro-optical characterization benches for low-temperature microelectronic circuits, in order to extract and model their behavior and performance. These characterization benches can address both very simple circuits, such as transistors, and complex components (complete sensors) with up to 120 inputs/outputs.

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The Sentinel 2c Earth observation satellite, launched on 5 September as part of ESA's Copernicus mission, has delivered its first images. This success is partly due to the image sensor research team (CIMI) at ISAE-SUPAERO, which designed and oversaw the manufacture of the visible image sensors.

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Naomi Murdoch, a researcher in physics and planetology at ISAE-SUPAERO, has just been awarded the prestigious Consolidator Grant from the European Research Council (ERC) for her planetary body study project called GRAVITE. This ambitious scientific project aims to design a variable gravity machine that will enable the simulation and study of extraterrestrial soils.

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Naomi Murdoch, a planetary science researcher at ISAE-SUPAERO, is actively involved in scientific analysis and data interpretation for NASA's DART mission.

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The InSight lander deployed by NASA recorded two earthquakes that occurred on Mars in 2021, providing scientists with exceptional data, the first direct observations ever made of a planet's core.

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Studying the formation and origin of Mars' moons and bringing back samples: this is the extraordinary, ambitious international mission led by JAXA, in which ISAE-SUPAERO is participating alongside CNES.

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The SILOE experimental drop tower project aims to study the cohesion of planetary surfaces. This student project is supported by ESA as part of its European ‘Academy Experiments’ program. Alexia Duchêne, SILOE project leader, has been awarded a scholarship of excellence from the Fondation des Ailes de France.