Emplois, stages

CENSUS is a small team with facilities in Meudon. Office, desk and laptop with docking and display are provided. Enterprise restaurant on site. Partial refunded of the NAVIGO pass (upon adminstration rules).

A concept of space mission is under study which consists in dropping a nanosatellite near an asteroid to measure the gravitational influence of the asteroid. A "radio-science" signal is sent to the CubeSat which responds with a delay and a frequency offset. A series of measurements during the asteroid flyby allows to reconstruct the precise deviation of the CubeSat and to deduce the mass of the asteroid. Currently, a test bench on the ground aims at validating the concept. The supplies are made except for a transponder (S band) already identified. A part of the bench is already integrated. In addition, a data-processing chain must translate a flight scenario into equivalent tests on the ground test bench and analyze the measurements obtained.

This mission concept is led by the IMCCE laboratory of Paris Observatory - PSL and has already received support from CNES, the Île-de-France region and the CENSUS space cluster of Paris Observatory - PSL.

The engineer in charge of the test bench will have to continue the elementary tests of the components of the bench, namely : mobile vehicle equipped with a bluetooth antenna, a mini-camera, a Lidar, a transponder with an S-band antenna and an electric motorization-steering system, fixed transmitting station and reflector screens for the Lidar. Then he/she will have to define and conduct the functional integration tests including the purchase, preparation and reception of the transponder. He/she will coordinate the involvement of radio-frequency experts and scientists of the project to interface the control system of the bench with the computer processing chain.

– Activités : -Finalization of the integration of the bench (in particular some electronic circuits) -Basic component test reports -Definition and results of integration tests -Detailed definition of the interfaces with the computer processing chain -Participation in project progress reviews -Monitoring and consulting on transponder technologies -Possible recourse to an expert consultancy in radio frequency

– Compétences : -Electronics (design and realization), Embedded electronics, C++ -Correct written English (all documentation in English), fluent spoken English -Experience in radio frequency testing will be an advantage -C++ programming in LINUX environment, git, occasionally MATLAB/OCTAVE, python -Demonstration and test culture (elementary and functional tests)

Applications with resume, citizenship AND motication letter in ENGLISH only Applications to contact.census obspm.fr Young graduates accepted, related internships and projects will be an advantage