Florentin Millour - Lagrange - Keywords: Nanosatellite, data transmission, retroreflector, optical light modulation

Florentin Millour - Lagrange - Keywords: Nanosatellite, data transmission, retroreflector, optical light modulation

Contribution title: Data transmission with an optical link between a nanosatellite and the ground

We are developing a nanosatellite communications system in the CSUCA (Centre Spatial Universitaire de la Côte d’Azur) aiming at transferring data from the satellite to the ground via an optical link. Nanosatellites are smallsats of 1 liter volume and 1kg mass, which enable one to fly scientific experiments made by university or engineering school students. These satellites have low power and limited communication capabilities due to their size. Being able to downlink vast amounts of data from these smallsats could be a game changer for space and Earth imaging applications. We decided to tackle this challenge and start the definition work of a system using retro-reflectors and light modulators, which will combine low power, high data rates and miniaturization, all of which are necessary to embark it into a nanosatellite