Nederlandse Organisatie Voor Toegepast-natuurwetenschappelijk Onderzoek Tno

Rockwell-collins France

Airbus Defence and Space Sas

Sébastien Mazuel

Eric Itcia

Jean-Marc Aymes

Albert Gezinus Huizing

Arnoldus Petrus Maria Maas

Reindert Grooters

Maternus Petrus Gerardus Otten

Pascal Olive

Didier Marchetti

Franciscus Hendrikus Elferink

Sebastiaan Gerardus Maria Van Dijk

Antoine Poulet

A method for estimating a direction of a satellite in the transfer phase. The direction of the satellite is estimated relative to a measurement antenna by executing steps for measuring the reception power, by the measurement antenna, of a target signal emitted by the satellite, for different pointing directions of the measurement antenna. The target signal has a substantially sinusoidal component referred to as a single-frequency component. Each power measurement step includes a transposition in the frequency domain of a digital signal, obtained from a signal supplied by the measurement antenna, to obtain a frequency spectrum of the digital signal over a predetermined frequency band having the single-frequency component. The power measurement for the pointing direction being considered is determined based on a maximum value of the frequency spectrum.

Method and system for estimating the direction of a satellite in the transfer phase from an initial orbit to a mission orbit

Systems and methods for protecting an airborne platform against collisions are provided. One system includes FMCW radar sensors including transmitting antennae, means for receiving signals from echoes and for processing and digitizing same, and means for sending a central unit data representing said digital signals via a dedicated point to point link. The central unit includes means for processing said data to detect obstacles, means for calculating parameters for each obstacle including its radial velocity, distance range and azimuth, and means to transmit an avionic system of said platform data representing said detected obstacles and parameters. The system further includes means for guaranteeing that said emitted signals are shifted in time to create a shift in frequency guaranteeing that the radar sensors operate in the whole frequency band without perturbing each other.

System for protecting an airborne platform against collisions

This method for detecting ground obstacles from an airborne platform comprises:

Method and system for detecting ground obstacles from an airborne platform

Growing community of inventors

Toulouse, France

Sébastien Mazuel