Centre National Detudes Spatiales

Paul A Duchon

Georges Otrio

Marc Pircher

Andre A Rolfo

Jean M Guilbert

Alain De Leffe

Guy G Mouilhayrat

The invention concerns a method for acquiring an image by oversampled push-broom scanning from a satellite-borne vehicle or aircraft carrying at least a load transfer sensor bar, characterised in that it consists in controlling the attitude and the vehicle rolling, pitching and yawing angular speeds such that the longitudinal and lateral ground speeds of the bar verify: (a), (b) in which V &equals;P/Ti, P being the bar ground step, Ti the sampling period, and m and l two whole numbers.

Method for acquiring an image by oversampled push-broom scanning

Orientation system and process of an artificial satellite in low orbit. Aerodynamic control surfaces producing rotations of the satellite by upper-layer atmosphere are combined along two axes to magnetic couplers ( ) producing rotating movements along the three principal axes of pitch, roll and yaw thanks to the Earth's magnetic field. Great precision may be obtained in orienting the satellite without substantial energy consumption. Command laws are provided.

Artificial satellite equipped with generators of magnetic and aerodynamic moments and control process for such a satellite

Orientation location system of an observation instrument

Angular position finding system for an observation instrument

Artificial satellite equipped with aerodynamic orientation rudders

Equatorial orbit satellite with solar panels having blades with a medium line inclined at a certain angle relative to the equatorial plane. Thus, the field of vision of the antennaes is freed and disturbing torques become acceptable.

Satellite on an equatorial orbit with improved solar means

Growing community of inventors

Venerque, France

Paul A Duchon