Commissariat a L'energie Atomique Et Aux Energies Alternatives

Nicolas Mareau

Laurent Ouvry

Suzanne Lesecq

Diego Puschini Pascual

Mykhailo Zarudniev

Olivier Debicki

Julien Mottin

Roxana Dia

Jérémy Barra

Tiana Rakotovao Andriamehefa

A method for measuring, using a radar or sonar, the velocity with respect to the ground of a carrier moving parallel to the ground, includes the following steps: a) orienting the line of sight of the radar or sonar toward the ground; b) emitting a plurality of radar or sonar signals (P-P) that are directed toward the ground, and acquiring respective echo signals (E-E); c) processing the acquired echo signals so as to obtain, for one or more echo delay values, a corresponding Doppler spectrum; d) for the or at least one the echo delay value, determining a high cut-off frequency of the corresponding Doppler spectrum; and e) computing the velocity of the carrier with respect to the ground on the basis of the one or more high cut-off frequencies. A system allowing such a method to be implemented.

Method and system for measuring the velocity of a carrier with respect to the ground

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Grenoble, France

Nicolas Mareau