摘要:
Un récepteur de signaux GNSS comprend plusieurs canaux de poursuite configurés pour fournir des mesures relatives à un signal GNSS. Chacun comprend, en particulier, une boucle de code de type scalaire configurée pour piloter un générateur de répliques de code en vue de les synchroniser avec le signal entrant. Le récepteur comprend en outre un navigateur alimenté par les canaux de poursuite et une boucle de code de type vectoriel, alimentée par le navigateur et configurée pour piloter les générateurs de répliques de code. Un moniteur commute les canaux de poursuite entre la boucle de type vectoriel et la boucle de type scalaire respective. L'invention permet d'améliorer la navigation dans des environnements difficiles en termes de masquage et de multi-trajets, en particulier dans les milieux urbains.
摘要:
1/1 Abstract Device and method for locating at the level of a receiver, the position of at least two replicas of a data packet which are transmitted via a time and/or frequency division multiple access transmission channel, on the basis of a signal received by the receiver. Device and method for decoding at the level of a receiver, the multiple access transmission channel on the basis of the signal and comprising a plurality of replicas of data packets in which: - at least two replicas of each packet are transmitted; and, - the position of at least two replicas of a first packet has been located, on the basis of the signal received, by a locating device in at least one time and/or frequency interval comprising destructive collisions at least between a replica of the first packet and a replica of a second packet, different from the first packet.
摘要:
The invention is aimed at an aerial vehicle (10) of mini‑drone or micro‑drone type, of the remote‑operated, fixed‑wing type, comprising propulsion means, the aerial vehicle (10) comprising means (20) of attachment to a support (24) on which the vehicle could not, without being powered, rest under the effect of gravity alone, and means of detachment from this support.
摘要:
The invention relates to a microscale radio-controlled aerial vehicle, having a fixed wing (as opposed to a rotary wing) comprising propulsion means (23, 24), said vehicle comprising a means for traveling on the ground, which are attached to the side ends of a section (18) of the wing, the rotational axis Y1 of the wheels (25) being located in front of the center of gravity (31) of the micro-drone (40), the center of gravity (31) of the micro-drone (40) being located in front of the aerodynamic center (32) of the micro-drone, the rotational axis Y1 of the wheels (18) being aligned with the thrust axis of the propulsion means (23, 24), and the traveling means (25) including wheels (25) sized such that the radius D/2 thereof is greater than the distance between the rotational axis Y1 of the wheels and the trailing edge of the wing.