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Agence Spatiale Europeenne patents (2015 archive)


Recent patent applications related to Agence Spatiale Europeenne. Agence Spatiale Europeenne is listed as an Agent/Assignee. Note: Agence Spatiale Europeenne may have other listings under different names/spellings. We're not affiliated with Agence Spatiale Europeenne, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "A" | Agence Spatiale Europeenne-related inventors


12/03/15 / #20150351043

Transmit power control in a spread-spectrum unslotted random access communication system

A method of transmitting data packets from a terminal (t) to a gateway receiver (gwr) over a channel shared with other terminals using an unslotted spread spectrum random access protocol, characterized in that transmission is performed at a transmit power level given by the sum of a deterministic term, function of a communication link budget, and of a random term, following a predetermined probability distribution. A method of operating a communication system, based on the method of transmitting data packets. ... Agence Spatiale Europeenne

11/26/15 / #20150341098

Beam-forming network for an array antenna and array antenna comprising the same

A beam-forming network for an emitting array antenna having at least nb input ports connected to respective beam ports of the beam-forming network and at least nosa>1 output ports, for associating to each output port a linear combination of input signals from respective input ports; a set of at least nosa lossless single-mode networks, each having an input port connected to a respective output port of multi-beam network and at least nnosaosa>1 output ports, for associating to each output port a signal obtained by weighting an input signal from the input port; and a set of at least nnosa≧nnosaosa lossless multi-mode networks, each having at least nnosaosa nosanosa input ports, each one connected to an output port of a respective single-mode network, and at least nenosa>1 output ports connected to respective antenna ports of the beam-forming network, for associating to each output port a linear combination of input signals from respective input ports.. . ... Agence Spatiale Europeenne

11/19/15 / #20150333412

Array antenna with optimized elements positions and dimensions

A method of manufacturing an array antenna comprising: a design phase wherein an array layout of said array antenna is synthesized and radiating elements are designed to be arranged according to said array layout; and a phase of physically making said array antenna wherein the radiating elements are arranged according to said array layout. The design phase comprises the steps of: defining a continuous reference aperture; subdividing said continuous reference aperture into a plurality of elementary cells with assigned power levels; determining, within each said elementary cell, a position for at least one maximum efficiency radiating element; determining a size and an aperture field amplitude of each said maximum efficiency radiating element, such that a variation of a cumulative field distribution of the resulting array antenna aperture over each said elementary cell is substantially equal to a variation of a cumulative field distribution of said reference aperture over the same elementary cell, subject to size constraints.. ... Agence Spatiale Europeenne

11/19/15 / #20150331080

Re-entry broadcasting alert apparatus, system and method

A re-entry broadcasting alert apparatus having a housing provided with a heat shielda connector for attaching the housing to a space system and releasing it during atmospheric re-entry thereof; a geolocalisation receiver, for determining the position of the apparatus; a processor programmed to determine a hazard area on ground and/or in airspace, where debris from the space system are expected to fall, taking the position of the apparatus as input data; and a transmitter for broadcasting a signal carrying information defining the hazard area; the geolocalisation receiver, processor and transmitter being located within the housing. A re-entry alert receiving device, cooperating with the re-entry broadcasting alert apparatus. ... Agence Spatiale Europeenne

10/29/15 / #20150311973

Data detection method and data detector for signals transmitted over a communication channel with inner-symbol interference

A data detection method, having the steps of: a. Receiving a signal transmitted over a communication channel, the signal being representative of at least a stream of interfering symbols xk, each representing one or more bits of a transmitted message; b. ... Agence Spatiale Europeenne

09/24/15 / #20150270891

Uplink power control method and apparatus for satellite communications networks

An uplink power control method of adjusting an operating point of a high-power amplifier (hpa) of a ground-to-satellite emitter (gwj, gwk, gwl) as a function of propagation attenuation, characterized in that the method includes the steps of: a) determining an optimal output back off value of the high-power amplifier which, for an operational propagation attenuation level, maximizes a signal over noise plus total interference ratio at the satellite taking into account contributions from cochannel and cross-polar interferences, intermodulation interferences and thermal noise; and b) setting the operating point of the high-power amplifier at the optimal output back off value. A ground-to-satellite emitter comprising a high-power amplifier (hpa), a control means (proc) for adjusting an operating point of said high-power amplifier by carrying out such a method.. ... Agence Spatiale Europeenne

08/20/15 / #20150236416

Dual-band multiple beam reflector antenna for broadband satellites

A broadband satellite antenna for producing a dual-band multiple beam coverage in transmission and reception based on an offset dual-optics configuration that includes a single main parabolic reflector, a hyperbolic sub-reflector, a first transmitting multiple-feed-per-beam feed system, and a second receiving multiple-feed-per-beam feed system. The sub-reflector surface is a frequency selective surface configured to transmit any electromagnetic signals in the higher frequency band and to reflect any electromagnetic signals in the lower frequency band. ... Agence Spatiale Europeenne

07/02/15 / #20150188623

Multibeam satellite communication system and method, and satellite payload for carrying out such a method

A satellite communication system including a multibeam satellite for generating a plurality of feeder beams and a plurality of user beams over a region of interest, a plurality of spatially-separated gateway stations for providing feeder links to said multibeam satellite via respective feeder beams; and a control for operating said gateway stations and multibeam satellite such that: in nominal conditions, ngw gateway stations exchange data with k user beams, each of the gateway stations allocating a fraction of its bandwidth to each of the user beams; and in case of fading, data are switched from faded to unfaded gateway stations, whereby none of said user terminals experiences service outage. A method of performing satellite communication using the satellite communication system, and a multibeam communication satellite payload for carrying out the method are provided.. ... Agence Spatiale Europeenne

06/04/15 / #20150151854

Deployable tensegrity structure, especially for space applications

A deployable structure comprises a first and second flexible tension members respectively defining a first and second contours of a ring. A first plurality of rigid compression members extends between the first and second contours. ... Agence Spatiale Europeenne








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