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公开(公告)号：US20230121255A1
公开(公告)日：2023-04-20
申请号：US17924201
申请日：2021-05-12
发明人： Katarzyna Balakier , Laguna Victor Manuel Fernandez , Niall Andrew Macmanus , Stephen Phillip Brown
IPC分类号： H04B10/118 , H04B7/185
摘要： Embodiments of the present invention comprise a signal processing method and apparatus for use in a satellite payload in which an input RF signal received at a receiver antenna is modulated by using a single optical carrier at the input of an optical modulator. The optical domain signal is processed and is subsequently combined with a single unmodulated optical LO tone to provide an output RF signal for radiation by a transmitter antenna or for further digital processing by an on-board processor. This results in a clean generation of the frequency-converted RF signal at the output of the opto-electrical conversion stage.
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公开(公告)号：US11572200B2
公开(公告)日：2023-02-07
申请号：US17598959
申请日：2020-03-27
发明人： Juliet Gregory , James Sadler , William Bentall , Frederique Dupont De Denechin , Henri Bavestrello , Marc Manz , James Sheppard-Alden
IPC分类号： B64G1/40 , F16L37/107 , B64G1/10
摘要： A first spacecraft comprises a drive mechanism. A second spacecraft comprises a valve for filling/draining the second spacecraft. The coupling assembly comprises a first connector comprising an actuating member configured to engage and open the valve and a coupling member configured to couple to the drive mechanism. A second connector comprises a stop portion and a bore for transferring fluid. Operation of the drive mechanism rotates the coupling member and the second connector together to screw the second connector onto the valve until the stop portion engages the valve, the actuating member being prevented from moving relative to the second connector to open the valve whilst the lock is in the locked state. Once the stop portion engages the valve, operation of the drive mechanism to exert a torque on the coupling member greater than a predetermined torque level moves the lock to an unlocked state wherein the actuating member is moveable relative to the second connector to engage and open the valve.
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公开(公告)号：US20230036249A1
公开(公告)日：2023-02-02
申请号：US17782681
申请日：2020-11-30
摘要： A multibeam antenna is provided comprising a direct radiating array, DRA, and a reflector arranged to reflect signals radiated from the DRA in a transmission mode and to reflect signals to the DRA in a reception mode. The antenna is a very high throughput satellite (VHTS) antenna providing global coverage with narrow, high gain beams.
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公开(公告)号：US20220399652A1
公开(公告)日：2022-12-15
申请号：US17767514
申请日：2020-10-08
摘要： A multibeam antenna comprises a direct radiating array (DRA) comprising a plurality of radiating elements, a reflector facing the DRA so as to reflect a field generated by the DRA, and a DRA controller configured to control the plurality of radiating elements of the DRA according to a plurality of coefficients, such that the field generated at the DRA produces a plurality of beams when reflected by the reflector. The DRA controller is configured to determine the plurality of coefficients by using a bifocal antenna model to determine a field that would be produced by a subreflector and feed horn arrangement in an equivalent bifocal antenna configured to produce the plurality of beams, and determining the plurality of coefficients required to produce a similar incident field at the surface of the reflector. A method of controlling the multibeam antenna, and corresponding computer program instructions stored on a non-transitory computer-readable storage medium, are also disclosed.
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公开(公告)号：US11469482B2
公开(公告)日：2022-10-11
申请号：US16324830
申请日：2017-08-07
发明人： Ian Morris , Derek Brown , Ian Gorecki , Mike Webber , Maurice Joseph Hamer
摘要： A waveguide assembly for a radio frequency (RF) signal network can include a plurality of waveguides, wherein at least two of the plurality of waveguides are integrally formed with each other. A satellite payload can include the waveguide assembly, a method of manufacturing a waveguide assembly, and a method of manufacturing a signal network. Also provided is a waveguide connector having a flange, and a plurality of ports, wherein the flange can couple to a further waveguide connector, each port of the plurality of ports being configured to interface with a respective waveguide.
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公开(公告)号：US20220321149A1
公开(公告)日：2022-10-06
申请号：US17641488
申请日：2020-09-11
发明人： Terence DODGSON
摘要： A method of soft-decision decoding including training a machine learning agent with communication signal training data; providing to the trained machine learning agent a signal that has been received via a communications channel; operating the machine learning agent to determine respective probabilities that the received signal corresponds to each of a plurality of symbols; and, based on the determined probabilities, performing soft decision decoding on the received signal.
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公开(公告)号：US20220166540A1
公开(公告)日：2022-05-26
申请号：US17430808
申请日：2020-02-13
发明人： Jinfei WANG , Terence DODGSON , Yi MA , Songyan XUE
摘要： A method of telecommunications includes the steps of receiving an encoded block having a plurality of values, dividing the received encoded block into a plurality of received segments, each received segment comprising at least two of the values, decoding each received segment by providing, for each received segment, a plurality of estimated encoded sequences, each estimated encoded sequence comprising at least two data units, merging estimated encoded sequences for consecutive segments to provide a plurality of candidate sequences, and selecting one of the plurality of candidate sequences by performing a closest fit calculation between the received encoded data block and each of the candidate sequences. The method is suitable for use in software-defined radios.
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公开(公告)号：US20220158719A1
公开(公告)日：2022-05-19
申请号：US17437481
申请日：2020-03-12
发明人： Ashley BAKER , Paul ADAMS , Sam WOOLER , Brian VAN LUIPEN , Stuart TAYLOR
摘要： Measures for managing satellite bearer resources of a satellite telecommunications network. A corpus of data based on historical satellite bearer resource allocations is maintained. A machine learning agent is trained with the corpus to determine a plurality of weights for use in directing satellite bearer resource management in the satellite telecommunications network. A satellite bearer resource allocation request is received. A set of features is extracted from a current environment of the satellite telecommunications network. The set of features defines currently allocated satellite bearer resources. On the basis of the determined plurality of weights and the set of features, satellite bearer resources of the satellite telecommunications network are managed to satisfy the request.
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公开(公告)号：US20220089300A1
公开(公告)日：2022-03-24
申请号：US17427272
申请日：2020-01-23
发明人： Juliet GREGORY , James SADLER , William BENTALL
摘要： A system for transferring a fluid from a first spacecraft to a second spacecraft. The first spacecraft includes a fluid transfer system comprising: a pressurant supply system, a first fluid tank to store a fluid to be transferred, one or more transfer feedlines to provide fluidic connection between the first fluid tank and the second spacecraft, a connector for connecting the first spacecraft to the second spacecraft, an accumulator tank comprising a first portion connected to the pressurant supply system, a second portion configured in fluidic communication with the one or more transfer feedlines, and a flexible separator to separate the first portion and the second portion. The pressurant supply system supplies pressurant gas to the first fluid tank for pressurising the first fluid tank and to supply pressurant gas to the first portion of the accumulator tank for pressurising the first portion of the accumulator tank.
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公开(公告)号：US20200274215A1
公开(公告)日：2020-08-27
申请号：US16324830
申请日：2017-08-07
发明人： Ian MORRIS , Derek BROWN , Ian GORECKI , Mike WEBBER , Maurice Joseph HAMER
摘要： A waveguide assembly for a radio frequency (RF) signal network can include a plurality of waveguides, wherein at least two of the plurality of waveguides are integrally formed with each other. A satellite payload can include the waveguide assembly, a method of manufacturing a waveguide assembly, and a method of manufacturing a signal network. Also provided is a waveguide connector having a flange, and a plurality of ports, wherein the flange can couple to a further waveguide connector, each port of the plurality of ports being configured to interface with a respective waveguide.
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