Variable stayout distance for beamhopping satellite

    公开(公告)号:US11632167B2

    公开(公告)日:2023-04-18

    申请号:US17691280

    申请日:2022-03-10

    IPC分类号: H04B7/06 H04B7/204 H04B7/185

    摘要: A system and method for scheduling a variable stayout distance when beam hopping, the method including providing an illumination area of a satellite and candidate beam centers disposed in the illumination area; measuring a respective scan angle from an antenna boresight to a respective beam center of the candidate beam centers; and determining a reuse factor k for each of the candidate beam centers, based on a proportion of the respective scan angle to a maximum scan angle. Each candidate beam center may be processed sequentially. Prior to adding each candidate beam center to a current beam center set, checking whether a candidate beam center meets the stayout distance criteria from all beam centers already in the beam center set.

    Weather-resilient countermeasures for line-of-sight multiple-input multiple-output feeder links in multibeam satellite systems

    公开(公告)号:US11632150B2

    公开(公告)日:2023-04-18

    申请号:US17452547

    申请日:2021-10-27

    申请人: Bassel F. Beidas

    发明人: Bassel F. Beidas

    摘要: A system and method for providing multi-input multi-output (MIMO) feeder links for a multibeam satellite system. The method includes configuring a X×Y MIMO antenna system using X-antennae having dominant line-of-sight (LoS) of Y-antennae; transmitting, simultaneously, a Tx signal as X Tx signals on a MIMO channel with the X-antennae; receiving the X Tx signals on the MIMO channel with the Y-antennae as Y Rx signals, wherein each of the Y-antennae generate one of the Y Rx signals; and ground-interference processing the X Tx signals or the Y Rx signals to recover the Tx signal; satellite-interference processing the X Tx signals or the Y Rx signals to recover the Tx signal. In the method, the ground interference processing includes countermeasures as either pre-interference processing when the X-antennae are disposed on a ground or post-interference processing when the X-antennae are disposed in a Geosynchronous orbit satellite. Gateway diversity for multiple MIMO feeder links utilizing these countermeasures improves weather-resiliency and significantly enhances overall satellite network availability.

    Portable electric heating mat for use by an animal

    公开(公告)号:US11602014B2

    公开(公告)日:2023-03-07

    申请号:US16792664

    申请日:2020-02-17

    摘要: An electric heating mat may include an outer sleeve having an interior, and an access end with an opening to the interior. The access end may be folded upon itself into a closed condition, and unfolded into an opened condition. When the access end is closed, the interior of the outer sleeve may provide a sealed enclosure. The sealed enclosure may accommodate and protect internal components, such as heating elements, a power source, and associated controls. The heating elements, associated wiring, and an insulation layer may be provided in an inner sleeve, which may be insertable into the outer sleeve as a unit. When the access end is opened, the opening provides access to the internal components. Such access allows the power source to be turned on to supply power to the heating elements.

    Dynamic resizing of a satellite link outroute or forward channel

    公开(公告)号:US11589315B2

    公开(公告)日:2023-02-21

    申请号:US16692249

    申请日:2019-11-22

    摘要: A satellite communication system and method for resizing an outroute carrier from a gateway to a terminal population including determining, at the gateway, an insufficiency based on an Uplink Power Control (ULPC) function in conjunction with an Adaptive Coding and Modulation (ACM) function failing to maintain the outroute carrier in operation; and downsizing, at the gateway based on the insufficiency, the outroute carrier by decreasing a symbol rate of the outroute carrier from the gateway while maintaining the aggregate carrier output power level to increase an outroute carrier margin, where the insufficiency is based on a fade. The outroute carrier may be upsized when the insufficiency expires or is reduced.

    System and method for improving link performance with ground based beam former

    公开(公告)号:US11588542B2

    公开(公告)日:2023-02-21

    申请号:US16952657

    申请日:2020-11-19

    摘要: A method and system for improving link performance for a user terminal (UT) in a satellite network is disclosed. The method including: providing a first beam servicing a first service area that is adjacent a second service area serviced by a second beam; transmitting, from the first service area, a transmission via the first beam to a receiver via a satellite; beamforming the first beam and the second beam at the receiver; extracting the first beam and a remnant signal of the first beam from the second beam; and processing the first beam and the remnant signal to receive the transmission, wherein the remnant signal may include a portion of the transmission received by a second beam antenna of the satellite.

    Variable length DVB-S2X SuperFrame for satellite beam hopping system

    公开(公告)号:US11546048B2

    公开(公告)日:2023-01-03

    申请号:US16572757

    申请日:2019-09-17

    IPC分类号: H04B7/185 H04J3/06 H04J3/22

    摘要: A system and method for Time Division Multiplexing a signal for a beam hopping relay including generating the signal by interleaving first multi-variable length SuperFrames (VLSFs) with second multi-VLSFs; and transmitting the signal to the beam hopping relay. In the method, the first multi-VLSFs includes at least one first VLSF, the second multi-VLSFs includes at least one second VLSF, each of the first multi-VLSFs has a duration of a first dwell period, each of the second multi-VLSFs has a duration of a second dwell period, each of the at least one first VLSF and each of the at least one second VLSFs includes at least one SuperFrame unit (SFU). Further, the first dwell period is an integral multiple of the first duration, the second dwell period is an integral multiple of the second duration, and the first duration is different than the second duration.

    Electrical energy transfer system for a wire mesh heater

    公开(公告)号:US11470690B2

    公开(公告)日:2022-10-11

    申请号:US16328082

    申请日:2017-08-31

    IPC分类号: H05B3/34 A21B1/22 H05B3/06

    摘要: The present teachings disclose a wire mesh heater including: a wire mesh element having a surface area comprising a non-contact area and a contact area; a primary conductor having a hollow and a contact surface; and a secondary conductor including a configured to expand outwards. The contact area contacts the contact surface to provide an electrical connection between the wire mesh element and the primary conductor, and the primary conductor is disposed about the secondary conductor and secured to the secondary conductor when expanded.