Methods and systems are described for providing end-to-end beamforming. For example, end-to-end beamforming systems include end-to-end relays and ground networks to provide communications to user terminals located in user beam coverage areas. The ground segment can include geographically distributed access nodes and a central processing system. Return uplink signals, transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths in the end to end relay and are relayed to the ground network. The ground network, using beamformers, recovers user data streams transmitted by the user terminals from return downlink signals. The ground network, using beamformers generates forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals that combine to form user beams.

An on-board method for the end-to-end transparent transport of data packets is implemented by a telecommunications system comprising a first, sending station, a second, receiving station, a first, sending satellite, connected directly to the first station, and a second, receiving satellite, connected directly to the second station, the first satellite and second satellite being interconnected via a spaceborne network. The transport method comprises steps allowing an end-to-end transparent adaptive control loop for the adaptive control of the modulation and of the coding of the access links between the first station and the first satellite and between the second station and the second satellite to be implemented.

A method for a logon procedure in a satellite communication system is provided including at least one terminal, a satellite and either a gateway proxy on-board the satellite or a gateway. The method includes transmitting a logon burst signal from a terminal of the satellite communication system to the gateway proxy on-board the satellite or the gateway. The logon burst signal includes one or more transmit parameter fields, each transmit parameter field corresponding to a signal transmit time or a signal transmit level or a signal transmit frequency of the logon burst signal in the terminal.

An adjustable flood-type poultry feeder is disclosed that has a drop tube adapted to be releasably secured to a feed conveyor and a feed tube where the drop tube and the feed tube are movable relative to one another and have flood windows that can be selectively opened and closed by moving the drop tube and the feed tube relative to one another.

The disclosure provides for a system that includes a network controller. The network controller is configured to receive information from nodes of a network, where nodes include one node that is in motion relative to another node. The network controller is also configured to generate a table representing nodes, available storage at each node, and possible links in the network over a period of time based on the information, and determine a series of topologies of the network based on the table. Based on received client data including a data amount, the network controller is configured to determine flows for the topology. The network controller then is configured to generate a schedule of network configurations based on the flows, and send instructions to the nodes of the network for implementing the network configurations and transmitting client data.

Techniques for using one or more satellites as a part of a content delivery network are described. For example, in some instances a satellite of a cluster of satellites is to receive a request for a resource hosted by the content delivery network; determine that the request for the resource cannot be served by the cluster of satellites; determine a first entity to ask for the resource; send a secondary request for the resource to the determined first entity; receive the resource from the determined first entity; and respond, to a user of the content delivery network, to the request using the received resource for the resource.

Methods and systems are described for providing end-to-end beamforming. For example, end-to-end beamforming systems include end-to-end relays and ground networks to provide communications to user terminals located in user beam coverage areas. The ground segment can include geographically distributed access nodes and a central processing system. Return uplink signals, transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths in the end to end relay and are relayed to the ground network. The ground network, using beamformers, recovers user data streams transmitted by the user terminals from return downlink signals. The ground network, using beamformers generates forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals that combine to form user beams.

The present teachings include a method and computing apparatus for triggering synchronization of a satellite modem to a carrier frequency of a beam of a satellite, retrieving ephemeris information for the satellite and beam configuration information for the beam, calculating a velocity of the satellite per the ephemeris information, and adjusting the carrier frequency of the satellite modem when communicating via the beam to compensate for a doppler offset induced in the carrier frequency by the velocity. In the method, the satellite has a satellite type selected from a Geosynchronous Earth Orbit (GEO), Medium Earth Orbit (MEO) or Low Earth Orbit (LEO) type of satellite, and the satellite type is different than a satellite type of an immediately preceding synchronization.

A system and method are disclosed for synchronizing timing for a terminal in a satellite communication system. Upon detecting a service interruption, first timing markers are extrapolated from timing information received prior to the service interruption. Second timing markers are also extrapolated from timing information received subsequent to the service interruption. Timing for the terminal is then synchronized with the gateway based on a timing difference between the first timing markers and the second timing markers.

A modulation system for modulating a satellite uplink signal is described. The modulation system includes at least one computer device that includes an input interface, at least one software modulation engine, and at least one processing circuit. The input interface is configured to receive at least one input signal. The software modulation engine includes program code that is configured to modulate the at least one input signal when the software modulation engine is executed on the at least one processing circuit, thereby generating at least one IQ baseband data carrier (IQBBDC) signal based on the at least one input signal. Further, a modulation method for modulating a satellite uplink signal is described.