高スループットの分散型衛星

Japanese Patent JP7132445

B2

A station configured to support direct communication between a set of discrete satellite modules operating in low Earth orbit (LEO) and forming a distributed phased-array antenna with a single aperture and a set of end user devices, the station comprising: memory configured to store information including at least one of communication link frequency assignments, beam mapping, or satellite constellation ephemeris information; and one or more processors operatively coupled to the memory, the one or more processors being configured to: perform, based on the stored information, Doppler compensation to a center or substantially center of each beam that provides communication between the set of end user devices and the distributed phased-array antenna operating in LEO, wherein each beam is associated with a corresponding cell of a set of cells according to the single aperture, so that a Doppler shift for each beam as seen by a respective end user device of the set of end user devices that is in a given one of the set of cells falls below 1200 Hz; and perform, according to the stored information, delay compensation to the center or substantially center of each beam in the given cell so that a delay as seen by the respective end user device of the set of end user devices is below 0.5 ms. There is further provided a corresponding system.

Abel Averan
Suriname Jayashimuha

JP2021555476A

September 06, 2022

March 05, 2020

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AST & Science, LLC

B64G3/00; B64G1/10; B64G1/22; B64G1/66; B64G5/00; H01Q1/28; H01Q21/06; H04B7/155; H04B7/185

JP2017518723A
JP8500216A

WO2009110053A1
US20070184778
US6314269
US6058306

Akira Imai

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