SPACE-TIME DIVISION MULTIPLE-ACCESS LASER COMMUNICATIONS SYSTEM
First Claim
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1. A space-time division multiple-access (STDMA) laser communications system comprising:
- a plurality of remote nodes; and
an STDMA access node having an optical communications aperture and a plurality of optical pointing, acquisition and tracking (PAT) apertures, with each of the plurality of PAT apertures having a beacon beam in communication with one of said plurality of remotes nodes.
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Abstract
A space-time division multiple-access (STDMA) laser communications (lasercom) system and related techniques. The STDMA system includes a plurality of remote nodes and an STDMA access node which uses precise electronic beam steering and beacons to provide access to each of a plurality of remote access nodes by means of both space and time-division multiple access.
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Citations
26 Claims
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1. A space-time division multiple-access (STDMA) laser communications system comprising:
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a plurality of remote nodes; and an STDMA access node having an optical communications aperture and a plurality of optical pointing, acquisition and tracking (PAT) apertures, with each of the plurality of PAT apertures having a beacon beam in communication with one of said plurality of remotes nodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for operating an optical communications system, the method comprising:
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transmitting a plurality of beacon beams from an STDMA access node to locate a corresponding plurality of remote nodes; and selecting a one of said plurality of remote nodes; and directing an STDMA access node downlink (D/L) transmit beam to the selected remote node to establish a communications link between the STDMA access node and the selected remote node. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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Specification