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US 11,695,198 B1Granted
Distributed semi-autonomous phased arrays for subsurface VLF transmission
AssigneeHRL Laboratories, LLC
InventorsCarson R. White, Walter S. Wall
Life of this patent
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Abstract
A system for subsurface transmission includes an array of very low frequency (VLF) transmitter nodes supported by semi-autonomous maritime, airborne, or space platforms spaced at regular intervals from their nearest neighbors and phased to localize VLF coverage to some desired area on a body of water.
Claims14
A system for subsurface transmission comprising:
- a first array of very low frequency (VLF) transmitter nodes each hosted on an airborne platform, each VLF transmitter node comprising:
- a controller;
- a VLF transmitter coupled to the controller;
- a data buffer coupled to the controller;
- a navigation subsystem coupled to the controller;
- and
- a communications transceiver coupled to the controller;
- wherein each VLF transmitter node is positioned less than one wavelength of a desired very low frequency from another VLF transmitter node;
- wherein data to be transmitted is received by the communications transceiver in each VLF transmitter node and stored in the data buffer in each VLF transmitter node;
- and
- wherein each respective VLF transmitter node transmits the data in the data buffer of the respective VLF transmitter node with phasing or timing.
8 more elements
Dependencies are inferred from the claim text.