US 12,207,217 B2
Secure data transmission system and method for targeting specific receiver locations
Michael Civerolo, San Diego, CA (US); Nicholas Lumsden, Escondido, CA (US); Nicholas Johnson, San Diego, CA (US); and Christopher Lichtenberg, San Diego, CA (US)
Assigned to United States of America as represented by the Secretary of the Navy, Washington, DC (US)
Filed by United States Government as represented by the Secretary of the Navy, San Diego, CA (US)
Filed on Feb. 4, 2022, as Appl. No. 17/650,029.
Prior Publication US 2023/0254797 A1, Aug. 10, 2023
Int. Cl. H04W 56/00 (2009.01); H04W 88/00 (2009.01)
CPC H04W 56/005 (2013.01) [H04W 56/006 (2013.01); H04W 88/00 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A secure data transmission system, comprising:
a time multiplexer for receiving an input data stream and providing a plurality of output data streams, and further comprising:
a multiplexing sequence for multiplexing the input data stream,
a multiplexing digital switch for receiving the input data stream and dividing the input data steam into the plurality of output streams, and
a plurality of empty vectors for conveying the plurality of output data streams;
a time delay unit connected to the time multiplexer, wherein the time delay unit delays each of the plurality of output data streams for alignment only at an instantaneous receiver location, and further comprising:
a range calculator for calculating distances between each of the plurality of transmitters and the instantaneous receiver location,
a delay estimator connected to the range calculator, and
a plurality of stream time delays connected to the delay estimator;
a receiver tracker connected to the time delay unit for providing the instantaneous receiver location, wherein the instantaneous receiver location is global positing system coordinates;
a plurality of transmitters connected to the time delay unit for transmitting the plurality of output data streams to the instantaneous receiver location; and
a phase alignment block for phase shifting the input data stream, wherein the input data stream is a coherent waveform.