US 11,942,982 B2
Tactical/legacy waveform obfuscation through independent spreading overlay
Nicholas T. Yaskoff, Cottonwood Heights, UT (US); and Osama S. Haddadin, Salt Lake City, UT (US)
Assigned to L3HARRIS TECHNOLOGIES, INC., Melbourne, FL (US)
Filed by L3Harris Technologies, Inc., Melbourne, FL (US)
Filed on Jan. 11, 2022, as Appl. No. 17/300,316.
Prior Publication US 2023/0223983 A1, Jul. 13, 2023
Int. Cl. H04B 1/7103 (2011.01); H04B 7/185 (2006.01); H04L 5/14 (2006.01); H04L 27/14 (2006.01)
CPC H04B 1/7103 (2013.01) [H04B 7/18504 (2013.01); H04L 5/14 (2013.01); H04L 27/14 (2013.01)] 19 Claims
OG exemplary drawing
 
15. A drone carrying a spread spectrum module configured to communicate using spread spectrum, the spread spectrum module comprising:
circuitry configured to receive a legacy radio frequency (RF) signal wirelessly from a ground-based legacy transmitter which is physically separated from the spread spectrum module such that the spread spectrum module and the legacy transmitter are remote from each other;
an analog to digital converter configured to sample the received RF signal;
a pseudo noise code generator configured to generate pseudo noise codes;
a spread spectrum circuit configured to perform spread spectrum processing on the sampled RF signal to generate a spread spectrum signal based on the pseudo noise codes; and
an antenna configured to transmit the spread spectrum signal to a de-spread spectrum circuit of a drone carrying a second spectrum module, wherein the spread spectrum signal is de-spread by the de-spread spectrum circuit and send a de-spread spectrum signal to a legacy receiver to recover the legacy RF signal.