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US 11,942,982 B2Granted
Tactical/legacy waveform obfuscation through independent spreading overlay
AssigneeL3Harris Technologies, Inc.
InventorsNicholas T. Yaskoff, Osama S. Haddadin
Life of this patent
Estimating the term…
Abstract
Communicating using spread spectrum. A legacy RF signal is intercepted from a legacy radio. Spread spectrum processing is performed on the legacy RF signal to create a spread signal. The spread signal is transmitted to a receiver, whereafter the spread signal is de-spread to recover the legacy RF signal.
Claims19
A method of communicating using spread spectrum, the method comprising:
- intercepting, by a spread spectrum module carried by a drone, a legacy radio frequency (RF) signal wirelessly transmitted from a legacy transmitter at a first node, the legacy transmitter being configured to wirelessly transmit the legacy RF signal to other nodes in a network, where the legacy RF signal is not a spread spectrum signal, wherein the legacy transmitter and the spread spectrum module are implemented as separate devices remote from each other;
- performing, by the spread spectrum module, spread spectrum processing on the legacy RF signal to generate a spread spectrum signal;
- and
- wirelessly transmitting, by the spread spectrum module, the spread spectrum signal to a legacy receiver at a second node of the other nodes in the network to recover the legacy RF signal after the spread spectrum signal is de-spread by a de-spread spectrum module coupled to the legacy receiver.
1 more element
A method of communicating using spread spectrum, the method comprising:
- receiving, by a de-spread spectrum module carried by a drone, a spread spectrum signal of a legacy radio frequency (RF) signal from a spread spectrum module;
- performing, by the de-spread spectrum module, de-spread spectrum processing on the spread spectrum signal to recover the legacy RF signal;
- and
- wirelessly providing the recovered legacy RF signal to a legacy receiver remote from the de-spread spectrum module, wherein the legacy receiver being a ground based receiver, and wherein the de-spread spectrum module, the spread spectrum module, and the legacy receiver are being implemented as separate devices remote from each other.
1 more element
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.
3 more elements
Dependencies are inferred from the claim text.