Exploring whether compact particle-motion sensing can bring low-frequency direction-of-arrival capability to distributed maritime systems without the footprint of a conventional wavelength-scale array.
The underlying patents are U.S. Navy / NRL intellectual property. No patent ownership, license, Navy sponsorship or operational deployment is claimed by this project.
Set a generic surface vessel, submerged vessel or stationary source around a conceptual sensor node, then vary range, bearing, frequency, source level and ambient noise.
Conceptual coupling of low-frequency propagation, particle motion and orthogonal vector response.
The NRL patent family combines a micro/nano mesh particle-motion transducer with floating, moored, viscous-channel and platform-integration concepts intended to recover direction-of-arrival in a compact footprint.
v = p / (ρc)output ∝ cos(θ)δᵥ ≈ √[ μ / (πρf) ]These are potential commercialization pathways for the NRL technology if technical validation and appropriate licensing support them—not claims of existing deployments.
Sonobuoy, UUV/AUV, surface-platform, fixed-node and littoral architectures where compact directionality could matter.
Directional passive acoustic monitoring, ports, offshore infrastructure and environmental observation.
Reproduce the published mesh response and establish a stable readout.
Tank and shallow-water bearing tests against known generic sources.
If rights and performance support it, package the sensing core with an appropriate integration partner.
The patents are assigned to the United States, represented by the Secretary of the Navy. This project currently evaluates commercialization potential; it does not claim patent ownership, a license or exclusivity.
Foundational claims around micro/nano two-dimensional mesh flow sensing for acoustic direction-of-arrival, with multiple deployment embodiments.
Continuation-in-part extending the concept into differently oriented viscous-liquid flow channels, power, memory, telemetry, anchoring and recovery embodiments.
Technology-transfer discussion, inventor call, data inventory, prototype status and claim-level review.
Recreate the published response and characterize readout noise, durability and fabrication repeatability.
Calibrated tank test against a reference sensor; measure sensitivity, bearing error and self-noise.