Secures signal integrity in contested environments.
Sentient Digital developed a novel DSP technique which lightly alters a basic sonar pulse to covertly encode information for the purpose of validation and source deconfliction. This signal modification has low correlation with other messages and is spread out spectrally to make it more challenging to detect, jam, or otherwise interfere with.
SDi developed custom direct blast removal algorithms to greatly improve signal detection performance. The presence of the DSP modification to a sonar signal can be very subtle and conveys very little information to an uninformed observer who does not have the spread spectrum key.
This DSP algorithm was tested in aggressively simulated environments and exceeded detection requirements while constraining sonar performance degradation below the required threshold. The algorithm also demonstrated successful detection when multiple signals collided. SDi has demonstrated basic performance with live in-water detections.
1.
Covert Signal Assurance
Develops low-observable watermarking techniques that embed validation and source identification data while preserving primary signal performance.
2.
Contested Environment Resilient
Designs spectrally distributed and low-correlation encoding methods that are resistant to detection, jamming, and interference.
3.
Advanced Signal Recovery
Validates algorithms through high-fidelity simulation and live in-water testing to ensure detection performance while maintaining mission signal effectiveness.
4.
Proven Operational Performance
Produces actionable insights that inform transducer design, array configuration, and beamforming tradeoffs that accelerate execution and reducing risk.