These technologies enhance the signals and systems used for maritime communications. The first uses a demodulator to improve the Automatic Identification System (AIS) used for ship tracking, collision avoidance, and search and rescue. The demodulator can function on a signal that transmits data at a known baud rate but has an unknown carrier frequency, unknown carrier phase, and unknown preamble, reducing the risk of at-sea collisions. The second technology improves demodulating AIS signals without requiring user-specific training codes or an equalizer, which enhances favorable signal qualities and decorrelates interfering signals.
Potential applications include: ship or drone tracking and collision avoidance, water-based search and rescue, and port security.
- Also can demodulate an AIS signal having an unknown carrier frequency and phase in the presence of interference
- US patents 8,665,997 and 8,275,077 available for license
- Potential for collaboration with NSA scientists and engineers