Advanced Acoustic Concepts (AAC) will develop a spread spectrum waveform for use with the Continuous Active Sonar (CAS). CAS uses the AN/SQS-53C as the sonar source operating at 100% duty-cycle. It then uses a Multi-Function Towed Array (MFTA) as the receiver. This is an ideal application for a spread spectrum waveform as the largest reduction in transmit power is achieved using the highest pulse compression which in turn is achieve through use of very high duty cycle waveforms. AAC will provide analysis of system performance in reverberation, acoustic intercept vulnerability, and processing load estimates.
Keywords: Frequency Hop, Frequency Hop, Continuous Active Sonar, Phase Coding, Spread Spectrum, Asw, Pulse Compression, Waveform Design
