SBIR-STTR Award

The Multiple Access Active Sonar (MAAS) program utilizes a unique algorithm to design frequency hopping chip sequences and associated processing to provide wideband waveforms which are extremely robust to the presence of reverberation, doppler, multipath, and interference from other in-band signals. The waveforms, and their related specialized processing algorithms, are applicable to all forms of active sonar, including multistatic systems. Generation of frequency hopping waveforms, and subsequent processing of the echoes are computationally inexpensive, and initial algorithms have successfully been incorporated into in-buoy hardware for air ASW demonstrations.

Keywords:
Frequency-Hopping Asw Ambiouity Function Range Rate Resolution Doppler Sonar

The Multiple Access Active Sonar (MAAS) program utilizes a unique algorithm t design frequency hopping chip sequences and associated processing to provide wideband waveform that are extremely robust to the presence of reverberation, Doppler, multipath, and interference from other in-band signals. The waveforms and their related specialized processing algorithms are applicable to all forms of active sonar including multi-stat systems. Generation of frequency hopping waveforms and subsequent processing of the echoes are computationally inexpensive, and initial algorithms have successfully been incorporated into in-buoy hardware for air ASW demonstrations. The Phase I effort demonstrated through simulation and analysis is feasible. The Phase II effort will verify the predicted performance in the laboratory and through at-sea tests, and carry the development to the point that commercialization could be economically completed.

Keywords:
Frequency Hopping Asw Range Rate Doppler Sonar Ambiguity Function Resolution