15: APL-UW Deep Water Propagation 20152017: Philippine Sea Data Analysis

Philippine Sea Analysis Our approach utilizes a combination of at-sea measurements, theoretical modeling and computational simulations. Our primary measurements are two 60 h transmission exercises over a range of roughly 500 km. We transmitted the signals: the acoustic receptions (and associated receiver details) are provided by Worcester at Scripps, and the environmental measurements at the receiver provided by Colosi at the Naval Postgraduate School. One exercise used the HX554 source and a signal with carrier frequency 81.88 Hz, and the other used the “multiport” source[1] and two simultaneous signals with carriers at 200 and 300 Hz. Each multiport signal had its own m-sequence law, allowing complete separation of the two signals in code space. Here, we assume the acoustic wave equation is valid, and use Monte Carlo simulations as guides — and benchmarks — for analytical expressions describing the evolution — i.e., the “physics” — of statistical properties of the acoustic wavefield.