Quantitative Sediment Mapping: Surveys of Geoacoustic Properties Affecting Munitions Burial, Mobility and Detection
Abstract
The project objective was to measure sediment properties and their uncertainties that affect munitions mobility, burial, and detectability in underwater environments. Building on a prior work, significant advances were made including theoretical and computational aspects of sequential Bayesian inversion. Sequential algorithms quantify the information content of consecutive data sets by considering results from previous data sets along a survey track to inform the importance sampling at the current point. Therefore, efficient transition between data sets is of paramount importance. The most significant new theoretical advance is a novel particle filter that bridges between consecutive data sets via trans-dimensional parallel tempering. The success of this implementation is significant since it generalized the particle filter to a unified trans-dimensional algorithm. The anticipated benefits of this research are expected to go beyond the specific application in this project (water depths less than 35 m, the upper few meters of sediment) and could be used in many applications where quantitative seabed properties are needed. Depending on the frequencies and measurement geometry, the measurement and processing techniques could be exploited to obtain high-resolution geoacoustic properties in arbitrary water depths and to tens of hundreds of meters in the seabed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2018
- Accession Number
- AD1076512
Entities
People
- Eric Mandolesi
- Jan Dettmer
- Sheri Martinelli
- Stan E. Dosso
- W. Charles (Wilbur) Holland, Jr.
Organizations
- Pennsylvania State University