State Estimation Tool for Undersea Systems (SETUS)

In this Phase II SBIR project, Daniel H. Wagner Associates will develop a State Estimation Tool for Undersea Systems (SETUS).SETUS is a set of software modules that provides high fidelity passive sonar state estimation for a target of interest (TOI) by employing sophisticated algorithms to resolve acoustic environmental uncertainty, while refining state estimates based upon all available information. The key technologies underlying SETUS are the Area Statistics approach to quickly and accurately resolve uncertainty in the acoustic environment, and an Agent Based Simulation with Bayesian Weights (ABSBW) which compares both positive information (passive sonar contact) and negative information (lack of passive sonar contact) against a number of simulated target agents to estimate the likelihood any individual agent could have generated that positive and negative information. Preliminary results from Phase I demonstrate that SETUS is capable of making significant improvements to the state of the art of passive sonar state estimation, and the Phase II work will refine and enhance SETUS in preparation for transition to fleet use via the APB process.