Sub-on-Sub Simulation - ASOSM

Naval Forces Division, OASD; Washington, DC

ASOSM is a two-sided, symmetric 3000-line model used to evaluate candidate submarines, sensors, and weapons in key antisubmarine roles. It is designed for analysis of "one-on-one" submarine engagements.

The model permits analyses based on ambient noise and propagation loss data for 20 ocean areas, summer and winter seasons, 3 receiver depths, and target depths. Long term and short term environmental effects are also modeled.

In a one-on-one engagement, you can model BLUE attacker versus RED defender, RED attacker versus BLUE defender, BLUE versus BLUE, etc. You can mix and match weapons and sensors in any way imaginable (e.g. a wide-aperature array on a RED sub). The model is primarily used for conventional warfare, but modeling nuclear weapons is possible.

The model supports analysis of the following submarine missions: fixed barrier patrol, aided area search, unaided area search, transit area, and leave area. It has a fairly high degree of detail for submarines, sensors, and weapons. Processes are used to model submarine tactics, sensor performance, weapons use, boundary constraints, status display, and ocean noise fluctuations. Sonar equations are modeled in detail.

Inputs include secret data files for submarine self-noise, tactical speeds, sensor performance parameters, and weapons characteristics as well as ambient noise and propagation data loss.

Outputs include a graphical display of engagements as they progress using SIMGRAPHICS, a final report that summarizes model inputs (scenario) and results for all replications, and optional events summary and detection report.