What does TADIXS stand for?

This resulted in VAX-based systems, which were followed in the early 1990s by the Space and Naval Warfare Systems Command (SPAWAR)-sponsored OSIS Evolutionary Development (OED) Program to move the system to a workstation architecture. Currently, INRI, Inc. , is involved in further OED work that will result in improved software for the Joint Maritime Command Information System (JMCIS). TRW Systems Integration Group (SIG) is currently upgrading the Navy's Ocean Surveillance Information System under the Ocean Surveillance Information System (OSIS) Baseline Upgrade (OBU) / OSIS Evolutionary Development (OED) efforts. The Fleet Ocean Surveillance Information Facilities [FOSIF] and Centers [FOSIC] use the Ocean Surveillance Information System as their Tactical Data Processors (TDPs) to support the exchange of Over-The-Horizon Targeting (OTH-T) information between shore and fleet-based computer systems through the Tactical Data Information Exchange Subsystem.