In FY 77, a Naval Ocean System Center (NOSC) IR project, Advanced Research in Surveillance (NOSC IR 714009, DTIC 788 518) was undertaken to find ways to improve the product delivered by surveillance information-processing systems. This program provided the initial impetus for NOSC and others to examine the benefits to the ocean surveillance product (OSP) that could be obtained through multisource integration. Mainly through analysis of the Church Pedal experiment, the IR project found that improvements to the OSP could be obtained through cross-sensor correlation of data, through use of currently discarded data, and through cueing of sensors. This IR project transitioned to the Naval Electronics Systems Command (NAVELEX)-sponsored Multisensor Interaction 6.2 project where further algorithmic work was pursued by NOSC.
One result of the NOSC IR project’s analysis of the Church Pedal exercise was the realization that improved usage of electronic intelligence (ELINT) data could contribute to the quality of the OSP. Additional exercises were held in the FY 77–79 time period, including Church Calm and Post Oak, which featured collection and analysis of ELINT data. Also, in FY 79, NOSC initiated an Independent Exploratory Development (IED) project, Ocean Surveillance Information Processing and Modeling (NOSC ZD49, DTIC ICZD 4900), which examined the way sensor data were being processed by OSIS and identified areas in which algorithmic approaches could improve the timeliness and accuracy of the OSP. ELINT was one of the areas identified. Based on these results, the IR project principal investigator developed and tested a statistical ELINT correlation algorithm that became Target Recognition by Extraction of Statistical Attributes (TERESA) under NAVELEX sponsorship in 1981. TERESA has impacted many fleet systems. It was directly incorporated into OBU and later became the basis for ELINT correlation approaches in the Advanced Tactical Workstation (ATW), in the Tomahawk Weapon Control System, in the Naval Tactical Command System–Afloat (NTCS–A), in the Joint Maritime Command Information System (JMCIS), and ultimately in the joint services’ Global Command Control System (GCCS).
The NOSC Ocean Surveillance Tracker Correlator (OSTC) was a testbed for various surveillance multisource integration concepts and algorithms. OSTC led to bringing multisensor integration to the Ocean Surveillance Information System (OSIS) Centers in the mid 1980s via the OSIS Baseline Upgrade (OBU) Program, with TRW as the prime developer. 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 (TADIXS).