Find a Security Clearance Job!


Tactical Electronic Reconnaissance Processing and Evaluation System [TERPES] AN/TSQ-90D(V)

The Tactical Electronic Reconnaissance Processing and Evaluation System [TERPES] AN/TSQ-90D(V) is a key segment of the Marine Air-Ground Intelligence System (MAGIS) with the capability to process digital Electronic Warfare Support Measures (ESM) data collected and Electronic Countermeasures data recorded by the EA-6B aircraft.

TERPES provides intelligence processing, mission planning and post mission analysis in support of Marine EA-6B and the Tactical Electronic Warfare Squadron (VMAQ). TERPES supports Department of Defense (DoD) goals of Command, Control, Communication, Intelligence (C3I). This task is accomplished by analyzing Electronic Intelligence (ELINT) and Electronic Warfare (EW) data collected by the Marine Corps' EA-6B Improved Capability (ICAP)-II aircraft. TERPES has the capability to process EA-6B information recorded in flight during operational missions. This data contains emitter position, identification and parametric information. A tactical intelligence database is maintained and ELINT analysis support is provided to the Aviation Combat Element (ACE) and the Command Element of a Marine Air-Ground Task Force (MAGTF) to determine the nature of the enemy threat and plan combined arms operations. Collected intelligence data and multi-source information serves as the primary source of ELINT and EW data for intelligence fusion, command and control, and Department of Defense tactical mission planning systems.

TERPES develops, maintains and distributes a tactical Electronic Order of Battle (EOB). As a SIGINT resource TERPES provides information to the MAGTAF, and is required by EA-6B aircraft to complete the Marine Tactical Electronic Warfare Squadron (VMAQ) mission to provide electronic Warfare (EW) analysis and reporting in support of the Fleet Marine Force (FMF). Data link or secure voice interfaces with AN/MSC-63A Tactical Communications Central (TCC), Tactical Aircraft Mission Planning, System (TAMPS), TEAMS system, Intelligence Analysis System (IAS), Tactical Air Command Center (TACC), Tactical Air Operations Center (TAOC), Tactical Information Broadcast Service (TIBS), Tactical and Related Applications (TRAP), Tactical Data Information Exchange Service (TADIXS-B), the TADIL A (Link 11) and TADIL B (Link 11B) networks, and the EA-6B to allow rapid dissemination of information to requesting units.

The processed ESM data results in Electronic Intelligence that is used by the Marine Air-Ground Task Force to determine the extent of the enemy threat and to plan combined arms operations. Man-Machine Interface is accomplished using independent rack-mounted color monitors and multi-function keyboards for each processing station. Integral and multi-media storage devices are available at each work- station/file server. Outputs are in electronic message formats, hard copy, or electronic media.

The TERPES ultimately provides electronic reconnaissance reports to tactical commanders and the Intelligence Analysis System (IAS) within the MAGIS via tactical data links and other forms of digital communications. The AN/TSQ-90D(V) is a two shelter system and is an upgrade to the AN/TSQ-90C(V)1, TAM A2537, a three shelter system resulting from Preplanned Product Improvements.

TERPES is employed and supported by the Marine Corps Air Station and VMAQ squadrons. The first two AN/TSQ-90D(V) TERPES (Phase III) systems were fielded during the first quarter of FY93 with the remaining two systems fielded during the second quarter of FY93. The first two fielded systems were delivered to the TERPES WSSA at the Naval Air Warfare Center, Weapons Division (NAWC-WPNS), Point Mugu, California, for Systems Integration Testing, Fleet Evaluation Testing (FET), and initial operator and maintenance training prior to being shipped to the using unit. Subsequent deliveries were to the using units. Three systems are currently assigned to the Marine Corps Air Station, Cherry Point to support the four Marine Tactical Electronic Warfare Squadrons (VMAQ) and as a secondary mission is to provide Electronic Intelligence (ELINT) support to the Marine Air Ground Task Force (MAGTAF). TERPES is theater independent and designed to operate in peace-time, contingency, crisis and low and high-intensity wartime environments.

TERPES Upgrade

The TERPES Upgrade program entails the downsizing of the existing TERPES Phase III by maximizing the use of Government Furnished Equipment; government and commercial Non-Developmental Item software to accomplish its missions by processing, evaluating, and analyzing collected signals intelligence (SIGINT) and EW information from EA-6B missions; correlating the collected information with other sources of ELINT, Electronic Warfare Support (ES), Electronic Attack (EA), and Order of Battle (OOB) information to provide support to the MAGTF during operations afloat and at FOB; providing enemy EOB, Command, Control and Warfare (C2W) capabilities, ELINT information and reports to the MAGTF; providing C2W mission planning support information to assist Marine tactical aviation elements; and providing C2W information, and Indications and Warnings (I&W) to the MAGTF.

The TERPES Upgrade is contained in transit cases which can be housed in one 8 x 8x 20 shelter. The initial phase of this downsizing is the TERPES Portable Unit (TPU). TERPES Upgrade is being developed under the concept of an open system architecture to provide the flexibility necessary to accommodate future requirements for expansion. The open system architecture uses GOTS/COTS and Non-Developmental Item (NDI) software/hardware. The TERPES Upgrade integrates the TAMPS Core Operating Environment. The TAMPS Core provides a set of software modules which support the common requirements for Mission Planning Modules (MPMs).

TERPES Upgrade shall use the following TAMPS Core modules: Workstation Executive; Database Access and maintenance, Mapping and Overlay System, Mission Planning, Communication Services, and Utilities.

ELINT processing provides near-real-time analysis of technical data, correlation of position reports, and specific unit identification and location used for TERPES database update and report preparation. It also provides for operator-directed, automated processing using multiple sources including EA-6B tapes, EA-6B data link, and externally provided report messages.

The TERPES Upgrade Process and Analysis functions shall be integrated with the TAMPS Core and include the data derived from the CTT as part of the correlation and fusion function. EOB management consists of the generation, entry, storage, retrieval, and manipulation of data provided by various sources. The TERPES Upgrade is capable of creating, accessing, maintaining, and updating the TERPES database within an application program environment. It includes the creation of initial databases, provides update and access control, and serves as the application program interface. Intelligence support may be provided to the squadron, ACE, MAGTF and external activities based on requests received.

The intelligence analysis function provides the capability for TERPES analysis of ELINT data combined with additional IDB intelligence data to respond to requests for information, prepare database updates, analyze the threat and tactical situation, and to predict potential changes in the tactical situation. It includes a fully relational Structured Query Language (SQL) server capable of rapidly retrieving and graphically displaying threat and tactical information.

Mission planning support consists of a mission preparation package resulting from the POL tape modifications. The mission planning support function provides the capability to support EA-6B data link operation and a limited capability to edit TEAMS-produced OPL tapes to reflect recent changes contained in the TERPES DB.


1967 - Fielded as AN/TSQ-90
1973 - AN/TSQ-90 designated as the interim TERPES
1978 - First AN/TSQ-90, TERPES delivered.
1993 - FOC AN/TSQ-90D(V) 1994 - TERPES Upgrade Program Defined

Related Programs

Operating Units


  • MCAS Cherry Point NC
  • MCAS Iwakuni, Japan

Join the mailing list

Unconventional Threat podcast - Threats Foreign and Domestic: 'In Episode One of Unconventional Threat, we identify and examine a range of threats, both foreign and domestic, that are endangering the integrity of our democracy'

Page last modified: 28-07-2011 00:51:22 ZULU