BLQ-10

AN/BLQ electronics racks

AN/BLQ-10, usually co-installed with the AN/ULR-21 CLASSIC TROLL signals intelligence exploitation system, systems are comprehensive passive electronic warfare and signals intelligence suites for U.S. submarines of the Los Angeles, Seawolf and Virginia classes. The U.S. Navy issued a requirement in 1991, development began in 1994, operational evaluation in 2000, and is in continuous incremental development.

The systems have standard interfaces, including the Joint Maritime Command Information System, connected to the Global Command and Control System-Maritime. When the submarine is on an intelligence-gathering assignment, transportable equipment appropriate for the mission is usually brought aboard and connected to the BLQ-10/ULR-21.

Not including antennas, it physically occupies five full-height 19" racks, two of which contain displays and keyboards, although information may be sent to other tactical displays.

Functions

Information presentation includes:

Mission Tasking Threat Warning/Mission Tasking Display 2nd Tier Tasking Display Quick Search Primary Threat Warning Signal Alerts and Summary Display Early Warning Panel Quick Search Secondary Threat Warning Geographic Display Identification Confidence Display Precision and Communications Direction Finding Signal Alerts and Summary Displays Geographic Display Direction finding Plots Display Reports Display Signal Alerts and Summary Display Analysis/Situation Assessment Signal Exploitation Receiver Control Contact Manager Tactical Readiness Evaluation Display Geographic Situation Non-Interest Signals Systems replaced AN/WLQ-4 ELINT system AN/WLQ-8 radar warning receiver AN/BLD-1 precision radar direction finding References