Counterfire Radars

The Counterfire Radars program, as detailed under Army budget line item 8386BA5500, is a critical component of the Army's modernization efforts, specifically supporting the Long Range Precision Fires (LRPF) priority. The program centers on the procurement and modification of the AN/TPQ-53 Counterfire Target Acquisition Radar system, which is designed to detect, classify, track, and locate the origin of projectiles from mortar, artillery, and rocket systems. This capability is essential for providing rapid and accurate counterfire responses, thereby enhancing force protection and operational effectiveness for Brigade Combat Teams (BCTs), Field Artillery Brigades (FABs), and Division Artilleries (DIVARTYs).

A primary objective of the FY 2026 budget request is the procurement and fielding of Distributed Digital Receiver Exciter (DDREX) kits for the AN/TPQ-53 radar system. The DDREX modernization initiative addresses both obsolescence and survivability in electronically contested environments, building upon previous upgrades such as Gallium Nitride (GaN) technology, Signal Data Processor (SDP) 2.0, extended range, and electronic protection enhancements. The DDREX upgrade transitions the radar to a digital architecture, improving electronic protection and survivability through waveform diversity, spectrum agility, and expanded operational bandwidth. This effort is intended to ensure the radar remains effective against emerging electronic attack threats and supports future multi-function radar capabilities.

Modification funding also supports interim contractor services, production, and fielding support for the DDREX kits. Lockheed Martin, based in Syracuse, NY, is the primary manufacturer for these upgrades, with installation scheduled to occur at Lockheed Martin depots. The modification process includes developmental, live fire, and environmental qualification testing, with operational testing planned for completion in FY 2026 and fielding of kits beginning in FY 2029. These investments are justified by the need to maintain system readiness and effectiveness in the face of evolving threats and to comply with statutory requirements for military support to civil authorities and homeland defense missions.

Another key modification funded under this line item is the Inertial Navigation Unit (INU) Upgrade. This upgrade addresses obsolescence in the current INU by integrating a replacement unit with embedded M-Code capable GPS receivers, enhancing system reliability, performance, and supportability. The INU upgrade ensures compliance with public law and maintains the radar's operational effectiveness. Lockheed Martin is also responsible for the INU upgrade, with installation managed by Tobyhanna Army Depot. The scheduled procurement and installation cycles are designed to minimize disruption to operational units while ensuring timely modernization.

Generator/Environmental Control Unit (ECU) Modification Kits are procured to support the operational sustainability of the AN/TPQ-53 system. These kits, manufactured by the Prototype Integration Facility (PIF) at Aberdeen Proving Ground, MD, are installed at Fort Bragg Regional Support Center. The generator and ECU modifications are intended to ensure the radar system remains functional in diverse operational environments, supporting both mobility and survivability requirements.

Remote Control Display Unit (RCDU) Refresh is another major modification funded in this line item, ensuring that the ruggedized laptops used to interface with and control the radar system are kept current with environmental and technical requirements. MILTOPE Corporation, located in Hope Hull, AL, is the manufacturer for these units, with installation also occurring at Fort Bragg Regional Support Center. The RCDU refresh follows a five-year cycle to address aging hardware and maintain system reliability.