Harris Awarded Contract Action for Four AN/SPS-48G(V)(1) Radar Modification Kits

Harris Corp. is being awarded a action on a fixed-price-incentive-firm target basis, as a modification to a previously awarded contract for the production of four AN/SPS-48G(V)(1) radar modification kits for the U.S. Navy.

The contract action, worth around $25 million, was awarded by the U.S. Naval Sea Systems Command (NAVSEA) located in Washington, District of Columbia. Fiscal 2018 other procurement (Navy) for the amount will be obligated at time of award and will not expire at the end of the current fiscal year.

The contract work will be performed in Van Nuys, California, and is expected to be completed by January 2020.


The AN/SPS-48G is a long-range, three-dimensional (3D), air search radar that is progressively being installed on CVN, LHA, LHD and LPD classes of ships, replacing the AN/SPS-48E. The program of record is to backfit the existing AN/SPS-48E population with the AN/SPS-48G variant from 2011 through 2021, and to keep this system operational through the year 2050. As of the end of 2016, the AN/SPS-48G is already installed or in the process of installation aboard CVNs 68-72, CVNs 74-76, LHDs 1-3, LHD 7, LHA 7 and LPDs 26-27.

The AN/SPS-48G is used to provide full volumetric detection data for the Ship Self Defense System (SSDS) via the Cooperative Engagement Capability (CEC) or the SYS-2 tracker; Air Intercept Control; Anti-Ship Cruise Missile detection including low elevation and high diver targets; backup aircraft marshalling; and the new Hazardous Weather Detection and Display Capability.


AN/SPS-48 is a US naval electronically scanned array air search three-dimensional radar system manufactured by ITT Exelis and deployed in the 1960s as the primary air search sensor for anti-aircraft warships.

The deployment of the AN/SPY-1 and the end of the Cold War led to the decommissioning of a large number of such ships, and many of these vessels AN/SPS-48 sets were reused on aircraft carriers and amphibious ships, where it is used to direct targets for air defense systems such as the Sea Sparrow and RIM-116 SAM missiles.

According to ITT Exelis, the system has a range exceeding 200 nmi (370 km) and can track targets up to 69 degrees in elevation. The AN/SPS-48E is capable of providing target range, bearing and altitude information using a frequency-scanning antenna using a range of different frequencies in E band and F band with three power modes: high, medium and low. SPS-48 radars stack multiple beams in a train of pulses at different frequencies. The beams scan different elevation areas, allowing the stack to cover up to 69 degrees of elevation.

It is the predecessor of the AEGIS system currently in use on Arleigh Burke-class destroyers and Ticonderoga-class cruisers. The AEGIS AN/SPY-1B/D radars are electronically scanned phased arrays, while the SPS-48E is frequency scanned in elevation, and mounted on a rotating joint that spins the radar in azimuth. The AN/SPS-48 is carried by US Navy ships such as Nimitz-class aircraft carriers, Wasp-class amphibious assault ships, Tarawa-class amphibious assault ships and San Antonio-class amphibious transport docks.

Existing sets are being modernized under the ROAR program to AN/SPS-48G standard for better reliability and usability.

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