ARSR-4 Replacement - Hawaii

Abstract

This budget line item funds the replacement of the current Hawaii Air Route Surveillance Radar Version 4 (ARSR-4) to include prototype development, test, site preparation, and installation. The replacement radar will address DoD capability gaps driven by new threats and provide dual use for Hawaii Air Traffic Control (ATC) and weather monitoring. The new system is designated the ARSR-4 Replacement Hawaii (ARSR4R-HI) Long Range Radar (LRR). It is a key component of the USAF's defense of Hawaii as a high priority mission for the DoD and supports NORAD/NORTHCOM and PACAF/INDOPACOM Deterrence Initiatives. The ARSR4R-HI program is part of an integrated Homeland Defense surveillance against air cruise missiles while maintaining the ATC capability required by both the Federal Aviation Administration (FAA) and the Department of Defense (DoD). The ARSR4R-HI program is established to address the following surveillance shortfalls: 1. Lack of surveillance capabilities to meet today's mission needs such as inability to characterize and classify targets or cover all required airspace. 2. Inability to scale and update capabilities to pace evolving threats. 3. Obsolescence associated with 1980s era ARSR-4 equipment and infrastructure leading to excessive sustainment, operations, and maintenance costs. To address these surveillance shortfalls, development of the ARSR4R-HI system will consist of improved detection performance for modern air threats, mitigate new interference sources, and utilize state of the art surveillance technologies and processing capabilities. The ARSR4R-HI effort will solidify the solution as a non-rotating, multi-panel, phased array radar system which provides persistent surveillance with improved accuracy and detection performance supporting an advanced engagement sequence to counter modern threats with target cueing and fire control quality data. The ARSR4R-HI consists of a ground based radar, associated shelters, and other smaller Government Furnished Equipment (GFE) items. The DoD currently owns the site for the location of the installation and the FAA leases the site. The FY2025 effort includes the award of two vendor contracts for Rapid Prototype Development and Demonstration followed by down-select to a single vendor for Non-Recurring Engineering (NRE), mature prototype delivery, installation, integration with Command and Control (C2) nodes, and test of the new radar at the Mt. Ka'ala site. The current schedule reflects a 4th Qtr FY27 IOC date however, the FY24 new start schedule delay and long lead time for critical components, identified in preliminary market research, may move the IOC date to the right. Final determination of a realistic IOC will be determined upon receipt of vendor demonstration proposals and Integrated Master Schedules in 4th Qtr FY24. The total cost of the ARSR4R-HI Middle Tier of Acquisition effort is $310.242M, including RDT&E and procurement of prototype unit. ARSR4R-HI is not fully funded across the Future Years Defense Program. The Department of the Air Force is assessing all options to address the funding shortfalls for MTA programs including additional funding in a future budget request, performance trades based on technical maturity, or transition to alternative pathways. This program element may include necessary civilian pay expenses required to manage, execute, and deliver weapon system capability. The use of such programs funds would be in addition to the civilian pay expenses budgeted in program element 0605827F, 0605828F, 0605829F, 0605831F, 0605832F, 0605833F, 0605898F, 0606398F. In FY23, $0.000M was expended for civilian pay expenses in this program element, and in FY24 $2.952M is forecasted for civilian pay expenses in this program element. This program is in Budget Activity 7, Operational System Development because this budget activity includes development efforts to upgrade systems that have been fielded or have received approval for full rate production and anticipate production funding in the current or subsequent fiscal year.

Document Details

• Document Type: Project
• Publication Date: Oct 01, 2025
• Source ID: 673587_0604283F_7_3600_PB_2025

Tags

Readers

• Aviation Safety and Air Traffic Management
• Civilian Systems Systems Program Capability Development and Upgrade Support Activity Expense and Pay Management.
• Unmanned Aerial System (UAS) Autonomous Capabilities and Mission Reconnaissance.

Technology Areas

• Fully Networked C3
• Fully Networked C3 - Command and Control
• Space