Global Positioning System III - Operational Control Segment

The Global Positioning System III - Operational Control Segment (GPS III OCX) is a significant initiative under the Space Force's Research, Development, Test & Evaluation efforts. This program aims to enhance command and control capabilities for both legacy and GPS III satellites. Key objectives include integrating situational awareness to support Navigation Warfare (NAVWAR), enabling mission capability upgrades, and incorporating Department of Defense information assurance and cybersecurity controls. Additionally, the program focuses on providing Regional Military Protection (RMP) to strengthen GPS resiliency against potential jamming threats.

OCX Block 3F is an upgrade designed to support the next generation of GPS IIIF satellites. It aims to incorporate new capabilities such as high-powered military signals for enhanced protection in contested environments. This upgrade ensures backward compatibility with existing systems while introducing functionalities like rapid reconfiguration of satellites for time-critical warfighter effects. The program also supports auxiliary payloads, including Search and Rescue (SAR) and Nuclear Detonation Detection Systems (NDS), ensuring comprehensive operational capabilities.

Development efforts for OCX include extensive engineering studies, system development, and modernization initiatives. These activities are crucial for resolving obsolescence issues and ensuring that the system meets Joint Requirements Oversight Council-approved capabilities. The program also involves pre-operational support activities and interim contractor support to maintain system performance requirements and facilitate a smooth transition to long-term sustainment.

In addition to technical advancements, the program emphasizes cybersecurity resilience and situational awareness necessary for operations in contested space domains. This includes ongoing software updates, cybersecurity patches, and integration testing with GPS IIIF space vehicles. The acquisition strategy employs an agile software development approach to ensure timely delivery of capabilities while maintaining alignment with broader GPS Enterprise Modernization efforts.