Space Systems Prototype Transitions (SSPT)

The Space Systems Prototype Transitions (SSPT) program, managed by the United States Space Force under the Air Force's Research, Development, Test & Evaluation (RDT&E) budget, is designed to address technology and capability gaps in military space operations. Its primary objective is to facilitate the transition of advanced space technology prototypes into operational programs of record. SSPT encompasses activities such as systems engineering, technology planning, development, demonstration, and testing, as well as modeling and simulation to mature tactics, techniques, and procedures (TTPs). The program leverages partnerships across the Department of Defense (DoD), other government agencies, academia, and industry to ensure effective deployment and integration of new technologies into the military space enterprise.

The largest project within SSPT focuses on prototyping and maturing technologies that enable secure, resilient, and flexible communications between space assets. Key goals include developing platforms that provide low-cost, rapid, and flexible on-orbit hosting for multiple prototype payloads. These platforms support technology maturation, operational concept development, and rideshare opportunities to geosynchronous orbit. Recurring demonstrations and experiments are conducted to inform investment and divestment decisions for future space capabilities.

Within this project, several specific initiatives are underway. One program aims to rapidly insert new technologies into operational programs by enabling on-orbit testing and demonstration of prototypes. Planned activities include shipment, launch integration, ground system development, and security accreditation for upcoming missions. Another initiative serves as a pathfinder for future system architectures and operational concepts, supporting Space Domain Awareness (SDA) and Space Control programs. These vehicles also provide training platforms for operators, contributing to the evolution of space operations and alignment with objectives from organizations such as the National Space Test and Training Complex (NSTTC) and Space Training and Readiness Command (STARCOM).

Another significant effort under this project enhances U.S.-Japan cooperation and demonstrates the feasibility of proliferated SDA sensor payloads on both U.S. and non-U.S. satellites. This initiative supports integration and testing of SDA payloads, ground system development, and data communication enhancements, ultimately contributing to the Space Surveillance Network and improving SDA in the geostationary orbit over the Eurasian theater. Additionally, a subproject is developing technologies for system-agnostic, mobile ad-hoc networks, enhancing modem design, and maturing optical communication standards and networking systems in partnership with organizations like MIT Lincoln Laboratory and the Air Force Research Laboratory (AFRL).

Congressional adds in FY 2024 provided funding for small satellite communication technology in geosynchronous orbit. This supports the broader SSPT goal of energizing the space industrial base and fostering innovation in support of national security objectives.

The second major line item is an all-Service, classified, multi-year effort led by the Office of the Under Secretary of Defense for Research and Engineering (OUSD(R&E)). Its objective is to analyze, research, and recommend both material and non-material solutions to the Joint Requirements Oversight Council (JROC). The Space Force's portion of funding supports warfighter analysis, experiments, and the development of modeling and simulation tools to inform future warfighting concepts and requirements. Funds are transferred via Military Interdepartmental Purchase Request to the Space Security and Defense Program (SSDP), adhering to a memorandum of understanding signed by the Vice Chief of Space Operations.