DULLES, Va. - Northrop Grumman has been selected by the Defense Innovation Unit (DIU) and U.S. Space Force Space Systems Command to develop a prototype spacecraft for the Geosynchronous High-Resolution Optical Space-Based Tactical Reconnaissance (GHOST-R) program, which aims to provide high-resolution space-to-space imagery of resident space objects in geosynchronous orbit (GEO).
Northrop Grumman will build the spacecraft around its ESPASat-L platform and integrate an optical payload supplied by TRL-11 of Irvine, Calif. The company will assemble, integrate, test, and deliver the GHOST-R prototype to the Space Force on an accelerated 24-month schedule.
GHOST-R is intended to demonstrate a commercially derived approach to close-range reconnaissance of spacecraft in GEO. Rather than relying solely on ground-based sensors or systems that detect and track objects from a distance, the GHOST-R spacecraft will maneuver relative to other spacecraft and collect high-resolution electro-optical imagery.
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That imagery is intended to improve characterization of resident space objects, including their identity, physical configuration, and condition. The program also calls for capabilities supporting positive identification, combat identification, and battle-damage assessment.
Tracking data can establish an object's location and trajectory, while close-range optical observations can show what the spacecraft looks like and whether its configuration or condition has changed. GHOST-R is also intended to demonstrate recurring proximity operations, including drive-by or inclined-track missions, rather than simply observing a target from a fixed orbital position.
Northrop Grumman's approach combines this mission with a spacecraft platform designed for higher-rate production. The company says ESPASat-L is a compact, modular platform that integrates with its ESPAStar payload rideshare architecture. For GHOST-R, Northrop will combine the platform with the TRL-11 optical payload before assembling, integrating, and testing the spacecraft at its Dulles, Va., and Gilbert, Ariz., satellite manufacturing facilities.
Proliferated space awareness
DIU and Space Systems Command are pursuing the GHOST-R effort as part of a broader effort to develop proliferated space-domain-awareness capabilities in GEO. Northrop Grumman and True Anomaly were selected to build prototype spacecraft, with the demonstrations expected to feed into the Space Force's RG-XX reconnaissance program. The two prototype designs are expected to demonstrate high-resolution imagery and recurring observations of target spacecraft.
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Space Systems Command describes RG-XX as a proliferated GEO architecture intended to improve continuity and mission cadence for space-based reconnaissance and surveillance. The program is designed to detect, track, and characterize resident space objects of interest while also supporting anomaly resolution on U.S. spacecraft.
Northrop Grumman also brings experience from the Geosynchronous Space Situational Awareness Program (GSSAP), the company's existing space-based system for observing objects in GEO. GHOST-R represents a different acquisition and architectural approach, combining a commercially derived spacecraft platform and optical payload with an accelerated development schedule and the potential for a larger, more distributed constellation.
The approach reflects a broader Space Force effort to supplement existing space-domain-awareness capabilities with more numerous spacecraft that can increase observation frequency and resilience. For GHOST-R, the immediate objective is to demonstrate that commercially derived hardware can provide the maneuverability, optical performance, and proximity-operation capabilities needed to obtain useful intelligence on other spacecraft in the increasingly contested GEO environment.
