Defense Advanced Research Projects AgencyTagged Content List

Space Systems

Unmanned space systems, including vehicles, robotics and supporting technologies, as well as technologies for space situational awareness

Showing 32 results for Space + Satellites RSS
DARPA’s Experimental Spaceplane program (formerly known as XS-1) aims to build and fly the first of an entirely new class of hypersonic aircraft that would bolster national security by providing short-notice, low-cost access to space. The program aims to achieve a capability well out of reach today—launches to low Earth orbit in days, as compared to the months or years of preparation currently needed to get a single satellite on orbit. Success will depend upon significant advances in both technical capabilities and ground operations, but would revolutionize the Nation’s ability to recover from a catastrophic loss of military or commercial satellites, upon which the United States today is critically dependent.
| Cost | Launch | Space |
The traditional process of designing, developing, building and deploying space systems is long, expensive and complex. These difficulties apply especially to the increasing number of expensive, mission-critical satellites launched every year into geosynchronous Earth orbit (GEO), approximately 22,000 miles above the Earth. Unlike objects in low Earth orbit (LEO), such as the Hubble Space Telescope, satellites in GEO are essentially unreachable with current technology.
Hundreds of military, government and commercial satellites reside today in geosynchronous Earth orbit (GEO) some 22,000 miles (36,000 kilometers) above the Earth—a perch ideal for providing communications, meteorology and national security services, but one so remote as to preclude inspection and diagnosis of malfunctioning components, much less upgrades or repairs. Even fully functional satellites sometimes find their working lives cut short simply because they carry obsolete payloads—a frustrating situation for owners of assets worth hundreds of millions of dollars.
Dense constellations of low-earth-orbit (LEO) micro-satellites can provide new intelligence, surveillance, and reconnaissance (ISR) capabilities, which are persistent, survivable and available on-demand for tactical warfighting applications. The Small Satellite Sensors program seeks to explore new sensor concepts that are well-matched to the capabilities achievable in small satellites.
Today, the lowest echelon members of the U.S. military deployed in remote overseas locations are unable to obtain on-demand satellite imagery in a timely and persistent manner for pre-mission planning. This is due to lack of satellite overflight opportunities, inability to receive direct satellite downlinks at the tactical level and information flow restrictions.