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 90 results for Space RSS
More than 7,000 spacecraft have been launched from Earth, the vast majority of which are satellites that are no longer operational. These defunct objects, now free-orbiting debris, threaten the more than 1,200 satellites that are currently operated by commercial and government entities around the globe. The number of space debris that threaten important communications, weather monitoring, navigation services and imagery satellites is growing.
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.
Due to advancements in component technology, microsatellite systems are increasingly viable solutions to address earth science and remote sensing missions. For example, constellations of commercial, small, optical satellites are proliferating, supporting a variety of tasks and data applications. The ability to economically launch microsatellites on diverse launch vehicles promises advantages in rapid technology refresh, responsive space operations, and resilient (i.e., redundant) systems.
| Space |
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.