XTIM
Abstract
XTIM is an autonomous system of determining timing and positioning of space assets using X-ray pulsars and then broadcasting this information for navigation and time uses independent of, and supplemental to, GPS. XTIM autonomously calculates its position and absolute time from celestial sources. XTIM then broadcasts this information to users either on the ground or in space as a method to enhance their navigation solutions. In addition, XTIM reference data can be used to update the GPS constellation ephemerides and timing with limited or no ground support. XTIM also provides an alternative timing source that can be used as a checksum for GPS receivers to insure detection of spoofing or sophisticated jamming attacks. XTIM leverages previous work by DARPA which analytically demonstrated that X-ray pulsars could be used for navigation of space assets. XTIM will create a truly autonomous and universal time reference for military navigation and communication needs. The anticipated transition partner is the Air Force.
Document Details
- Document Type
- Accomplishment
- Publication Date
- Oct 01, 2012
- Source ID
- abbe191d44dd658946d6e92883786467