JMAPS
Abstract
Joint Milli-Arcsecond Pathfinder Survey (JMAPS) satellite program. Joint strike operations require extremely accurate Positioning, Navigation, and Timing (PNT) systems in order to both: locate hostile threats with space-borne Intelligence Surveillance and Reconnaissance (ISR) systems, and then to deliver ordnance on targets. The Navy provides a key component of PNT - the Celestial Reference Frame. This reference frame is defined in star catalogs that are used in conjunction with star trackers to determine orientation of space-based sensors to minimize location error and the resultant weapon system delivery accuracy. The accuracy of star positions (hence weapon delivery accuracy) is degrading with time due to the movement of stars since the last highly accurate space-based measurements of star positions were made in 1991. The accuracy of the catalog is approaching the minimum necessary to support current requirements, and will not meet the needs for future sensors and weapon systems. Therefore, the Navy, in concert with other agencies in the Space and ISR communities, is developing JMAPS to satisfy the emerging requirements for a new high accuracy star catalog through a space-based astrometry mission. It will also "pathfind" new star tracker technology as a risk reduction for future ISR systems. Producing star catalogs with sufficient accuracy to meet these requirements can only be done from satellites due to atmospheric interference on ground-based systems and the physical limitations of aircraft.
Document Details
- Document Type
- Project
- Publication Date
- Oct 01, 2011
- Source ID
- 3229_0603207N_4_1319_PB_2011
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