Key system design factors:
The NPOESS SafetyNetTM architecture provides:
o Frequent downlinks and maximizes contact duration (>100% margin) at low cost,
o Downlink bandwidth margin that allows all Stored Mission Data to be down linked to two separate receptors and
o Minimal latency impacts from loss of multiple ground receptors.
Other notable characteristics of SafetyNetTM:
o Simple, receive-only, Ka Band receptor design provides autonomous operations
o Fifteen locations in ten countries; full-motion to track polar satellites
o Reliable and timely collection, delivery and processing of quality data
o 75% of NPOESS data products delivered to the US's weather centrals within 15 minutes; the rest in under 30 minutes
Presentation will show:
� A graphic of SafetyNetTM within the NPOESS program architecture
� A depiction of the NPOESS data download scheme
� A map of the worldwide SafetyNetTM receptor locations
� A graph of the percent of NPOESS Environmental Data Records (EDRs) versus time from observation to delivery
� A example chart of the NPOESS data downlink patterns to SafetyNetTM receptors
� Example photos of SafetyNetTM receptor antennae and radomes
Supplementary URL: