The purpose of this presentation is to update RTCM participants on the current status ofrnthe Distress Alerting Satellite System (DASS), a satellite-based distress alerting systemrnusing equipment carried on the next-generation Global Positioning System (GPS)rnconstellation.rn1. The primary focus of DASS will be on civil search and rescue (SAR) satellite distressrnalerting.rn2. DASS is currently being developed in a multi-agency effort involving NASA, NOAA, thernUSCG, the Department of Defense, and the Department of Energy.rn3. DASS will augment the existing Cospas-Sarsat international satellite distress alertingrnsystem by equipping GPS satellites with a 406 MHz "bent pipe" repeater able to receivernand relay these distress alerts.rn4. DASS is intended to provide:rn5. Highly reliable near-real-time alerting with identification and locationrn6. Redundant coverage with multiple satellites for improved detectionrn7. Up to three means of accurate location determinationrn8. DASS represents a dramatic breakthrough in the potential to save lives and property,rnreduce risks to rescue personnel, and reduce rescue costs.
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