Abstract
Natural disasters and terrorist acts have significant potential to disrupt emergency communication systems. These emergency
communication networks include first-responder, cellular, landline, and emergency answering services such as 911, 112, or 999.
Without these essential emergency communications capabilities, search, rescue, and recovery operations during a catastrophic
event will be severely debilitated. High altitude platforms could be fitted with telecommunications equipment and used to support
these critical communications missions once the catastrophic event occurs. With the ability to be continuously on station, HAPs
provide excellent options for providing emergency coverage over high-risk areas before catastrophic incidents occur. HAPs could
also provide enhanced 911 capabilities using either GPS or reference stations. This paper proposes potential emergency
communications architecture and presents a method for estimating emergency communications systems traffic patterns for a
catastrophic event.