Over-the-Air Distribution (OTD) Update (Briefing Charts)
AIR FORCE SPACE COMMAND LOS ANGELES AFB CA SPACE AND MISSILE SYSTEMS CENTER
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OTAD Overview. OTADOTAR are alternative methods of key distribution. OTAD Next black key sent to user via the GPS navigation message. OTAR Superset of OTAD key sent via the navigation message. Receiver must be on and have a good daily key. If receiver is off or out of keys user obtains next key from COMSEC custodian. OTAROTAD Background. Many users rely on OTAD for distribution of cryptokeys. DAGR SW update released to take full advantage of OTAD and mission constellation operations. 4 years of successful US OTAD broadcasts. Mission constellations allow simultaneous broadcast of multiple OTAD messages. The SAASM Mission Planning System SMPS at the JSpOC performs constellation optimization and assigns OTAROTAD keys to be broadcast from each SV.
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