Back to articleFlow diagram showing SAPIENT system. (1) Fixed transmission from Glenn's IP gateway LAN and Win2k PC to rack local area network (LAN), to Solaris2.7 RAVE computer IP gateway across satellite (fixed-gw.grc.nasa.gov), through point-to-point protocol (PPP) serial-to-IP link and RS 449 high-speed synchronous serial at 2.180 Mbps to CM701 modem, transmission with no spread spectrum to Trans-Atlantic Earth Station Laboratory (TESLa) at Glenn, to GE2 85° west. (2) Fixed transmission from GE2 85° west at 12,020 MHz to TESLa at Glenn, spread spectrum transmission to EB200 modem, transmission at 256 kbps to Solaris2.7 RAVE computer, to rack LAN, and to Win2k PC and Glenn's IP gateway LAN. (3) Airborne transmission from Win2k PC to rack LAN and from DC-8 LAN through RBNB to rack LAN, to Solaris2.7 RAVE computer, through RS 449 at 256 kbps, to EB200 modem, transmission with spread spectrum to DC-8 airborne sciences laboratory at Tinker Air Force Base in Oklahoma, to Ku-band transmit antenna, and transmission at 14,320 MHz to GE2 85°. (4)Transmission from GE2 85° at 11,980 MHz, to Ku-band receive antenna, to DC-8 airborne sciences laboratory, transmission with no spread spectrum to CM701 modem, to PPP serial-to-IP link at 2.180 Mbps, to Solaris2.7 RAVE computer, to rack LAN, to Win2k PC and through RBNB to DC-8 LAN.
Last updated: June 2002
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