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LOS Downlink Systems. Both systems are base upon commercial of the shelf technology. 900 MHz System based upon Freewave Technologies equipment. 2.4 GHz System based upon technology developed by Avarion. 900 MHz Downlink System. - PowerPoint PPT Presentation
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LOS Downlink SystemsLOS Downlink SystemsLOS Downlink SystemsLOS Downlink Systems
Both systems are base upon commercial of the shelf technology. 900 MHz System based upon Freewave
Technologies equipment. 2.4 GHz System based upon technology developed
by Avarion.
900 MHz Downlink System900 MHz Downlink System900 MHz Downlink System900 MHz Downlink System
System utilizes a 902 – 928 MHz Freewave Technologies 115kBs radio modem and a 5 watt amplifier. This system will link with any computer network, including point-to-point ftp, or a laptop depending upon the needs of incident personnel, with a ground station installed.
The distance between aircraft and ground station could be as far as 100 miles line-of-sight.
GROUND STATION
Freewave setup Tok, AlaskaFreewave setup Tok, AlaskaFreewave setup Tok, AlaskaFreewave setup Tok, Alaska
Why 2 Systems? RIPComm\Freewave ComparisonWhy 2 Systems? RIPComm\Freewave ComparisonWhy 2 Systems? RIPComm\Freewave ComparisonWhy 2 Systems? RIPComm\Freewave Comparison
Short range Short range (20 miles)(20 miles)High Bandwidth High Bandwidth (1 Mbps)(1 Mbps)
Long range Long range (100 miles)(100 miles)Small Bandwidth Small Bandwidth (56 kbps)(56 kbps)
Remote Internet Protocol Communication System RIPComRemote Internet Protocol Communication System RIPComRemote Internet Protocol Communication System RIPComRemote Internet Protocol Communication System RIPCom
Developed by NASA Goddard Space Flight Center
As with 900 Mhz system can be used with a computer network or a single lap top.
Ground Station Antennafire/area of concern Data Destination
RIPCom
radio andantennaon plane radio and
supporthardware
NIFC Ground and Field testsNIFC Ground and Field testsNIFC Ground and Field testsNIFC Ground and Field tests
Field test were conducted by NASA-GSFC, NIFC, and RSAC personnel 3/14 – 3/17.
Tests were extremely successful.
3.2 Mbs downloads are possible at 10,000 ft AGL, with a range 9 miles.
We were able to conduct downloads at ranges up to 15 miles. (Approximately 500 kbs)
System is able to tolerate transmission interruptions of up to 45 seconds with out affecting the file transfer.
Field Tests Field Tests Field Tests Field Tests
The next step is to utilize the system during actual incidents. This will happen early in the 2003 fire season. After successful completion of these tests several systems will be deployed for operational use.
RIPCom 2RIPCom 2RIPCom 2RIPCom 2
• Only three connections• Omni-directional antenna• 1 Mb thruput.
Granite Complex, Riggins, IDGranite Complex, Riggins, IDGranite Complex, Riggins, IDGranite Complex, Riggins, ID
September 5, 2005 Flight TestSeptember 5, 2005 Flight TestSeptember 5, 2005 Flight TestSeptember 5, 2005 Flight Test
Only Chance Radio Issues Terrain Issues
Dedicated Flight Testing NOT assigned as an IRIN Ability to follow jet and
test in a number of situations
First goal to demonstrate RIPCom to NIROPS (R4)