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gptkbp:instance_of
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gptkb:satellite
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gptkbp:area
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entire Earth
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|
gptkbp:broadcasts
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two-way communication
limited bandwidth
maritime, aviation, military
high cost per minute
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|
gptkbp:challenges
|
signal latency
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gptkbp:communication
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gptkb:satellite
|
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gptkbp:covered_by
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gptkb:battle
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|
gptkbp:data_privacy
|
AES encryption
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gptkbp:data_usage
|
2.4 kbps
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|
gptkbp:date
|
2019-01-11
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gptkbp:debut_year
|
1997-05-05
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gptkbp:decommissioned
|
gptkb:2019
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gptkbp:deployment
|
in groups of 10
|
|
gptkbp:design
|
5 years
|
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gptkbp:elevation
|
780 km
|
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gptkbp:frequency
|
L band
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gptkbp:geographical_feature
|
hexagonal
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gptkbp:gps
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gptkb:battle
|
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gptkbp:home_ground
|
Iridium ground stations
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|
https://www.w3.org/2000/01/rdf-schema#label
|
Iridium original satellites
|
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gptkbp:icao_code
|
gptkb:TCP/_IP
|
|
gptkbp:impact
|
remote area communication
|
|
gptkbp:infrastructure
|
ground stations and user terminals
|
|
gptkbp:innovation
|
first to use LEO for global coverage
|
|
gptkbp:investment
|
$5 billion
|
|
gptkbp:is_supported_by
|
compatible with various devices
|
|
gptkbp:launch_date
|
gptkb:1997
|
|
gptkbp:launch_site
|
gptkb:cape
|
|
gptkbp:launch_vehicle
|
gptkb:Delta_II
|
|
gptkbp:launched
|
2002-10-29
|
|
gptkbp:legacy
|
Iridium 9600 modem
first global satellite phone system
|
|
gptkbp:maintenance
|
on-orbit servicing
|
|
gptkbp:manufacturer
|
gptkb:Motorola
|
|
gptkbp:mission
|
gptkb:66
digital signal processing
polar orbit
Low Earth Orbit (LEO)
|
|
gptkbp:network
|
mesh network
global satellite network
interconnected satellites
|
|
gptkbp:orbital_period
|
10 years
100 minutes
IRIDIUM-1 to IRIDIUM-66
|
|
gptkbp:power_output
|
solar panels
|
|
gptkbp:primary_source
|
voice and data communication
|
|
gptkbp:primary_user
|
gptkb:U._S._Department_of_Defense
|
|
gptkbp:propulsion
|
hydrazine thrusters
|
|
gptkbp:reliability
|
high reliability
|
|
gptkbp:replaced_by
|
gptkb:Iridium_NEXT
gptkb:Iridium_NEXT_satellites
|
|
gptkbp:security_features
|
secure communication channels
|
|
gptkbp:services
|
gptkb:Iridium_Communications
gptkb:2000
SMS and email
voice, data, and tracking services
|
|
gptkbp:socket_type
|
phased array antenna
|
|
gptkbp:technology
|
advanced modulation techniques
led to Iridium NEXT
|
|
gptkbp:user_base
|
government and commercial users
|
|
gptkbp:weight
|
around 600 kg
|
|
gptkbp:bfsParent
|
gptkb:Iridium_NEXT
|
|
gptkbp:bfsLayer
|
5
|