|
gptkbp:instance_of
|
gptkb:satellite
|
|
gptkbp:antenna_type
|
phased array antenna
|
|
gptkbp:communication_type
|
gptkb:satellite
|
|
gptkbp:data_service
|
SMS and email
|
|
gptkbp:data_usage
|
2.4 kbps
|
|
gptkbp:debut
|
1997-05-05
|
|
gptkbp:decommissioned
|
gptkb:2019
|
|
gptkbp:design
|
5 years
|
|
gptkbp:frequency
|
L band
|
|
gptkbp:global_coverage
|
yes
|
|
gptkbp:home_ground
|
Iridium ground stations
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Iridium original satellites
|
|
gptkbp:initial_investment
|
$5 billion
|
|
gptkbp:last_launch
|
2002-10-29
|
|
gptkbp:launch_date
|
gptkb:1997
|
|
gptkbp:launch_site
|
gptkb:Cape_Canaveral
|
|
gptkbp:launch_vehicle
|
gptkb:Delta_II
|
|
gptkbp:manufacturer
|
gptkb:Motorola
|
|
gptkbp:network
|
mesh network
|
|
gptkbp:orbit_type
|
gptkb:66
digital signal processing
polar orbit
Low Earth Orbit (LEO)
|
|
gptkbp:orbital_altitude
|
780 km
|
|
gptkbp:orbital_period
|
100 minutes
|
|
gptkbp:power_source
|
solar panels
|
|
gptkbp:primary_use
|
voice and data communication
|
|
gptkbp:primary_user
|
gptkb:U._S._Department_of_Defense
|
|
gptkbp:propulsion
|
hydrazine thrusters
|
|
gptkbp:relaunch_date
|
2019-01-11
|
|
gptkbp:replacement_system
|
gptkb:Iridium_NEXT
|
|
gptkbp:satellite_communication
|
two-way communication
|
|
gptkbp:satellite_communication_applications
|
maritime, aviation, military
|
|
gptkbp:satellite_communication_challenges
|
signal latency
|
|
gptkbp:satellite_communication_cost
|
high cost per minute
|
|
gptkbp:satellite_communication_infrastructure
|
ground stations and user terminals
|
|
gptkbp:satellite_communication_limitations
|
limited bandwidth
|
|
gptkbp:satellite_communication_network
|
interconnected satellites
|
|
gptkbp:satellite_communication_protocol
|
gptkb:TCP/_IP
|
|
gptkbp:satellite_communication_reliability
|
high reliability
|
|
gptkbp:satellite_communication_security
|
secure communication channels
|
|
gptkbp:satellite_communication_services
|
voice, data, and tracking services
|
|
gptkbp:satellite_communication_technology
|
advanced modulation techniques
|
|
gptkbp:satellite_compatibility
|
compatible with various devices
|
|
gptkbp:satellite_coverage_area
|
entire Earth
|
|
gptkbp:satellite_data_encryption
|
AES encryption
|
|
gptkbp:satellite_deployment
|
in groups of 10
|
|
gptkbp:satellite_impact
|
remote area communication
|
|
gptkbp:satellite_legacy
|
first global satellite phone system
|
|
gptkbp:satellite_legacy_system
|
Iridium 9600 modem
|
|
gptkbp:satellite_lifetime
|
10 years
|
|
gptkbp:satellite_maintenance
|
on-orbit servicing
|
|
gptkbp:satellite_network
|
global satellite network
|
|
gptkbp:satellite_numbering
|
IRIDIUM-1 to IRIDIUM-66
|
|
gptkbp:satellite_redundancy
|
yes
|
|
gptkbp:satellite_replacement
|
gptkb:Iridium_NEXT_satellites
|
|
gptkbp:satellite_shape
|
hexagonal
|
|
gptkbp:satellite_technology_evolution
|
led to Iridium NEXT
|
|
gptkbp:satellite_technology_innovation
|
first to use LEO for global coverage
|
|
gptkbp:satellite_user_base
|
government and commercial users
|
|
gptkbp:satellite_weight
|
around 600 kg
|
|
gptkbp:service_provider
|
gptkb:Iridium_Communications
|
|
gptkbp:service_termination
|
gptkb:2000
|
|
gptkbp:bfsParent
|
gptkb:Iridium_NEXT
|
|
gptkbp:bfsLayer
|
6
|