|
gptkbp:instance_of
|
gptkb:satellite
|
|
gptkbp:application
|
geolocation studies
|
|
gptkbp:architecture
|
constellation of satellites
|
|
gptkbp:collaboration
|
yes
|
|
gptkbp:contribution
|
global positioning technology
|
|
gptkbp:coverage
|
yes
minimal
|
|
gptkbp:data_transmission
|
radio signals
|
|
gptkbp:data_usage
|
1.5 kbps
|
|
gptkbp:decommissioned
|
gptkb:2009
|
|
gptkbp:deployment
|
gptkb:1990
|
|
gptkbp:design
|
7.5 years
|
|
gptkbp:development
|
1980s to 1990s
|
|
gptkbp:emergency_services
|
gptkb:disaster_response
|
|
gptkbp:equipment
|
GPS receivers
|
|
gptkbp:frequency
|
strong
L-band
1575.42 MHz
|
|
gptkbp:function
|
gptkb:navigation
|
|
gptkbp:ground_control_stations
|
multiple locations
|
|
gptkbp:home_ground
|
gptkb:GPS_Control_Segment
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
GPS II satellites
|
|
gptkbp:launch_date
|
gptkb:1989
gptkb:1997
approximately every 1-2 years
|
|
gptkbp:launch_platform
|
gptkb:United_Launch_Alliance
|
|
gptkbp:launch_price
|
approximately $30 million
|
|
gptkbp:launch_site
|
gptkb:Cape_Canaveral_Air_Force_Station
|
|
gptkbp:launch_vehicle
|
gptkb:Delta_II
|
|
gptkbp:launched
|
gptkb:United_States
|
|
gptkbp:manufacturer
|
gptkb:Rockwell_International
|
|
gptkbp:market_segment
|
civilian and military users
|
|
gptkbp:mission_duration
|
up to 15 years
|
|
gptkbp:modulation
|
gptkb:CDMA
|
|
gptkbp:navigation_system
|
satellite-based navigation
ephemeris data
within 5-10 meters
|
|
gptkbp:number_in_orbit
|
8 active satellites
|
|
gptkbp:operational_status
|
decommissioned
|
|
gptkbp:operational_use
|
gptkb:military_operations
|
|
gptkbp:orbit_type
|
gptkb:GPS_IIR-1
gptkb:Boeing_601
L1 and L2 frequencies
block II
|
|
gptkbp:orbital_altitude
|
approximately 20,200 kilometers
|
|
gptkbp:orbital_inclination
|
55 degrees
|
|
gptkbp:orbital_period
|
minimal
approximately 12 hours
|
|
gptkbp:part_of
|
gptkb:Earth_observation
|
|
gptkbp:primary_use
|
positioning
timing
|
|
gptkbp:propagation_method
|
through atmosphere
|
|
gptkbp:reliability
|
high
|
|
gptkbp:replaced_by
|
gptkb:GPS_IIR_satellites
|
|
gptkbp:research
|
earth observation
|
|
gptkbp:setting_time
|
atomic clocks
|
|
gptkbp:signal_accuracy
|
10 meters
|
|
gptkbp:space_debris_risk
|
low
|
|
gptkbp:status
|
retired
|
|
gptkbp:successor
|
gptkb:GPS_III_satellites
|
|
gptkbp:supporting_system
|
GPS ground stations
|
|
gptkbp:technology
|
satellite technology
|
|
gptkbp:total_number_launched
|
gptkb:12
|
|
gptkbp:transportation
|
aviation, maritime, land
|
|
gptkbp:upgrades
|
GPS III upgrade
|
|
gptkbp:used_for
|
military and civilian navigation
|
|
gptkbp:user_base
|
millions of users worldwide
|
|
gptkbp:user_countries
|
global navigation
|
|
gptkbp:bfsParent
|
gptkb:GPS_III_satellites
|
|
gptkbp:bfsLayer
|
5
|