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gptkbp:instance_of
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gptkb:satellite
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gptkbp:constellation
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part of GPS constellation
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gptkbp:control_segment
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gptkb:United_States_Air_Force
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gptkbp:data_usage
|
50 bps
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|
gptkbp:debut
|
February 14, 1989
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gptkbp:decommissioned
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gptkb:1997
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gptkbp:frequency
|
L-band
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gptkbp:ground_station
|
operated by USAF
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gptkbp:home_ground
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gptkb:Master_Control_Station
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|
https://www.w3.org/2000/01/rdf-schema#label
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GPS Block II satellites
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gptkbp:initial_deployment
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gptkb:1989
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gptkbp:last_launch
|
May 1990
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gptkbp:launch_count
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gptkb:12
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gptkbp:launch_date
|
gptkb:1989
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|
gptkbp:launch_site
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gptkb:Cape_Canaveral_Air_Force_Station
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|
gptkbp:launch_vehicle
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gptkb:Delta_II
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|
gptkbp:manufacturer
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gptkb:Rockwell_International
|
|
gptkbp:mass
|
1,000 kg
|
|
gptkbp:modulation
|
gptkb:CDMA
|
|
gptkbp:navigation_accuracy
|
10 meters
|
|
gptkbp:navigation_message
|
broadcasted to users
|
|
gptkbp:navigation_system
|
satellite-based
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|
gptkbp:number_built
|
gptkb:12
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|
gptkbp:operational_lifetime
|
7 years
|
|
gptkbp:orbit_type
|
GPS technology
Block II
ground-based control
geocentric orbit
medium Earth orbit satellite
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|
gptkbp:orbital_altitude
|
20,200 km
|
|
gptkbp:orbital_period
|
12 hours
|
|
gptkbp:positioning_accuracy
|
< 10 meters
|
|
gptkbp:power_source
|
solar panels
|
|
gptkbp:purpose
|
gptkb:navigation
|
|
gptkbp:satellite_communication
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gptkb:radio_station
|
|
gptkbp:satellite_navigation
|
provides location data
|
|
gptkbp:satellite_numbering
|
PRN numbers
|
|
gptkbp:satellite_replacement
|
Block IIR and Block IIF
|
|
gptkbp:satellite_system
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gptkb:Earth_observation
|
|
gptkbp:signal_frequency
|
L1 and L2
|
|
gptkbp:signal_reception
|
requires GPS receiver
|
|
gptkbp:signal_structure
|
pseudorandom noise code
|
|
gptkbp:signal_transmission
|
continuous
|
|
gptkbp:status
|
retired
|
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gptkbp:successor
|
gptkb:GPS_Block_III_satellites
|
|
gptkbp:system_implementation
|
military and civilian use
|
|
gptkbp:system_type
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gptkb:Earth_observation
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|
gptkbp:user_segment
|
civilian and military
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gptkbp:bfsParent
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gptkb:third_generation_GPS_satellite
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gptkbp:bfsLayer
|
7
|