115 Navy Space Flashcards
biggest impact of space environment
The sun
Solar cycle
11 year cycle, 4 years rise, 7 decline
by-products of sun
ER (electromagnetic radiation)
ECP (electrically charged particles)
types of orbits
Low earth
medium earth
highly elliptical
geosynchronous
polar
GBS
Global Broadcast Service
WW one way transmission for a variety of data/imagery and other info
Apogee
satellites farthest point of orbit from center of earth
Perigee
satellites closest point of orbit to center of earth
Disadvantage space based ISR
predictable schedule
systems may be impacted by atmospheric disturbances
SSA
space situational awareness
Geo-location
identification of the real world geographic location of an object
DSCS
Defense Satellite Communication System
provides world wide jam resistant voice transfer between NCA and CJCS
What does SSA support
-space ops and safety
-implement international treaties and agreements
-protects space capabilities
-protects military ops + national interests
Advantage of space ISR
-provides focused coverage
-enhance planning
-enhance accuracy
shorten reaction times
GPS
Global Positioning System
satellite based radio navigation system operated by the DoD
Astrometry
scientific measure of the positions and motions of celestial bodies
Network synchronization
NTP (network time protocol) designed to synchronize clocks and computers over a network
Polar Orbit
used by imagery satellites
passes over entire surface of earth
LEO
Low earth orbit
150-800 miles above surface
-90 minute orbit
medium Earth orbit
Above LEO
below geostationary
Geosynchronous orbit
19,300 miles
24hr orbit
highly elliptical orbit
used to obtain comms in the northern or southern hemisphere
2 Maine space launch facilities
Vandenburg AF base
NASA Kennedy Space Center, Florida
Earth Orientation Parameters
Describes the irregularities of the Earths Rotation
Navy Space mission areas
Enhancement
Support
Control
Force Application
