Space Domain Flashcards
Discuss the impacts of gravity and angular momentum on the motion of objects in space
G and momentum drive motion in space
Discuss Semimajor Axis
-orbit size
“average” altitude
Impact: type of mission and speed of satellite
Discuss eccentricity
- orbit shape
how close to circular is it
Impact: type of mission and field of view
Discuss inclination
- orbit tilt
angle from the equator
Impact: where the satellite has access over the earth
Discuss argument of perigee
- perigee location
where is the satellite closest to earth
Impact: where the satellite is optimized for mission
Discuss true anomaly
- satellite location
where the satellite currently is in orbit
Impact: you have to know where the satellite is at some point t
Discuss right ascension of the ascending node
- orbital twist
- nerd talk about the vernal equinox
Impact: how we know where is will cross the equator
Space block: Air Domain
Surface to 90km
Space block and mission: low earth orbit
90-850 km
Weather, SAR, imagery, some ELINT, space based surveillance
Space block and mission: medium earth orbit
20000km
GPS
Space block and mission: geosynchronous orbit
35000 km
OPIR, comm, ELINT, space based surveillance
Space block and mission: high earth orbit
400km-40000km
OPIR, imagery
Describe limitations of space mission support
Most satellites have *limited dwell time
- motion of objects = constant change in mission support
- “wait for revisit”
Sensors must be tasked to cover areas of interest
Limited number of satellites require prioritized tasking
