Satellites How do they work? NAVSTAR Global Positioning System Satellite.
-
Upload
imogen-andrews -
Category
Documents
-
view
226 -
download
1
Transcript of Satellites How do they work? NAVSTAR Global Positioning System Satellite.
Components
ANY object that revolves around a planet (e.g. the moon)ArtificialOrbit, Apogee, and PerigeeCustom built“Space junk”
Sputnik 1 (October 4, 1957)
Soviet Union A Thermometer A Battery A Radio
transmitter Pressurized
Nitrogen gas
Types
Weather satellites (TIROS, COSMOS)Communications satellites (Telstar, Intelsat) transponder
Broadcast satellitesScientific satellites (Hubble telescope)Navigational satellites (GPS Navstar)Rescue satellitesEarth observation satellites (LANDST)Military satellites (???)
Geostationary Orbits
Positioned over the same area
Normally, 22,223 MilesWeather
Communication
Communications Satellite
Asynchronous Orbits
Multiple passes80-1,200 miles Teledesic, LEOs
Observation (300-600 miles)3,000-6,000 miles Scientific
6,000-12,000 miles Navigation (GPS)
Northpoint Impact
Competition with cable and DBSFiber optics to allOpportunities for Geostationary satellitesSpectrum planning