Space

Question 1

LOW EARTH ORBIT (LEO)

Answer 1

Altitude: 1500km

Period: 90-120 minutes

Mission: Weather, Astronomy, Recon

Question 2

MEDIUM EARTH ORBIT (MEO)

Answer 2

• 20,000 Km
• Period: 12 hours
• Mission – GPS

Question 3

GEOSYNCHRONOUS ORBIT (GEO)

Answer 3

• Altitude: 36,000 Km
• Period: 24 hours
• fixed position
• not visible from polar regions
• figure 8 orbit over position
• Mission: satellite comms, missile warning

Question 4

HIGHLY ELIPTICAL ORBIT (HEO)

(aka Molniya)

Answer 4

• Altitude: 400km perigee x 40,000km apogee
• Period = 12 hours
• the shape of the orbit is highly elliptical.
• Mission: polar comms and recon

Question 5

PERIGEE

Answer 5

The point of orbit closest to Earth

Question 6

APOGEE

Answer 6

The point of orbit farthest from the earth

Question 7

ULTRA-HIGH FREQUENCY FOLLOW-ON (UFO)

Answer 7

• UHF SATCOM
• GBS
• low data rate
• Replaced by MUOS

Question 8

MILSTAR

Answer 8

• developed by the Air Force
• LDR and MDR
• secure, jam-resistant
• EHF

Question 9

MUOS (MOBILE USER OBJECTIVE SYSTEM)

Answer 9

• replaces the UFO satellite constellation
• UHF SATCOM
• 10 times the communications capacity over UFO

Question 10

AEHF (ADVANCED EXTREMELY HIGH FREQUENCY)

Answer 10

• replaces MILSTAR
• LDR, MDR, XDR
• EHF
• A single AEHF satellite provides greater total capacity than the entire Milstar constellation

Question 11

POLAR EHF PACKAGE (PEP)

Answer 11

• modified UFO payload
• two orbits per day
• 7 hours availability per orbit
• arctic communications with submarines

Question 12

WGS (WIDEBAND GLOBAL SATCOM)

Answer 12

• SHF X and Ka frequency bands
• one WGS satellite provides more SATCOM capacity than the entire legacy Defense Satellite Communications System (DSCS) constellation

Question 13

DSCS (DEFENSE SATELLITE COMMUNICATIONS SYSTEM

Answer 13

• succeeded by the WGS series of satellites
• X band
• 5 in use (3 SLEP)

Question 14

CBSP (COMMERCIAL BROADBAND SATELLITE PROGRAM)

Answer 14

• SHF
• COMMERCIAL LEASE
• C, KU, X BAND

Question 15

SAR (SATELLITE ACCESS REQUEST)

Answer 15

• UNIT ► ISIC ► STRIKE GROUP ► FLEET FORCES ► COCOM ► RSSC (REGIONAL SATELLITE SUPPORT CENTER

Question 16

RSSC (REGIONAL SATELLITE SUPPORT CENTER)

Answer 16

• Stuttgart, Germany (EUCOM, AFRICOM)
• Wheeler Army Air Field, Hawaii (PACOM)
• Peterson AFB, CO (NORTHCOM)
• MacDill AFB, FL (CENTCOM, SOCOM, SOUTHCOM)

Question 17

SAA (SATELLITE ACCESS AGREEMENT)

Answer 17

• sent by RSSC (Regional Satellite Support Center) to unit
• GAR (Gateway Access Request) included

Question 18

STANDARDIZED TACTICAL ENTRY POINT (STEP)

Answer 18

• DSCS (X Band, Ka, Ku, EHF)
• 5 Sites
  
  • Ft Belvoir, Ft Bragg, Bahrain, Ft Detrick, Ft Meade
• extended to teleport

Question 19

TELEPORT SITE SYSTEM

Answer 19

• junction for all space and terrestrial long haul communications
• 7 Sites
  
  • NW ANNEX: UHF, X, C, Ka, Ku, EHF, GBS
  • Lago (Italy): UHF, X, C, Ka, Ku, EHF, GBS
  • Wahiwa: UHF, X, C, Ka, Ku, EHF, GBS
  • Camp Roberts: UHF, X, C, Ka, Ku, EHF, GBS
  • Ramstein (Germany): UHF, X, C, Ka, Ku, EHF
  • Ft. Buckner (Japan): UHF, X, C, Ka, Ku, EHF
  • Landstuhl (Germany) X, C, Ka, Ku

Question 20

SATELLITE MISSION AREAS

Answer 20

• Navigation
• Communications
• Weather
• intelligence, surveillance and reconnaissance (ISR)