Satalite Principles

Question 0

Why have satellites

Answer 0

Meteorological
Photo/Surveilence
Broadcast
Nav 
Comms
Which orbit will depend on the job of the satellite

Question 1

First uk military satellite

Answer 1

Sky net 1969

Question 2

Sync

Ascnc orbit

Answer 2

Synchronous orbit locked in tandem with the earths rotation

Question 3

GEO orbit

Answer 3

22223 miles

Question 4

Azmith card dotted and solid line

Answer 4

Dotted elevation

Straight bearing

Question 5

LEO
MEO
HEO
GEO
PEO

Answer 5

LEO-80-1200 miles
MEO-1200-1800 miles
HEO-1800-22223 miles
These are asynchronous

GEO-22223-synchronous
PEO-LEO goes from S-N - ascnchronous

Question 6

GPS TX freq

Answer 6

1575.42mhz

Question 7

Spot beam

Broad beam

Answer 7

Spot beam is a concentrated beam focused on a small area

Broad bean covers a large area

Question 8

Military strategical satellite

Answer 8

7.25ghz-8.4ghz

Question 9

Military tactical satellite

Answer 9

240-320mhz

Question 10

Azimuth card

Answer 10

Bearing and elevation of antenna to satellite

Question 11

Advantages/disadvantages of GEO

Answer 11

Ad- provides constant coverage
Requires fewer satellites
Less susceptible to drag

Dis-propogation loss is high
Cannot provide polar coverage