2. WHAT IS GPS?
. GPS is a sattelite that answers the age old question
WHERE AM I?
. It is the only system today able to show you your
exact position on the Earth anytime,in any
weather,anywhere.
. The 3 parts of GPS are:
1.Satellites
2. Receivers
3. Software
3. HISTORY OF GPS
• GPS was developed by United States Department of
Defence in 1973 and is named NAVSTAR
GPS(NAVigation Sattelite Timing And Ranging Global
Positioning System!) and makes it freely accessible to
anyone with a GPS receiver .
• GPS was originally a military project, though now it is
a dual-use technology and has significant military
and civilian applications.
• Use in Kargil (1999)
5. SATELLITES
• The satellites orbit earth and
send radio signals to GPS
receivers, which use the
signals to figure out time and
position.
• There are roughly 30
satellites in orbit.
• GPS satellites complete an
orbit in approximately 12
hours.
6. GROUND STATIONS
• Ground stations are the control segments of GPS.
• Five unmanned ground stations around the Earth
monitor the satellites.
• Information from the stations is sent to a master contol
station where the data is used to keep the satellites in
orbit.
7. RECEIVERS
• Anyone who has a GPS receiver can use the
satellite signals to determine their location.
• Receivers are inexpensive and are often built
into mobile phones.
8. CIVILIAN USES
• Astronomy: It is used in amateur astronomy by
using small telescopes to professional telescopes.
• Automated vehicles: Applying location and routes
for cars and trucks to function without a human
driver.
9. • Smartphones : They are an easy and popular way to allow
people to use GPS. Example : Check in by Facebook & Google
Map
• Disaster relief/emergency services: depend upon GPS for
location and timing capabilities.
• Tracking Wildlife: A GPS receiver is attatched to an animal
allowing researchers to observe animal movement and track
migration patterns.
