1. Team member:
CHEN Weiqi (14250292)
LAI Ming Tong (14223678)
WANG Yifei (14252791)
INTRODUCTION OF GPS
(GROUP 7)
2. Explain basic concept of GPS technology
Show various applications in our daily life
Analyse of survey results
3. 1 •Introduction of GPS
2 •Application
3 •Survey results
4 •Advantage and limitation
4. GPS=Global Positioning Service
Space based satellite navigation system
Provide various useful information like
Weather
Route navigation
Map
5. Low frequency broadcast
Need GPS receiver for access
More than 30 satellites involved
Calculate three-dimensional location of GPS
receiver
6. Space
• 32 GPS
satellites
Control
• Monitor
station
• Input data
collected for
processing
User
• Civil user
• Commercial
user
• Scientific
user
7.
8. Millitary Applications
Navigation: GPS allows soldiers to find
objectives, and to coordinate troop and
supply movement.
Target tracking: Various military weapons
systems use GPS to track potential ground
and air targets before flagging them as
hostile
Missile and projectile guidance: GPS allows
accurate targeting of various military
9. Civilian Applications
Clock synchronization: the accuracy of GPS
time signals (±10 ns).
GPS tours: location determines what content
to display; for instance, information about an
approaching point of interest.
Navigation: navigators value digitally precise
velocity and orientation measurements.
12. What kind of user segment do you use?
Smartphone Portable navigation device PC
83%
17%
0%
13. What is the advantage of GPS
34%
7%
8% 8%
31%
8% 4%
High accuracy
limit interference by other factors
swift transmission of data
low requirement for setting up GPS
freely accessible
No privacy problem
Available in most of region
14. Can you figure out any limitation of GPS?
56%
8%
28%
4%
4%
Privacy leak
provide limited function
expensive for utility
Interference occur easily
others
15. Survey Analysis
According to the survey, most people choose
smartphone as their user segment. They use
GPS to check current location very often,
especially on a trip. We can see the perfect
combination of GPS with smartphones, and
the popularity of the GPS application in our
daily life.
16. 1. High accuracy 34%
2. Freely accessible 31%
3. Low equipment requirement 8%
4. Swift transmission 8%
5. No privacy problem 8%
6. Limit interference by weather 7%
7. High availability 4%