This document discusses a student group project on GPS. It provides an introduction to GPS including how it works with satellites and receivers. It outlines various applications of GPS for military, civilian, and commercial use such as navigation, tracking, and timing. The document also shares the results of a survey on GPS usage which found that most people use GPS on smartphones and value its high accuracy and free accessibility.

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

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.

10.  Link:
http://www.mindmeister.com/457554920/gps

11.  http://goo.gl/forms/JSUFGtkGu1
 Information collected:
Opinion about GPS application
 Number of valid responses:21

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%

18.  http://goo.gl/Uf70F4
 http://goo.gl/Rsrxnl
 http://goo.gl/Qt2i00

19.  Information collection: CHEN Weiqi LAI Ming
Tong
 Survey analysis: LAI Ming Tong WANG Yifei
 Design of the Powerpoint : CHEN Weiqi
WANG Yifei