The document discusses GPS (Global Positioning System) technology. It begins with an introduction that describes GPS as a satellite-based navigation system that provides location and time information anywhere on Earth. It then discusses the working principles, which involve measuring distances to multiple satellites and using geometry to calculate a precise location. Applications mentioned include navigation systems, tracking vehicles and assets. Advantages listed are fast speeds, all-weather capability and frequent updates. Disadvantages include needing external power and potential for inaccuracies.

1. GPS
Technology
Lam Kung Ting
Lai Mei Sin
Liu Man Wah

2. GPS Technology

3. GPS Technology
Objectives
 Background Information
 Working Principle
 Application
 Advantages and Disadvantages

4. GPS Technology

5. GPS Technology
Introduction
 Global Positioning System
 Space-based satellite navigation system
 Provides location and time information
 In all weather, anywhere on or near the Earth
 Used to refer locations and help if you are lost.
 Secure cars, track your vehicles
 By sending SMS, making a missed call, preset
interval or GPS tracking software for real time online
tracking

6. GPS Technology
Working Principle
Principles: based on the location of the satellite in
space as reference points and satellite measurements
from 4 satellites and geometric principles to calculate
positions on earth.

7. GPS Technology
Working Principle
 Measure the distance between the GPS
receiver
 Measure time - radio waves
 Must know the exact location of the GPS
satellites in space
 Correction of error caused by radio
waves to travel the world

8. GPS Technology
Application
 Banking
 mobile phone operations
 Autotoll GPS service
 GPS watch
 Google Map
 Navigation

9. GPS Technology
Advantages and
Disadvantages
Advantages Disadvantages
 Fast speed  Need good care
 Easy navigation
and handling
system  Need external
power
 Work in all weather
 Inaccuracy
 Nearby Area Search
 Potential failures
 Updated regularly  Privacy concerns

10. GPS Technology
Survey

11. GPS Technology
Survey Result
 23 people answered the survey online
 8 questions asked
 What is your age?
 Have you ever used these application of GPS
Technology?
 What is the purpose of using GPS Technology for you?
 Which channel or media do you prefer when you want
to access GPS Technology?
 How often do you use GPS technology?
 Which advantages do u get from GPS Technology?
 Which disadvantages do u get from GPS Technology?
 In general, how do you feel about GPS technology?

12. GPS Technology
Survey Analysis
Application of GPS Technology
4% 8%
Google Map
Vehicle anti-
theft system
GPS watch
Autotoll GPS
Service
Navigation
88% Others

13. GPS Technology
Survey Analysis
Purpose of Using GPS Technology
25
20
15
10
5
0
Searching
Looking Others (
Number of for the
the For fun Business Anti-theft school
people particular
overview use )
place
Series1 21 5 8 1 0 1

14. GPS Technology
Survey Analysis
Preferred Channel in using GPS
12
10
Number of people
8
6
4
2
0
Phone Computer IPad
Series1 11 11 1

15. GPS Technology
Survey Analysis
The Frequency of using GPS
2-3 Times a Month
17% 18% Less than Once a
Month
Once a Week
17%
Once a Month
31%
17% 2-3 Times a Week

16. GPS Technology
Survey Analysis
Advantages Agree Strongly No Strongly
of GPS agree comment disagree
Disagree
Fast speed 11 2 10 0 0
leads to the 14 6 2 1
right
direction 0
Improve
mapping skills 8 3 10 0 2
Works in all 12 4 6
weather 0 1
Search for 13 6 1
places 0 3
Updated 9 2 8 3 1
regularly

17. GPS Technology
Survey Analysis
Disadvantages Agree Strongly No Strongly
of GPS agree comment disagree
Disagree
Expensive 2 1 7 2
11
Need external 6 1 5 1
power
10
Need good
care and
handling 7 0 9 6 1
Not accurate 11 2 5
(signals) 4 1
Potential 11 0 0
failures 7 5

18. GPS Technology
Survey Analysis
Reflections on GPS
18
16
14
12
10
8
6
4
2
0
Excellent Good Satisfied

19. GPS Technology
design and
Skills Qualtric online
distribute the
survey for
people
make charts
and share
Edit Grid online
with group
mates
The function of
more clear
charts
and good
decoration in
PowerPoint looking

20. GPS Technology
Reference Websites and Tools
 http://en.wikipedia.org  Wikipedia
/wiki/Global_Positionin
g_System  Yahoo!
 http://wiki.answers.co
m/Q/Is_the_GPS_impor  Google
tant
 http://www.gps4educ
ators.com/gps101.htm
 http://www.roseindia.n
et/services/trackingsyst
em/advantaesanddisa
dvantagesofgps.shtml

21. GPS Technology
Job Division
Lam Kung • Information Searching
Ting • Data organization
• Information Searching
Lai Mei Sin • Survey design
Liu Man • Survey analysis
Wah • Data organization

22. GPS Technology