- 1. Cheung Ki Yan (Wissely) 13214993 Cheung Chi Ki (Kathy)
13212907 Cheung Pak Yeung (Vision) 13205404 24 October 2013
2. To enhance understanding about GPS Background How it work
Application To evaluate its potential benefit & harm To
analysis peoples view on GPS (Survey result ) 3. What are uses of
GPS you can think of? 4. Early 70s GPS project was developed (US
Department of Defense)1995 Experimental blocks of satellites70s -
80s24 Satellite constellationin orbit1994Full Operational
Capability (FOC)GPS on mobile phones2004 5. VS 6. ApplicableCOST 7.
Transmit information - Time - LocationSatellite circle the
earthTriangulation Receivers use -Identify triangulation to
positions by calculate the user's distance and exact location.
angle 8. GPS: Very small clock error, results in a large position
error Receivers use four or more satellites to solve for x, y, z,
and t 9. Space Segment Transmit radionavigation signals Store &
retransmit the navigation message sent by the Control
SegmentControl Segment Track the GPS satellites Monitor
transmissions Perform analysesUser Segment Receive GPS signals
Determine pseudoranges Solve navigation equation 10.
NavigationTracking 11. Location Direction Speed Arriving
TimeMonitor &Provide Warning about potential dangerous 12.
Comprehensive safety netSend S.O.S. messagesNever get lost in
remote areas beyond the range of cellular phones 13. HikingOutdoor
Adventure 14. Efficient &Effective Provide highly accurate
location Provide clear direction & distance of destination High
Availability - Be used at anytime Enhance public safety No cost
involvedPoor reception in some areas Interfere ones privacy 15.
Objectives: - More resources should be put in GPS development &
promotion Bring much convenience & advantages to users in
different sectors Can be used in different sectors 16. Number of
Respondents: Channel68 (Mainly teenagers)Number of Questions
Type13FacebookMC (Mainly)Site: http://goo.gl/qoMeaX 17. Age of
RespondentsBelow 15 2%25-35 13% 36-45 3%16-25 76%Others: 8%Above 45
6% 18. Experience of using GPS YesNo2345 19. Benefits of using GPS
in different aspects EntertainmentTravellingBusinessAt work /
school2718 811 1 221 131 1Provide clear direction and High
Availability Save time / Fast (Be used at distance of Speed
anytime) destination0 1 0 1 Others: 20. Willingness to recommend
others Yes98%No2% 21. Confidence on Future Trend YesNoYesNo243 22.
Attitudes on GPS influence in differnt sectors Very
agreeAgreeNeutralDisagreeVery disagree 3026 22 112116 1613 8191620
17109 0017013 097 001044 047 22 23. Consistent with objectives:
More resources should be put in GPS development Popular People have
confident toward its future development Can be applied in different
sectors More resources should be put in GPS promotion Mainly used
as transportation purpose 24. GPS has been evolving through time
Help in the navigation, military, transportation and emergency
fields Originally designed for military purposes The civil
applications have grown faster GPS has replaced the conventional
methods Cost effective process, time saving, accuracy and rapidness
25. Kaplan, E. D., & Hegarty, C. (2006). Understanding GPS:
Principles and applications. Boston: Artech House. Xu, G., 1953,
SpringerLink (Online service), & Springer-Verlag. (2007). GPS:
Theory, algorithms, and applications. Berlin, Heidelberg:
Springer-Verlag Berlin Heidelberg. El-Rabbany, A. (2002).
Introduction to GPS: The global positioning system. Boston, MA:
Artech House. Leick, A., & Lambert, S. (1990). GPS satellite
surveying. New York: Wiley. Gps application raises privacy flag.
(2001, ). Global Positioning & Navigation News, pp. 1. Vehicle
navigation dominates the GPS application market. (2012, ). M2
Presswire James, R. (2009). A brief history of: GPS. New York: Time
Incorporated. Charles Plueddeman. (1999). GPS mapping. New York:
Bonnier Corporation.
