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GPS Application

  1. 1. Cheung Ki Yan (Wissely) 13214993 Cheung Chi Ki (Kathy) 13212907 Cheung Pak Yeung (Vision) 13205404 24 October 2013
  2. 2. • To enhance understanding about GPS  Background  How it work  Application • To evaluate its potential benefit & harm • To analysis people’s view on GPS (Survey result )
  3. 3. • What are uses of GPS you can think of?
  4. 4. Early 70’s GPS project was developed (US Department of Defense) 1995 Experimental blocks of satellites 70’s - 80’s 24 Satellite constellation in orbit 1994 Full Operational Capability (FOC) GPS on mobile phones 2004
  5. 5. VS
  6. 6. Applicable ✔ ✔ × COST
  7. 7. Transmit information - Time - Location Satellite circle the earth Triangulation Receivers use -Identify triangulation to positions by calculate the user's distance and exact location. angle
  8. 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. 9. Space Segment • Transmit radionavigation signals • Store & retransmit the navigation message sent by the Control Segment Control Segment • Track the GPS satellites • Monitor transmissions • Perform analyses User Segment • Receive GPS signals • Determine pseudoranges • Solve navigation equation
  10. 10. Navigation Tracking
  11. 11. • • • • Location Direction Speed Arriving Time Monitor &Provide Warning about potential dangerous
  12. 12. Comprehensive safety net Send S.O.S. messages Never get lost in remote areas beyond the range of cellular phones
  13. 13. Hiking Outdoor Adventure
  14. 14. Efficient &Effective Provide highly accurate location Provide clear direction & distance of destination High Availability - Be used at anytime Enhance public safety No cost involved Poor reception in some areas Interfere one’s privacy
  15. 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. 16. Number of Respondents: Channel 68 (Mainly teenagers) Number of Questions Type 13 Facebook MC (Mainly) Site: http://goo.gl/qoMeaX
  17. 17. Age of Respondents Below 15 2% 25-35 13% 36-45 3% 16-25 76% Others: 8% Above 45 6%
  18. 18. Experience of using GPS Yes No 23 45
  19. 19. Benefits of using GPS in different aspects Entertainment Travelling Business At work / school 27 18 8 11 1 2 2 1 1 3 1 1 Provide clear direction and High Availability Save time / Fast (Be used at distance of Speed anytime) destination 0 1 0 1 Others:
  20. 20. Willingness to recommend others Yes 98% No 2%
  21. 21. Confidence on Future Trend Yes No Yes No 2 43
  22. 22. Attitudes on GPS influence in differnt sectors Very agree Agree Neutral Disagree Very disagree 30 26 22 11 21 16 16 13 8 19 16 20 17 10 9 00 17 01 3 0 9 7 00 10 4 4 0 4 7 22
  23. 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. 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. 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.

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