1. Preliminary Design Report GPS Location System

2. Introduction • GPS COMM Group • Team Members • Adam Preeo • Adrian Migacz • Andy Merritt • Taylor Hughes

3. Adam Preeo • Power lab • GPS user • Project work – Transceiver and LCD

4. Adrian Migacz • Only ECE member of the group • Computer Architecture, Programming Languages etc. • Enjoys playing sports

5. Andy Merritt • National Center for Atmospheric Research • Communication Theory • Working on GPS and Transceiver hardware

6. Taylor Hughes • Work at Avaya in Westminster • Software Integration and Testing • Database/Web Administrator • Testing Automation • Familiar with Matlab Software • Will be used for some calculations and mapping

7. Handheld GPS unit with a display that communicates with a base station. Communication and Location technology consolidated into one handheld unit Group outdoor activities Outdoor Recreation Field Research teams Family vacations Military Operations Function and Uses

8. GPS System Diagram • GPS Unit • GPS Receiver • Data Translators • Transmitter/Receiver • LCD Screen • Base Station • Laptop Computer • Data Processor • Transmitter/Receiver

9. Field Unit Diagram LCD Screen GPS Receiver Data Translator Data Translator Transmitter /Receiver Wireless Link To Base Station

10. Base Station Diagram From Field Unit To Field Unit Receiver Transmitter Data Processor Serial Connection Laptop Station GPS Receiver

11. Project Goals • Baseline Goals: • Field Unit to Base Station communication • Show coordinates, distance, and bearing to the Base Station on the Field unit • Extensions: • Use Multiple Field units • Display multiple locations on Field unit • Use graphic display instead of text

12. Division of Labor • Laptop Station – Taylor Hughes • Data Processor – Adrian Migacz • Transmitters/Receivers – Andy Merritt and Adam Preeo • Data Translators – Adam Preeo and Adrian Migacz • GPS Receivers – Andy Merritt • LCD Screens – Taylor Hughes and Adam Preeo

13. Base Station Diagram From Field Unit To Field Unit Receiver Transmitter Data Processor Serial Connection Laptop Station GPS Receiver

14. Laptop Station • Components: • Laptop Computer • RS232 Serial Connection to Data Processor • Delorme Topo Software • GPS Receiver (included with Topo Software) • Matlab Software

15. Laptop Station Components • Laptop Computer • Delorme Topo Software • Includes Interface with GPS receiver • Used to retrieve GPS coordinates of laptop computer for comparison with those of the Field unit.

16. Laptop Station Components • Laptop Computer • Matlab Software • Used for advanced data calculations and triangulation of coordinates. • Used for RS232 communications to data processor • Used to map relative positions of GPS coordinates

17. Laptop Station Components • RS232 Interface • Connects laptop computer to Data Processor • Used to receive coordinates of the field GPS unit from data processor. • Used to send calculated data for eventual display on LCD screen on field unit.

18. Base Station Diagram From Field Unit To Field Unit Receiver Transmitter Data Processor Serial Connection Laptop Station GPS Receiver

19. Data Processor • Motorola 68000 Processor & Compiler -used to calculate the distance between two GPS coordinates -calculate the bearing from North of where the LCD unit is located

20. Field Unit Diagram LCD Screen GPS Receiver Data Translator Data Translator Transmitter /Receiver Wireless Link To Base Station

21. Data Translator • Microcontroller for LCD provide “smarts” -gather data for the LCD so it can display the coordinates -Motorola HC12 and developing board with memory

22. Base Station Diagram From Field Unit To Field Unit Receiver Transmitter Data Processor Serial Connection Laptop Station GPS Receiver

23. Field Unit Diagram LCD Screen GPS Receiver Data Translator Data Translator Transmitter /Receiver Wireless Link To Base Station

24. Transceiver • North American Radio Solutions • Cost: $40 • Serial Interface • Simple • Short range • 500m

25. Field Unit Diagram LCD Screen GPS Receiver Data Translator Data Translator Transmitter /Receiver Wireless Link To Base Station

26. GPS Receiver • Cost: $119 • Serial Interface • Excellent for outdoor environment • Urban Canyons • Dense Foliage

27. Field Unit Diagram LCD Screen GPS Receiver Data Translator Data Translator Transmitter /Receiver Wireless Link To Base Station

28. LCD Screen • Crystal fonts – 4x20 Serial Alphanumeric LCD • Character only display • Serial interface • Programmable by any language • Scrolling text • The Price is Right

29. Risks & Contingency Plans • 1. LCD Display (Character vs. Graphics Display) - ideally use Graphics, else use Character • 2. Not being able to configure LCD at all -use a laptop for the portable unit • 3. RF issues - FCC, bandwidth-gain, range

30. Risks & Contingency Cont. • 4. Power Issues - portable power supplies for units, battery-powered • 5. Problems w/ Interfacing all components - intermediary components to fix problems

31. Schedule

32. Preliminary User’s Manual • Uses • Startup directions • How to read the display • High level description of how the product functions • Trouble Shooting section

33. Summary • Function • Uses • Components • Risks • What the end user can expect

34. Questions