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• Navigation system: Introduction• Navigation system Example• History•GPS•NAVIGATION MODES•APPLICATION OF NAVIGATION
•Automotive: This refers to automation inAutomobiles …•Navigation: Positioning & Locating...•System: Combination of all i/...
MaptechNavigator12” LCD displayTouch screenGPS navigationOperational data
•Introduced in 1977 with electronic compass• In 1995 Mitsubishi Electric introduced an original  route-guidance system in ...
•The Global Positioning System (GPS) is a worldwide radio-navigation system.•provide 24-hour three-dimensional position, v...
Space Segment                                          User Segment           Control Segment                             ...
SPACE SEGMENT•   24 GPS space    vehicles(SVs).•   Satellites orbit the    earth in 12 hrs.•   6 orbital planes    incline...
CONTROL SEGMENT
•It consists of receivers that decode the signals fromthe satellites.•The receiver performs following tasks:   oSelecting ...
•There are two services SPS and PPSSPS - The Standard Positioning ServicePPS - The Precise Position Service
HOW GPS WORKS?GPS works in 5 Step, step’s are as follows... TRIANGULATION MEASURING DISTANCE GETTING PERFECT TIMING SA...
GPS TRANSMITTED SIGNAL•  Two signals are transmitted on carriers:   L1 = 1575.42 MHz   L2 = 1227.60 MHz• Modulation used i...
SPREAD SPECTRUM• Spread Spectrum is used because  - resistance to jamming  - masks the transmissions  - resist multipath e...
•   Position and coordinates.•   The distance and direction between any two    waypoints,    or a position and a waypoint....
•   By knowing how far one is from three satellites    one can ideally find their 3D coordinates
• 3D Navigation  • At least 4 satellites  • Computes latitude, longitude,altitude and time• 2D Navigation  • Less than 4 s...
Active GOTO                                              Waypoint    N    (0000)               Desired Track              ...
What’s a Car NavigationGPS satellite      System                 GPS                Receiver                              ...
•   A waypoint is starting or end point•   Either a saved position fix or user entered•   It can be created for any remote...
Active GOTO   N                                            Waypoint               Bearing =               780 COG =Bearing...
= WaypointsStart
APPLICATION OF NAVIGATION•Car Navigation•Dynamic Vehicle Routing•Tracking Rental Cars•Monitoring High Risk Auto Loans•Airl...
Automotive navigation system
Automotive navigation system
Automotive navigation system
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Automotive navigation system

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Automotive navigation system

  1. 1. • Navigation system: Introduction• Navigation system Example• History•GPS•NAVIGATION MODES•APPLICATION OF NAVIGATION
  2. 2. •Automotive: This refers to automation inAutomobiles …•Navigation: Positioning & Locating...•System: Combination of all i/p-o/p devices
  3. 3. MaptechNavigator12” LCD displayTouch screenGPS navigationOperational data
  4. 4. •Introduced in 1977 with electronic compass• In 1995 Mitsubishi Electric introduced an original route-guidance system in 1995.•Uses a 32-bit RISC processor, achieving the fastest route-calculating performanceNow Automotive navigation system uses theGPS(Global Positioning System) system
  5. 5. •The Global Positioning System (GPS) is a worldwide radio-navigation system.•provide 24-hour three-dimensional position, velocity, and time information•The GPS is comprised of three segmentsSpace Segment: the constellation of satellitesControl Segment: control the satellites User Segment: users with receivers
  6. 6. Space Segment User Segment Control Segment Ground AntennasMaster Station Monitor Stations
  7. 7. SPACE SEGMENT• 24 GPS space vehicles(SVs).• Satellites orbit the earth in 12 hrs.• 6 orbital planes inclined at 55 degrees with the equator.• This constellation provides 5 to 8 SVs from any point on the earth.
  8. 8. CONTROL SEGMENT
  9. 9. •It consists of receivers that decode the signals fromthe satellites.•The receiver performs following tasks: oSelecting one or more satellites oAcquiring GPS signals oMeasuring and tracking oRecovering navigation data
  10. 10. •There are two services SPS and PPSSPS - The Standard Positioning ServicePPS - The Precise Position Service
  11. 11. HOW GPS WORKS?GPS works in 5 Step, step’s are as follows... TRIANGULATION MEASURING DISTANCE GETTING PERFECT TIMING SATELLITES POSITION DETERMINING A POSITION
  12. 12. GPS TRANSMITTED SIGNAL• Two signals are transmitted on carriers: L1 = 1575.42 MHz L2 = 1227.60 MHz• Modulation used is Direct Sequence Spread Spectrum (code division multiple access - CDMA)
  13. 13. SPREAD SPECTRUM• Spread Spectrum is used because - resistance to jamming - masks the transmissions - resist multipath effects - multiple access• All 24 GPS satellites transmit on the same two frequencies BUT use a different ID sequence
  14. 14. • Position and coordinates.• The distance and direction between any two waypoints, or a position and a waypoint.• Travel progress reports.• Accurate time measurement.
  15. 15. • By knowing how far one is from three satellites one can ideally find their 3D coordinates
  16. 16. • 3D Navigation • At least 4 satellites • Computes latitude, longitude,altitude and time• 2D Navigation • Less than 4 satellites or fixed altitude is given• DGPS Navigation • Differential corrections are available through the auxiliary serial port
  17. 17. Active GOTO Waypoint N (0000) Desired Track (DTK) (xº) (CMG) (xº) N (00) Tracking (TRK) (xº)Active Course Made Good (CMG) PresentFrom LocationWaypoint
  18. 18. What’s a Car NavigationGPS satellite System GPS Receiver System BUS SDRAM Flash ROM TFT display CPU Graphic Renderer SDRAM Touch panel User Interface Decorder Audio LSI Remote controller Speaker Main Unit CD or DVD Drive Data Disc KIWI-W consortium
  19. 19. • A waypoint is starting or end point• Either a saved position fix or user entered• It can be created for any remote point on earth.• Unchanged until edit by user
  20. 20. Active GOTO N Waypoint Bearing = 780 COG =Bearing = 3500 XTE =650 COG = 1/3 mi.50 XTE = 1/2mi. Bearing = 400 COG = 1040 XTE = 1/4 mi. Course Over Ground (COG)Location Where GOTO Bearing =Was Executed Cross Track Error (XTE) = =
  21. 21. = WaypointsStart
  22. 22. APPLICATION OF NAVIGATION•Car Navigation•Dynamic Vehicle Routing•Tracking Rental Cars•Monitoring High Risk Auto Loans•Airline safety

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