Table Of Contents - u-blox LEA-4R System Integration Manual And Reference Design

Contents
1 Dead Reckoning Fundamentals ...................................................................................7
1.1 Dead Reckoning enabled GPS (DR)..............................................................................7
1.2 Dead Reckoning Principle............................................................................................7
1.3 Dead Reckoning Performance .....................................................................................8
2 Design-In.....................................................................................................................10
2.1 Schematic Design-In Checklist for LEA-4R/TIM-4R .....................................................10
2.2 TIM-4R/LEA-4R Design ..............................................................................................11
2.2.1 Forward / Backward Indication............................................................................11
2.2.2 Odometer / Speedpulses.....................................................................................11
2.2.3 Power Supply for Gyroscope, Temperature Sensor and A/D Converter.................11
2.2.4 SPI Interface for Gyroscope and Temperature Sensor ..........................................12
2.3 Pinout tables ............................................................................................................13
2.4 Layout Design-In Checklist for ANTARIS
2.5 Layout ......................................................................................................................14
3 Receiver Description...................................................................................................15
3.1 Dead Reckoning enabled GPS module (DR module)...................................................15
3.1.1 Architecture .......................................................................................................15
3.1.2 Input Signals/ Sensors.........................................................................................17
3.1.3 DR specific Parameters .......................................................................................20
3.1.4 DR Calibration....................................................................................................21
3.1.5 Storage of Parameters ........................................................................................23
3.1.6 Static Position.....................................................................................................24
3.2 Power Saving Modes ................................................................................................24
3.3 Antenna and Antenna Supervisor .............................................................................24
3.3.1 Open Circuit Detect............................................................................................24
4 Navigation ..................................................................................................................25
4.1.1 Overview............................................................................................................25
4.1.2 Navigation Update Rate......................................................................................25
4.1.3 Dynamic Platform Model ....................................................................................26
4.1.4 Static Hold Mode ...............................................................................................26
LEA-4R / TIM-4R - System Integration Manual / Reference Design
GPS.G4-MS4-05043
®
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Content
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