Chaminda Basnayake, Ph.D.

Positioning Technology for V2X

Agenda

What is V2X ?

What makes V2X possible ?

Communications

Positioning

Why GPS / GNSS ?

GNSS Measures Range/Distance

GPS Range & Position Estimation (Standalone Case)

GPS Errors: Atmospheric Delay

Satellite Visibility / Selection & Geometry

Sky Visibility in V2X

GPS Signal Reflections / Multipath

Typical Automotive Grade GPS Receiver Error Budget

CEP & Performance Implications

Example of Receiver Type & Sky View Variations

The V2X Positioning Problem

V2X Over-the-Air Messaging (OTA)

V2X Positioning Example (Share Position Only)

GPS Range & Position Estimation (Differential )

Proposed Use of SAE J2735 GNSS Data

V2X Relative Positioning

Alternative Paths to Higher Accuracy: GPS/GNSS Corrections

Alternative Paths to Higher Accuracy: Multiple Frequency GPS/GNSS

GNSS Threats: Jamming

GNSS Threats: Spoofing

Summary & Conclusions

Renesas V2X Solution & Partners

Renesas V2X Solution

REFERENCES

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