Vehicle Positioning via V2X-Triggered Satellite Processing
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Solution Overview
Problem
Current methods for determining a vehicle's geographical position using satellite signals are inefficient, requiring multiple satellite signals and complex calculations, which can lead to outdated position data and increased computing power consumption.
Innovation Solution
A device comprising a satellite navigation receiver, a sensor to record movement parameters, and a processor that generates a V2X communication message, synchronizing the determination of the geographical position with the message generation, using higher frequency satellite signal processing to reduce computational load and ensure accurate, timely position data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If satellite navigation receiver determines geographical position continuously using multiple satellite signals, then position accuracy is improved, but computing power consumption increases and position data becomes outdated
Solution Approach 1:
The system performs satellite signal processing and geographical position determination periodically based on V2X message generation triggers rather than continuously. The processor determines position only when needed for message transmission, reducing computational load while maintaining accuracy for communication purposes
Solution Approach 2:
The system pre-processes satellite signals at a higher frequency than the V2X message transmission rate, preparing position data in advance. This allows the processor to have position information ready when message generation is initiated, reducing latency without requiring continuous high-power processing
2Speed
If satellite navigation receiver processes satellite signals at high frequency, then position data timeliness is improved, but computational load increases
Solution Approach 1:
The satellite navigation receiver pre-processes signals at high frequency (e.g., 100 Hz or 1 kHz) to prepare position data in advance, but the processor only performs the computationally intensive SPP calculation when a V2X message needs to be generated. This separates signal acquisition from position calculation, improving timeliness without permanently increasing computational load
Solution Approach 2:
The system dynamically adjusts the processing frequency of satellite signals based on the V2X message generation requirements. The satellite navigation receiver operates continuously at high frequency to maintain signal readiness, but the processor activates position determination only when triggered by message generation needs
Data Source
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AI summary
The present invention relates to an apparatus (100) and a method (300) for determining a geographical position of a vehicle (208). The apparatus (100) comprises a satellite navigation receiver (102) which is designed to receive satellite signals, a sensor (104) which is designed to capture a movement parameter of the vehicle (208), and a processor (106) which is designed to generate a V2X communication message, wherein the V2X communication message indicates the movement parameter of the vehicle (208), and to determine the geographical position of the vehicle (208) by means of the satellite signals in response to the generation of the V2X communication message being initiated.