AI RTK Correction for Autonomous Vehicle Location Accuracy
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Solution Overview
Problem
Current navigation systems for autonomous vehicles face inaccuracies in location determination due to multipath interference and other errors, necessitating the use of expensive sensors for centimeter-level accuracy, which increases costs and reduces reliability.
Innovation Solution
A navigation system employing an AI correction calculator that receives base station data and satellite reference locations to calculate real-time kinematics (RTK) corrections, transmitting these corrections over the air to correct satellite reference locations to real-world coordinates, thereby eliminating the need for expensive sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If expensive sensors are added to achieve centimeter-level location accuracy, then measurement precision improves, but device complexity and cost increase
Solution Approach 1:
A base station acts as an intermediary between satellites and the autonomous vehicle. The base station receives satellite signals, calculates correction values for multipath interference and other errors, then transmits these corrections to the vehicle's navigation system, enabling centimeter-level accuracy without complex sensors
Solution Approach 2:
The patent replaces physical sensor systems (cameras, LIDAR, radar) with a signal-processing-based correction system. Instead of using multiple expensive sensors to physically measure position, the system uses computational correction of satellite signals to achieve the same measurement precision
2Measurement precision
If expensive sensors are added to achieve centimeter-level location accuracy, then measurement precision improves, but cost increases
Solution Approach 1:
The patent employs a cost-effective base station system that provides correction data to multiple vehicles. Rather than equipping each vehicle with expensive sensor arrays, the system uses affordable satellite receivers combined with base station corrections to achieve centimeter-level accuracy at lower cost
3Measurement precision
If multiple sensors are added to correct GPS inaccuracies, then measurement precision improves, but reliability decreases
Solution Approach 1:
The patent extracts and corrects only the specific errors present in satellite signals (multipath interference, clock errors, orbital errors) through a base station reference system, rather than adding multiple sensor systems. This targeted correction approach maintains reliability by focusing on correcting signal errors rather than combining multiple independent sensor systems
Data Source
AI summary
A navigation system includes: a communication circuit configured to: receive a base station data including an actual location and a satellite provided reference location from a base station, and transfer the base station data to an artificial intelligence (AI) correction calculator, already trained to negate a multipath interference of a position satellite; a control circuit, coupled to the communication circuit, configured to: calculate a real-time kinematics (RTK) correction, by the AI correction calculator, based on the satellite provided reference location and the actual location; and enable the communication circuit to transmit the RTK correction by an over the air (OTA) communication to the base station including the base station transferring the RTK correction to a device for correcting the satellite provided reference location to a real-world location and displaying on the device.