Vehicle Navigation Correction for Accumulated Positioning Error

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Solution Overview

Problem

Current vehicle navigation positioning methods, particularly electronic signal positioning and inertial navigation, suffer from low precision and error accumulation, making them unsuitable for applications requiring accurate positioning.

Innovation Solution

A vehicle navigation positioning system that includes a navigation correcting base station and apparatus, which communicates with unmanned vehicles to correct positioning errors using high-precision optical ranging and environmental perception sensors, ensuring accurate coordinate acquisition through real-time error calculation and correction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If electronic signal positioning is used, then positioning coverage is improved, but positioning precision deteriorates

Engineering Contradiction:
Improvepositioning coverageVSAvoidpositioning precision
Core Design Contradiction:
Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent introduces a navigation correcting base station as an intermediary component between the satellite positioning system and the vehicle. This base station receives satellite positioning signals, processes them through high-precision clocks and antennas, and transmits correction data to vehicles. This intermediary structure enables vehicles to achieve millimeter-level positioning precision by correcting the inherent errors in electronic signal positioning, thus resolving the contradiction between maintaining wide coverage and improving precision.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If inertial navigation is used, then positioning independence is improved, but positioning precision deteriorates due to error accumulation

Engineering Contradiction:
Improvepositioning independenceVSAvoidpositioning precision
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The patent implements a feedback mechanism where the navigation correcting base station continuously monitors positioning errors through high-precision satellite signal reception and sends correction data back to vehicles. This feedback loop allows the inertial navigation system to correct its accumulated errors periodically, maintaining positioning independence while preventing precision deterioration. The base station acts as a reference point that provides periodic error correction without requiring continuous external signals.

Inventive Principle:
Principle #23Feedback

3Measurement precision

If high-precision optical ranging is used, then positioning precision is improved, but system complexity increases

Engineering Contradiction:
Improvepositioning precisionVSAvoidsystem complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The navigation correcting base station performs self-service by automatically receiving satellite signals, calculating positioning errors, generating correction data, and transmitting it to vehicles without requiring complex manual intervention. The system uses standard communication protocols and automated algorithms to maintain high precision while minimizing operational complexity. The base station independently manages its high-precision clock and antenna array, reducing the need for external calibration and maintenance.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS20230213946A1Vehicle Navigation Positioning Method and Apparatus, and Base Station, System and Readable Storage Medium
Publication Date: 2023.07.06 AUGUST ROBOTICS LTD
  • US20230213946A1 patent drawing
  • US20230213946A1 patent drawing
  • US20230213946A1 patent drawing

AI summary

Disclosed are a vehicle navigation positioning method, apparatus, base station and system and a readable storage medium. The vehicle navigation positioning method includes: receiving a navigation positioning service request and generating driving planned route information (S301); collecting navigation positioning parameters, and calculating according to the navigation positioning parameters to acquire a positioning error value accumulated during unmanned vehicle driving (S302); inquiring about a closest navigation correcting base station according to the driving planned route information when the positioning error value accumulated during unmanned vehicle driving reaches a positioning error threshold (S303); and establishing communication connection with the navigation correcting base station, acquiring navigation correcting parameters through the navigation correcting base station and modifying the navigation positioning parameters according to the navigation correcting parameters (S304). By calculating the accumulated error value in the navigation positioning process and modifying the navigation positioning parameters through the navigation correcting base station, an unmanned vehicle can constantly correct errors in the driving process, and when entering a working area, has a positioning precision level required by operation so as to be applicable to application scenarios with accurate positioning requirements.